A, restore network settings
Sometimes because of network setup problems that lead to the inability to connect, you can try to restore the network settings, in the iPhone open Settings ?ú General ?ú Restore
Entering the iPhone Restore Settings page, we can see the page of "Restore Network Settings", select and restore network settings. "Select and restore network settings, then restart the phone, reconnect to WiFi, and try to open the App Store again to see if the problem is solved.
Second, reset WiFi
If you think it's too much trouble to restore network settings above, you can try WiFi reset, open the settings page of your iPhone, find "Wireless LAN", click to open
On the right side of the WiFi account you are currently connected to, click "i" Settings.
On the right side of the WiFi account you are currently connected to, click on the "i" icon button
Then, in the page that opens, select "Ignore this network", then restart your phone and reconnect to WiFi again to see if the problem is solved.
Three, replace Apple ID
Sometimes the Apple ID problem will lead to iTunes Store can not be connected to the phenomenon, the quickest way is to borrow someone else's Apple ID to sign in, if someone else's can be connected, then it may be the time to register their own Apple ID, there are some information is not filled out! complete, directly to the official address to improve can:
Four, reset the date
The same method, in order to open the iPhone phone Settings ?ú General ?ú Date and Time, the "Automatic Settings" on the right side of the open button to close
Then, the current time adjusted to the last year, that is, the time of day, the time of day. Then, adjust the current time to the same time last year, that is, 2014, and then try the iTunes Store again, whether the problem still occurs? If it still doesn't connect, then turn on the "Automatic Settings" button again and try again to see if the problem is solved. If not, repeat the process a few more times.
Reset Access Restrictions
Open Settings→General→Access Restrictions on your iPhone and click Open
If Access Restrictions is currently on, see if the iTunes Store is also on. If so, turn it off
If access restrictions are currently off, tap "Enable Access Restrictions"
Set a 4-digit passcode for access restrictions and turn on the iTunes Store at the bottom of the list, and leave it on for 5 or 6 seconds
Set a 4-digit passcode for access restrictions and turn on the iTunes Store at the bottom of the list, and leave it on again.
Turn off access restrictions again, click "Disable Access Restrictions", and try again to see if the problem is solved.
Sixth, change the network
If the current use of WiFi network connection problems, you can change the network to cellular data, and then try to connect again; the same reason, if the use of cellular data network connection problems, then change to wireless LAN try.
If none of the above works, then it may be a problem with the carrier's network or Apple's servers, so try again some time later; or look around at your friends with iPhones and try connecting with the same carrier's network or wireless network to troubleshoot network problems or your own phone problems.