Can't log into iTunes. Resolving the error “Connection to the App Store failed

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Problems with the app store are, of course, always untimely. Why does the connection fail? App Store? So what should I do? Let's consider ways self-elimination problems using the example of two versions of the Apple operating system.

Connection failure on iOS 7

A very common situation is when store applications crash when launching. For example, the user is the owner of a smartphone or tablet based on version 7 of iOS.

He did not jailbreak or similar manipulations, but the problem nevertheless arose. What to do in this situation?

The first thing that is recommended to do is reboot the device itself.
You should also log out of your account and log in again using your username and password.
If this doesn't help, you should try resetting your network settings.
A more radical method is to completely reset the device settings. In this case, you must first take care of backup all important data.

If the failure is not resolved even after this, you need to contact a specialist.

How to fix the error on iOS 8

It's no secret that with each new update, Apple specialists strive to fix as much as possible more errors and prevent problems from arising in the future.

However, iOS 8, unfortunately, could not avoid this. Of course, many errors were fixed (for example, ringtones purchased from the iTunes store disappeared), but the connection to the App Store still fails.

If there is similar situation, you need to proceed as follows.

First, it's worth trying to sign out of your Apple ID (via App settings Store) and log in again account using your username and password.
Secondly, you should check your router signal as there may be a problem with your internet connection. Sometimes rebooting the router helps, as well as rebooting the iOS smartphone or tablet itself.
If the problem has not been resolved, you should resort to familiar reset methods network settings, in extreme cases - to a complete reset of all device settings.
Let us remind you: if you do not take care of a preliminary backup, you can lose all your important data. You can create a backup in iCloud.
Go to iCloud settings and select the creation menu backup copy. The time it takes to copy depends on the speed of the online connection, as well as the amount of information being stored.
If none of the above helps, contact technical support.

Any owner of an iPhone or other Apple mobile device may encounter this problem. Here, as in the joke about aliens, the chance is 50 to 50. It can occur in any user at any time, regardless of generation or type of device. It can occur on any Macintosh product. If an error is issued on mobile device, no need to worry, much less do it full reset. Even if you first save important data, after this operation you will have to reinstall everything again third party applications, but this will not solve the problem. So, let's start breathing more evenly and read on? The error may look like the message “Connection to the App Store failed,” or the “Unable to connect to the App Store” window. Some Icloud suffer from the same disease. iTunes and Image.

Why does the connection to the App Store fail?

Usually the problem occurs when you try to download a new application or update an already installed one. There are several possibilities for its occurrence, and in most cases the reason lies in a failure on the device itself.

For example:

The date and time are incorrectly configured. It is important that the correct time zone is specified.
Hidden serial number devices. The “About Device” data must contain a serial number. At hidden number serial device, or displaying the OS X version or build number instead, the server will simply refuse authentication to the device. After updating the operating system, just such a replacement of numbers may occur.
Incorrect settings networks. When connecting via Wi-Fi access some or even all resources may be limited. The network administrator may have changed the settings, or Wi-Fi access is limited to only a few allowed servers or domains. In general, there must be Internet!
Invalid or expired certificates for the device. With an expired security certificate, the server will refuse to allow the device through. This point concerns, first of all, desktop computers. It can be treated by deleting crlcache.db and ocspcache.db from the folder with certificates /var/db/crls/ and then rebooting the system. There are options for setting up certificates and modifying the Keychain containing passwords and certificates manually, but, firstly, the user may not have enough privileges to modify the certificates, and then you will have to reinstall OS X, and secondly, there are more simple ways solutions. For example, calling Apple support.

What to do if the connection to the App Store fails on your mobile device

The first step is to check if the Internet is available. Perhaps the router needs to be restarted, or maybe mobile traffic ended. If there is internet, then something is wrong with the settings in the device.

There is a fairly simple method available to any iPhone or iPad user. It allows you not to spend a long time delving into the settings and solves the problem in most cases. This method consists of two stages:

Log out of your Apple ID in the device settings.
We go back to our Apple ID.

To be sure, you can reboot the device between these two stages. Everything is ready! No reinstallations, no settings, you can go to the App Store.

Can't connect to iTunes store

The error message may look very different, but ultimately the situation is the same. For mobile device users, the solution is the same - check if the Internet is available, re-login to your ID.

I can't connect to iTunes via Apple TV. Here everything is somewhat more complicated. We check the availability of the Internet, updates for TV and date settings. We correct errors manually and get access to iTunes. If you can’t log in through a Macbook or desktop Mac, you should pay attention to several points in addition to those listed above:

Make sure you have the latest versions of Safari and iTunes on your computer.
If a firewall is activated on the system, make sure that it allows connecting to iTunes. This, of course, applies when logging into this system for the first time, or if the firewall has recently been installed (activated).

If the problem occurs when you try to access iTunes via a PC, then check again whether it responds to technical support. iTunes requirements, update your OS to latest version, do not use the proxies built into the system to connect to iTunes.

In addition to this, other problems may arise. The most common is conflict between iTunes and software that monitors traffic on a computer. It may look like “Blank” iTunes or be accompanied by a message with the number 0x80090318. This means that some software components your PC uses LSP technology. In some ways, this message may even be a good sign. Perhaps the firewall is again to blame, or perhaps Apple has just discovered a Trojan on your system. In the first case, we resolve the issue with firewall permissions, and in the second, we urgently need to clean the system.

Perhaps these are all cases when there may be a problem connecting to the App Store. In most of them, the refusal is accompanied by a more or less informative message, and in the vast majority, regardless of the content of this message, re-logging into the Apple ID will solve the problem. The main thing is not to fuss, but to check everything in order if a problem arises. Otherwise, rash actions can lead to much worse results. The likelihood of this and other problems occurring is reduced by preventive measures. Keep the software on your devices updated to the latest versions whenever possible, and use a reliable antivirus.

Any citizen who owns an expensive flagship from Apple, let it be an iPhone or any gadget, may encounter the following problem - “It will be impossible to enter the official application store (App Store). As they say as a joke: everyone has a 50 to 50 percent chance of stumbling upon such a disaster. This means that the problem can happen to any user, regardless of the device used, and regardless of any social or other characteristics.

If such an error occurs on an Apple mobile device, there is no need to panic, much less do a hard reset (deleting all settings and personal data on the mobile phone), because it is enough to solve this problem differently. The error may appear differently on each Apple device. However, in ninety percent of cases, users report messages related to this problem such as “App Store connection failed,” “unable to connect to app store,” and so on.

Why can't I connect to the iTunes store?

Usually this problem appears after a person wants to install some kind of program update on his smartphone or, in general, download a completely different application (game), and he gets a kind of error due to problems that could have been noticed many times before by himself users.

Here is a list of sample problems that may prevent you from connecting to the iTunes store:

The date and time were set incorrectly on the smartphone. It may be that the connection to the correct time zone is missing.
The serial number of the Apple device could be hidden, and because of this, the error actually pops up - “cannot connect to the iTunes store.” However, dealing with this problem is quite simple: first go to the “Settings” section, select “About device” and make sure that the values we need are there.
The third problem, due to which it may pop up information error commonly called “Lack of normal Internet connection.” Apple developers have repeatedly repeated: “For the normal functioning of the App Store, high-quality Internet is necessary.” Therefore, if there are problems with the Wi-Fi network at home, there is a chance that this error will pop up repeatedly.
Expired (invalid) root certificates stored on the device can also become a problem, due to which an informative message will appear - iTunes was unable to connect to the iTunes store. This case can be treated simply. It is necessary to delete two files from the certificates folder, namely “ocspcache.db”, “crlcache.db”. Next, you need to reboot your device and try logging into the App Store again.

Initial steps to take when the “App Store connection failed” error occurs.

Before following the suggested recommendations or seeking help from specialists, you must carefully examine the router (modem) you have at home. If your Internet connection is working properly, you can try logging into your Apple ID in a new way on your mobile device, then restart your phone later and check the functionality of the App Store servers. There are times when the simple procedure of “Log out of your account” and re-enter the necessary data helped solve this problem and you didn’t have to spend a lot of time fixing the existing problem.

Conclusion

Perhaps, this has covered all the ways to solve the problem of connection failure to the App Store. If a message appears, then you shouldn’t start worrying, just pull yourself together and try to log in Apple account ID in a new way, reboot mobile phone, try updating the software (version of the iOS operating system) and see if the existing problem is solved. At times, excessive actions taken by a person can cause more harm than good. No need to do it right away Hard Reset(factory reset), even if there is a saved copy of personal data and applications, because some problems may also arise with restoring this copy. It's better to start small and watch the results.

Check your settings and network connections to try to fix the problem on iPhone device, iPad, iPod touch, Apple TV or Mac or PC.

If iTunes Store, App Store or iBooks Store loads as expected, but can't sign in, you can.

Availability and store features may vary by country or region.

Checking the connection

Make sure your device is connected to the Internet. Try opening a website in your browser. If the site does not open, try the same on another device connected to the same network. If other devices can't access the Internet, turn your Wi-Fi router off and on again to reset it. If you still can't connect to your Wi-Fi network, contact your Internet service provider for further assistance.

Checking the System Status

On a Mac or PC

Follow the instructions for your computer.

On a Mac

By default, the built-in software firewall in macOS automatically allows Apple-signed programs to accept incoming connections. If the firewall settings for programs have been changed, this may be required. If the problem persists, reset the accepted certificate cache:

Other messages when connecting

The steps in this article may also help you troubleshoot the following error messages.

Why can't I connect to the iTunes store?

Here is a list of sample problems that may prevent you from connecting to the iTunes store:

The date and time were set incorrectly on the smartphone. It may be that the connection to the correct time zone is missing.
The serial number of the Apple device could be hidden, and because of this, the error actually pops up - “cannot connect to the iTunes store.” However, dealing with this problem is quite simple: first go to the “Settings” section, select “About device” and make sure that the values we need are there.
The third problem, due to which an information error can pop up, is usually called “Lack of a normal Internet connection.” Apple developers have repeatedly repeated: “For the normal functioning of the App Store, high-quality Internet is necessary.” Therefore, if there are problems with the Wi-Fi network at home, there is a chance that this error will pop up repeatedly.
Expired (invalid) root certificates stored on the device can also become a problem, due to which an informative message will appear - iTunes was unable to connect to the iTunes store. This case can be treated simply. It is necessary to delete two files from the certificates folder, namely “ocspcache.db”, “crlcache.db”. Next, you need to reboot your device and try logging into the App Store again.

Initial steps to take when the “App Store connection failed” error occurs.

Conclusion

Perhaps, this has covered all the ways to solve the problem of connection failure to the App Store. If a message appears, then don’t start worrying, just pull yourself together, try logging into your Apple ID account in a new way, reboot your mobile phone, try updating the software (version of the iOS operating system) and see if the existing problem is solved. At times, excessive actions taken by a person can cause more harm than good. There is no need to immediately do a Hard Reset, even if you have a saved copy of your personal data and applications, because restoring this copy may also cause some problems. It's better to start small and watch the results.

Wi-Fi connections never cease to surprise us with new types of malfunctions. In today's a short excursion Let's look at the problem "". Most likely, you encountered it when you tried to connect a friend’s laptop to the network or after the connection to the device was interrupted. There is nothing wrong with this, you just need to adjust the network parameters and it will start.

Why can't I connect to a Wi-Fi network?

Windows was unable to connect to the network for various reasons, usually the problem is a failure of the Wi-Fi router itself, probably the automatic settings have gone wrong, or there is a problem in Windows. Most often, the point is to change the network password or change the encryption type, perhaps even without your participation. In any case, there is a fairly effective remedy for this problem; you just need to reconnect to the network, like a new device.

Before you go through the system, you need to try restarting the device, which helps in most cases. Sometimes you have to repeat the procedure two or three times. Then run:

Click on the icon in the Wi-Fi connection tray (inactive, of course);
Expand the full list of settings by clicking on “Network settings”;

Click the “Manage Settings” link again Wi-Fi networks»;

Select the network with the problematic connection and click on “Forget”;

Reconnect to the network.

Most often, the problem goes away at this stage, but only if the cause is superficial and is not related to a failure in the router parameters, otherwise diagnostics should be continued.

In some cases, a scan is launched that identifies network requirements, the password window does not even appear, and the scan takes forever. You will have to perform a full reboot of the device.

If it still says “Could not connect to the network,” we continue to eliminate the parameters that were changed and block the connection using drivers. This is what follows:

Click on Start and right-click on “Computer”, then “Properties”;
Select “Device Manager”;
Expand the “Network adapters” list;
RMB on the required item and “Delete”;

This is how it would seem that a laptop (netbook, etc.) works with a Wi-Fi network and no questions asked. And one day you turn it on and an error appears: “Windows was unable to connect to Wi-Fi...”. What to do?

This is exactly what happened with my home laptop. In this article I want to tell you how you can eliminate this error (besides, as practice shows, this error is quite common).

The most common reasons:

1. Lack of drivers.

2. The router settings are lost (or changed).

3. Antivirus programs and firewalls.

4. Conflict between programs and drivers.

And now about how to eliminate them.

Resolving the error "Windows could not connect to the Wi-Fi network"

1) Setting up Windows OS (using Windows 7 as an example, similar in Windows 8).

If you still receive an error stating that it is not possible to connect to the network (as in the picture below), click on the " troubleshooting"(I know that many are very skeptical about her (I was the same way until she helped restore the network a couple of times)).

If the diagnostics did not help, go to " Network and Sharing Center" (to enter this section, just right-click on the network icon next to the clock).

Now we simply delete our wireless network, which Windows cannot connect to (by the way, you will have your own network name, in my case it is “Autoto”).

We try again to connect to the Wi-Fi network that we deleted in the previous step.

In my case, Windows was able to connect to the network, and without any questions. The reason turned out to be trivial: one “comrade” changed the password in the router settings, and in Windows, in the network connection settings, the old password was saved...

2) Setting up a Wi-Fi network in the router

After checking your wireless connection settings in Windows, the second thing you need to do is check your router settings. In 50% of cases, they are to blame: either they went wrong (which could happen, for example, during a power outage), or someone changed them...

Because If you were unable to connect to the Wi-Fi network from your laptop, then you need to set up the Wi-Fi connection from a computer that is connected to the router using a cable (twisted pair).

In order not to repeat myself, here is a good article about. If you can’t log in, I recommend checking out this:

In the router settings We are interested in the “Wireless” section (if in Russian, then setting up Wi-Fi parameters).

For example, in TP-link routers this section looks something like this:

Setting up a TP-link router.

By the way, in some cases you may need to reset your router(s). On its body there is special button for this. Press it and hold it for 10-15 seconds.

Task: change the password and try to set up a wireless connection in Windows (see point 1 of this article).

3) Update drivers

The lack of drivers (as well as the installation of drivers that are not suitable for the equipment) can cause much more serious errors and failures. Therefore, after checking the router settings and network connection in Windows, you need to check the drivers for the network adapter.

How to do this?

4) Setting up startup and disabling antiviruses

Antiviruses and firewalls (with certain settings) can block all network connections, supposedly protecting you from dangerous threats. Therefore, the easiest option is to simply disable them or delete them during setup.

Regarding startup: during setup, it is also advisable to remove all programs that automatically load with Windows. To do this, press the key combination "Win + R" (valid in Windows 7/8).

Very often, when connecting to a wireless network, users encounter various errors. Probably the most common is that Windows was unable to connect to the WiFi network. What is this error and how can I fix it? This is what we will talk about.

But before moving on to connection problems and their solutions, first a few words about how a wireless network works. The fact is that WiFi routers are usually used to create private groups. It is to them that the computer is subsequently connected. This means that first of all, if you encounter any connection problems, you need to check your access point (router).

There are more than enough reasons for such an error to appear. It is simply impossible to consider each of them. Therefore, let's look at the most common problems with connecting to a WiFi network and their solutions. So, if the computer sees the network, but cannot connect to it, then you should check the following parameters:

Checking for correct insertion.
Router settings.
Checking drivers.
Settings wireless connection on Windows.
Firewall and antivirus program settings.

There may also be conflicts between programs and drivers, and even malfunctions of the wireless adapter. Let's go in order.

Checking the network key

Very often the reason for a connection error is a password mismatch. This means that you simply made a mistake when entering the key. Therefore, first of all, you should check that the code is written correctly. Try connecting to the network again, but carefully check your keyboard layout and whether Capslock is enabled.

How to find out the password for your WiFi in the router settings: Video

Setting up the router

If you are still sure that the entered key is correct, then you should check the router settings. To do this, connect to it using a cable. Next, open your favorite browser and enter the router’s IP in the address bar. It is indicated on the bottom panel of the device, as well as in the instructions (if available).

How to easily find out the IP address of a WiFi router: Video

Now we will need to enter a password and login. Initially, this is admin, admin, respectively. If you have already changed this data, then enter your values. After that, go to the settings menu. Everything is simple here. We are interested in setting up a wireless network (Wi-Fi). Find the Security Settings. You need to find the network key in the security settings. If necessary, you can change it.

Next, you should check the MAC address filter. It is quite possible that you, or someone else who has access to the router (it is possible), has included your computer in the filter by MAC address. Because of this, even with correct password you will not be able to connect to WiFi networks.

To check this, you need to go to the “MAC-Filtering” item in the wireless network settings and check if there are any devices there. You don't need to find out the MAC address of your computer; you just need to remove all devices on it from the list.

How to set up a MAC filter in a router: Video

It is also recommended to reboot the router, as they may malfunction. This applies to absolutely all models, from budget to the most expensive. If you have done all the above steps, and Windows still cannot connect to the WiFi network, then go to the operating system settings.

Checking drivers

Articles on the topic
First of all, it is necessary. The fact is that any version of Windows needs hardware software, since a special program is needed for the operation of a particular module. The operation of the equipment (in our case, the wireless module) also depends on its correct operation.

So, you can check this in the task manager. You can open this service in any version of Windows through the properties of my computer. Find “My Computer” on the desktop or in the start menu, click on it right click mouse and select “Properties”. In the window that appears, in the left menu we find “Device Manager”. Now we need to find the branch called “Network Adapters” and open it.

If there is no such branch, then this indicates that there are no drivers for network cards. In this case, they need to be installed. But if you can turn on the WiFi module, and the computer sees available networks, but cannot connect to them, then the drivers must be installed. The only question is whether they work correctly. So, open the network adapters branch. It must contain at least two devices:

Network adapter.
Wireless Network Adapter.

In addition, there may be Bluetooth devices and other network modules. If the adapter wireless communication is highlighted with an exclamation mark, this means that the drivers are not working correctly. There may also be other problems. You can find out the error by right-clicking on the module and selecting “Properties”.

In the window that appears, in the “General” tab (usually the first one that opens), you will find the “Device Status” item. The error and its number will be indicated here (if the device is not working correctly). Knowing the error, you can find a way to fix it. As a rule, reinstalling the driver solves all problems.

Reinstalling the driver is extremely simple. It is available on the disk that came with the laptop. But even if there is no such disk, you can download them from the official website of the laptop manufacturer. After downloading and installing, check their software as above and try to connect to your network.

How to reinstall the WiFi driver: Video

Setting up a wireless connection in the Windows Management Console

First of all, we need to open the network control center and shared access. It is this tool that allows you to manage all network connections, including wireless ones. There are several ways to do this, but we will look at the simplest one.

Find the network icon in the tray (lower right corner), right-click on it and select “Network and Sharing Center”. In the window that appears, we are primarily interested in the “Change adapter settings” item. Now we are in a service that allows you to manage connections. Find the “Wireless Network” shortcut. Right-click on it and select “Properties”.

In the window that appears, in the “Network” tab, you need to find Internet Protocol version 4 TCPIPv4. Select it and click “Properties”. In the menu that appears, you need to check the “Obtain an IP address automatically” checkbox. A little lower, it is also worth setting a marker on automatic data acquisition. Click “Ok”, close the window and try to connect to the network.

If Windows still cannot connect to the network, then return to the control center and select “Manage wireless networks”. Find the desired network in the list and click “Adapter Properties”. Next, we check the TCPIPv4 protocol, as described above. We try to connect again.

If the problem is not solved, go to the “Wireless Network Management” menu, find and delete the desired network. Don't worry, Windows will still find it. This is necessary to reset all connection parameters.

System diagnostics

If you have completed all of the above steps, and the system still gives an error and Windows is unable to connect to the WiFi network, then you need to run diagnostics. There are several ways to enable it. It is worth noting that if any errors occur, as a rule, the system itself offers diagnostics. But if this still does not happen, then the fastest way to launch it is to right-click on the network icon in the tray and select “Diagnostics problems”.

After this, the system will automatically begin searching for and eliminating errors. All you have to do is follow the prompts on the screen. It should be noted that such diagnostics can be performed several times in a row, since Windows does not always find and fix the error the first time.

We looked at the most common errors that you can fix yourself. However, more serious mistakes also occur that require an individual approach. All records of problems and failures are contained in the Windows log. If necessary, you can look at it and find out the error code associated with the wireless connection. This will help you find a solution faster.

How to view the Windows event log

On all operating systems, this log is located in one place. In order to open it, you need to find the “My Computer” shortcut. It can be on the desktop, in the start menu, or in the file manager. Right-click on it and select “Manage”.

In the window that appears, in the left menu we find “Event Viewer”. Open it and find the “Windows Logs” folder. Let's open it. Now we find the “System” item. This is the required journal. Let's open it. When opening, you will need to wait a little, since the system has huge amount records that take some time to scan.

In this log, warnings are marked with yellow triangles with exclamation marks inside, and errors - in red circles. Now all you have to do is find the error related to Internet connection or local networks in the list and open it

The iTunes Store is an online shopping center Apple. In this virtual object there are different folders: music, movies, gaming applications, books and much more. This “cloud” helps to establish more convenient access to the files you need. This storage makes it easier to find and download any content. But sometimes the phone says “Cannot connect to the iTunes Store.” Is there any way to fix this?

Why is this happening?

The reason for this problem may be the following:

the date and time are incorrectly determined, there is no reference to the correct time zone;
the error may occur on the smartphone if its serial code is hidden;
Sometimes you can’t connect to the iTunes Store due to a poor Internet connection; it’s best to use Wi-Fi, because mobile traffic may not load “heavy” programs (games, for example).

Expired certificates stored on a smartphone can also become a problem.

What should I do?

What can you do if you are unable to connect to the iTunes Store iPhone? First of all, you need to reset all phone options. To do this, follow the steps below.

Once you complete the previous step, change the date and time zone. To do this, you should also go to “Settings”, then select “General”, then go to the “Date and Time” sub-item. Uncheck “Automatic”, then put, for example, 2038, put a city of your choice.

Then log into the AppStore and open the Updates section. You should see a message saying that your device can't connect to the iTunes Store. This is to be expected. At this point, look again at the date and time options, set the original current date.

The problem may not go away immediately after the actions taken. For the new configurations to take effect, restart your smartphone. After this, the iTunes Store should work smoothly on any phone.

Why can't I connect to the iTunes Store on my personal computer?

What to do if the iTunes Store doesn't work when you try to download from personal computer? First of all, see if you have an Internet connection. If everything works, then try repeating the requests in iTunes several times in a row. Wait some time. The error may be a malfunction in the functioning of the online store itself. Just wait until the server fixes the problem. If you still can't connect to the iTunes Store after some time, you should look for other reasons for the error.

What else could cause this problem?

To decide this problem, try a few more simple actions. Update iTunes to the latest version. Do this through the official website or through the program itself. Do not use third party resources. Disable your firewall. It may cause operational problems. If you cannot or do not want to disconnect, please add this store to your exclusion list. Try going to Internet Options. If you have proxy servers in your settings, remove them, and then try logging into the iTunes Store through a direct connection.

The last thing you should check is the hosts file. It is saved in a folder located at C:\WINDOWS\SYSTEM32\DRIVERS\ETC. Once you run it, you will see the IP addresses. Find the line 127.0.0.1 localhost, and then delete all addresses below it. Next, close and save the data to a file.

Finally, scan your PC with an antivirus. It is worth noting that all the above actions will not affect the data on your phone in any way. All files, without exception, will be saved on your iPhone safe and sound.

What to do on a Mac computer?

The firewall on Mac OS is configured to automatically accept incoming connections from Apple programs. If you have changed factory configurations, you will need permission to external connections. If you still can't connect to the iTunes Store even if you have it, clear the cache of accepted certificates.

To do this, open Finder. From the menu at the top of the screen, click Go, then Go to Folder. In the search, type /var/db/crls/. Click on the “Go” button. Delete the crlcarche.db and ocspcache.db files. If necessary, write the administrator password. Restart your computer, then try connecting to the iTunes Store.

Before doing the above steps or going to a technician for help, carefully examine your modem. If the Internet is functioning correctly, then try logging into your Apple ID, then restarting your computer and checking the AppStore servers. Sometimes it is enough to log out of your account and enter all your login information again. As a rule, this helps to improve the operation of the store and fix the problem, as well as save time.

The above tips will also help in dealing with other similar problems:

iTunes Store does not connect and displays an unknown reason;
you sent a request, and the system asks you to repeat it after some time;
you receive a notification that something is wrong with your Internet connection;
I couldn't log in because network connection not installed.

Try to figure out the problem yourself, and only then take your smartphone to a service center.