Apple iphone 6s no signal why? No signal analysis for mobile phone

What about the iphone Apple phone without a signal?

If you have not recently upgraded the iOS version, but suddenly encountered a mobile phone is not a signal, then it may be the problem of their own mobile phone, when encountered the Apple iphone show has been searching for the signal, the phone card may be loose, bad contact. We can then try to remove the calling card and put it back in.

If you plug in the phone card, still can't solve the problem, you can try to find a friend's phone card to see if it is the card. If you are changing someone else's phone card, you can search the normal mobile signal, please continue to see the following method.

Iphone6s signal is not good to solve

1. Switch flight mode

Sometimes we are at a cross base station where the signal diving instability occurs. You can try switching flight mode, first open the flight mode for 5 seconds and then close, and see if your signal is full of blood and resurrection.

2. Manually select operator

The iphone will automatically access the appropriate network based on your card. But sometimes the iphone will also be the case of ventilation, if you are poor signal can manually select the network to try Oh. Go to "Setup"-"operator"-"Turn off automatic" and so on to search out the network and select the corresponding operator according to your card. For example, I am Mobile card Select China Mobile.

3, reset the network

If you try the above two methods the signal is still very bad may be your network setup problem, you can try to reset the network to try to see if the signal has improved! Method: Go to Settings-general--Restore--Restore network settings. Reminder: Restoring the network does not remove any data from the phone but the WiFi-dense "* * *" of mobile records is cleared.

4, Brush machine recovery System

If the above method does not solve the signal problem, it may be a system or a hardware problem. Try a full backup of your phone with itunes first, and then try again. If still not, only after the sale of the test to change the machine.

Apple mobile phone set to restore the tutorial

This method is for a machine that has no jailbreak, and if your machine has escaped, please do not operate. This method needs to restore all of the iphone settings and erase the data, so before you do this, back up the data on our phones, such as contacts, photos, applications, and so on. Connect the iphone to the computer, open the itunes software, and click on the iphone icon in the window.

Then, in the summary interface, click the "Back Up Now" button and then follow the prompts to back up the data on the current phone. After we have backed up the data on our phone, please open the "Settings" app on the iphone's main screen. In the list of settings, find the "Universal" column and click Open.

At the bottom of the generic list, find the "Restore" column, click Enter, click the "Erase All content and settings" option in the Restore list, and if the phone has a password, please enter the password to continue.

Finally, click on the "Erase iphone" option that pops up at the bottom and wait for the system to perform a restore operation, and if the iphone can search for the phone signal after the restore, then use the backup we made before the computer to recover. If all of these operations have been tried, the iphone has always been in search status, it is recommended to repair the local Apple after the hardware test.

It is possible that the iphone6s is a systemic problem when the iphone6s signal problem is not solved by the aforementioned method. At this point, you can try the brush machine to restore the system method. The specific actions are as follows:

The first step is to connect the iphone6s to the computer and run the itunes software. On the itunes page, click on "Back up now" to make a full backup of iphone6s.

The second step, then press SHIFT and click "Restore IPHON0E", select the appropriate firmware, restore the iphone system