After updating the ios8 system in 5s, the phone has been in a no service state

Restart to try if it doesn't work, then the phone doesn't support it.

I'll help you do it, if you can do it, I'll help you see if it can work

Mobile phone communication is to send and receive signals through the network base station, and then communicate with the called party, such as the mobile phone shows no service may be related to the following conditions:

1. The SIM card of the mobile phone is in poor contact with the shneme of the mobile phone card slot, resulting in the failure of the SIM card circuit and the inability of the mobile phone to communicate with the network base station.

2. The mobile phone is incompatible with the system due to the application software for installation, resulting in the system software closing the modem in the mobile phone signal processing circuit, at this time you can turn off the mobile phone and then restart, the modem in the mobile phone signal circuit will be restarted, and after the signal is normal, delete the suspicious mobile phone application software installed before the problem.

3. The SIM card of the mobile phone is not registered in the network, at this time, you can insert this SIM card into another mobile phone, if it also shows no service as the reason for the SIM card.

4. If the SIM card of the mobile phone is accidental, and there is no signal in the network signal coverage area, it fails to reconnect to search the network and merge the book, at this time, you can manually search for network registration under the menu of Settings - General - Network - Network Operator.

5. If the signal coverage of the mobile phone SIM card network operator is not available, you can change the location to an open area, and then check the mobile phone signal grid display, if the display is normal after changing the location, you can call the network operator service ** for feedback and complaints.

6. **The card has been used for too long, and with a valid certificate, you can go to the local business hall to reapply for a card.

1. Turn off the phone, take out the SIM card and try again.

2. Check whether the network of the same operator of the surrounding mobile phones is normal, and judge that it is a network fault.

3. Restart the phone to try, if it doesn't work, reset the network settings to see if there is a system problem.

4. Change the SIM card to see if there is a card problem. If you have a problem with the card, it is recommended to go to the mobile service center to replace the SIM card.

5. Enter the hardware test, click "SIM card test" on the hardware test interface, and see if the SIM card status is normal;

6. It is recommended to go to the after-sales outlets for detection of mobile phone problems.

1. First of all, make sure that you are staying in an area with no signal.

2. The mobile phone is locked, that is, the so-called American version, Japanese version, Korean version and the like have a locked phone, and there is a built-in card in the mobile phone, and the device or system cannot be updated.

3. If there is a system problem with the phone, you can try to restart it and reconnect to the Internet.

4. Check to see if you have turned on the airplane mode unconsciously.

You can re-modify it by clicking "Carrier" on the "Settings" interface in your phone and changing it to "Automatic".

2.Turn airplane mode on and off. In iPhone6s, swipe up at the bottom of the screen to open the shortcut panel, and then turn on airplane mode, of course, you can also turn on airplane mode in Settings, after turning it on, wait for 5 seconds and then turn off airplane mode to see if it solves the problem.

3.Restart your iPhone6s, press the power off button in your phone, then turn off your iPhone6s by swiping the screen, then restart your phone and see if you fix "No Service"!

4.Of course, removing the SIM card and verifying if it is a valid SIM card manufactured by the carrier can also solve this problem. See if the removed SIM card has been damaged, worn, or modified, and then reinsert it.

5.Update your iPhone6s, connect your iPhone6s to iTunes, and then upgrade your device system to the latest iOS system through iTunes. Of course, you can also go to "Settings" - "General" - "Software Update" to update and upgrade your iPhone6S.

After the above operations, it is still often displayed that there is no service, and it is recommended to go to the after-sales inspection and maintenance.

I'll tell you, the downstairs don't know how to pretend to understand, and deceive you with professional terms, they haven't played Apple and definitely don't know that there is a cat

Take out the card. Put it back.

There is a lock to unfasten.

Seeing that there is no service, shake the phone at this time, turn the phone sideways, to the left, so that the SIM card slides to the depths, then there is a signal, if there is no signal, the phone is horizontal, gently tap the left side of the screen, ** a moment, there is a signal.

Don't ask me how I know, because I've had the same experience as you ...

The reason for the problem:

The network of the surrounding environment is relatively poor, which will lead to the signal being in a non-service state;

Some reasons of the system itself, resulting in the mobile phone cannot be connected to the network;

Problems with the SIM card of the mobile phone;

Solution: Turn on airplane mode and then turn off airplane mode, and the system will search for network signals again. Open [Settings] in your phone, then turn on the button to the right of the [Airplane Mode] option, wait a few seconds and then turn it off;

Fix the no-service issue by resetting the network settings, reverting to the default factory settings, or by restarting the phone;

You can update the system from your phone's [Settings] - [General] - [Software Update], or connect your computer to iTunes.

Did you break from jailbreak before, and if you did, you could come back.