Iphone4s upgrade to the ios7.1.2 after the internet can not do?

No Internet we can restore the network, the specific steps are as follows

In the Apple phone we click on "Set-general-Restore-Restore network settings, and then restart the machine" try to solve it.

If restoring the network is still not resolved we can upgrade iOS7.1.2 via itunes again.

1, we can download the iOS7.1.2 system installation files to the computer, you can also use itunes directly upgraded, but the itunes direct upgrade will be slower, because it has a bit to download system files Oh.

2, then we put our own Apple set Iphone/ipad/itouch connected to the computer to open itunes.

3, hold down the keyboard shift (up button) + left mouse button click on itunes Update/restore function.

4. itunes will pop up the dialog window--Please select iOS7.1.2 firmware--Click Update--wait for itunes to run.

5, successful upgrade/recovery iOS7.1.2 need to activate the device, please follow the system prompts steps to complete.

Friendly tips, the recovery system will cause you all the data lost in the Apple device, so we need to do some backup data to avoid future data can not find back: Recommended reading: The iphone backup data method