Why is the signal of Samsung N719 Telecom suddenly gone

Based on your description, it is recommended that you:

1.Shut down and restart.

2.Change the location.

3.Replace the SIM card.

4.Back up your phone data: contacts, short messages, multi** data, etc., restore your phone to factory settings: Settings - Reset - Factory Reset - Reset Device.

Click here to troubleshoot:

Whether the SIM card is inserted correctly.

Whether the wrong SIM card is inserted, such as the standard version inserts the telecom SIM card, etc.

Go to Hardware Detection to see if the SIM card is working properly (enter * * on the dial screen). If the SIM status is normal, go to step 5, or if the status is unknown, go to step 4.

Try to replace a different SIM card, if the status is still unknown during hardware testing, it is recommended to go to the repair point for testing; If the detection status is normal, it is recommended to go to the carrier to replace a SIM card (the SIM card may be aging).

Whether the network type is correct and whether the carrier selects Automatic. (China Unicom selects 3G priority, mobile selects only 2G, and China Telecom selects automatic).

If the network type of the non-telecom mobile phone is CDMA automatic, you need to change the network type to "wcdmapreferred" in the mobile phone information (**) to solve the problem.

Whether there is no signal in the area. You need to check whether other mobile phones on the same network have signals.

Back up your data, flash to the latest system version and try again.

If the above methods still do not solve the problem, please go to the nearest repair point for repair and inspection.

The telecommunication signal is inherently poor, and the situation without signal is usually as follows1: not in the service area, such as the basement 2: your mobile phone has been set up in the factory, or brushed the machine, even if it is not, sometimes you will not pay attention to the mobile phone imei number, if the imei number is gone, there will be no signal, no service, enter * on the mobile phone dial keypad to view imei....

Did you solve it, and I'm like that now. I don't know what to do.

Hello: According to the situation described, it is recommended:

1. Turn off the power and take out the SIM card, and use the eraser to wipe the SIM card chip.

3. Upgrade the firmware version of your phone. Operation: Settings - About Device - System Update - Update. Upgrade Considerations:

1) The phone needs to be set to the current time.

2) The firmware of the mobile phone is generally large, and the upgrade process may consume a lot of traffic, if it is convenient, it is recommended that you can upgrade the firmware of the mobile phone through WLAN Internet access.

3) It is recommended to back up the data in the mobile phone before upgrading, such as **Ben, **, etc.

4. Try to change other SIM cards.

If the above method does not work, it is recommended that you bring the purchase invoice, repair card and machine to the Samsung service center for inspection.

Welcome to Samsung's Digital Services platform.

Based on the description, we recommend that you try the following steps:

1. Restart the phone (so that the phone can search and register again) 2. Under the standby desktop - click on the application - Settings - More - mobile network - network operator - search network - select the network operator supported by your SIM card.

3. Wipe the mobile phone card chip (whether it is a SIM card with poor contact) 4. Try to replace a SIM card (whether the SIM card is aged or damaged) 5. Back up mobile phone data (**thin, SMS information, multi**data, etc.) Restore the mobile phone factory settings: Settings-Reset-Restore factory settings (rule out whether the fault is caused by software).

If the problem persists, there may be a system or hardware problem, and it is recommended to contact the Samsung Service Center for testing.