What should I do if there is no signal when the data is turned on on the mobile phone, and there is

1.Restart your phone (so that your phone can search and register again)2Under Standby Desktop - Tap Apps - Settings - Connections - More Networks - Mobile Networks - Network Operators - Search Networks - Select the network operator supported by your SIM card.

3.Wipe the contact points between the mobile phone card and the mobile phone (whether it is a SIM card with poor contact) 4If the problem persists, please bring the purchase invoice, repair card and machine to the Samsung service center, and the engineer will check the machine.

1. There is no signal or the signal is relatively poor, mainly because the signal will be affected by various factors such as terrain, landform, and high-rise buildings in the process of propagation, such as the current location is in a relatively closed place, and the signal may be affected.

2. If the mobile phone signal of other China Unicom users is normal, the following methods can be used to troubleshoot:

Method 1] Turn on airplane mode, then turn off or restart your phone and try again.

Method 2] Test of changing the phone card to change the mobile phone card to the mobile phone of a family member or friend and try again.

Feedback, we will check and deal with it as soon as possible.

Summary. 4.Try to replace a SIM card (whether the SIM card is aged or damaged) If the problem persists, please bring the purchase invoice, warranty card and machine to the service center, and the engineer will check the machine.

2.Under the standby desktop - click on the application - settings - connected or not connected - more networks - mobile network shirt - network operator - search network - select the network supported by your sim card Yunchachang Business 3Wipe the contact points between the SIM card and the phone (whether it is a SIM card with poor contact).

4.Replace a SIM card and try to hide this test (yes to eliminate whether the SIM card is aged or damaged) If the problem exists quickly according to the stove bridge, please bring the purchase invoice, repair card and machine to the service center, and the engineer will check the machine.

Hope it helps, dear.

It's also turned off.,What's that.,The card has also been changed.。

Dear, there is a problem with the hardware of the phone.

Need to go to the after-sales overhaul, dear.

Solution: 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, China 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 "WCDMA Preferred" 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 help you solve the problem, please go to a nearby repair center for repair inspection.

1.Make sure that there is no arrears on the mobile phone and that the mobile data service has been activated on the mobile phone;

2.Verify whether the mobile phone has turned on the "Mobile Network Data Service", and set the path as follows: in the normal standby interface, swipe down from the top of the screen, data connection (light up icon);

3.Try resetting the access point to its default settings; Open Settings - Wireless Network Settings - Mobile Network --- Access Point Name, click the menu button at the bottom left, and select Reset to Default Settings;

4.Try to switch access points, open Mobile Network - Access Point Name, and select a different access point to switch;

5.If you still can't access the Internet, try "Create a new access point". The parameters need to be provided by the network operator, and after the setting is completed, you need to click the menu button at the bottom left - select Save; Set the path: Settings - Wireless Network Settings - Mobile Network - Access Point Name, click the menu button at the bottom left - Create APN

6.If it still doesn't work, it is recommended to try a different SIM card to rule out the problem of the SIM card itself that causes it to be unable to connect to the Internet.

Dear, the phone can't open the data network is likely to be an internal problem of the phone, you can restart the phone;

It may also be that there is a problem with the access point of mobile data, open [Settings], click [Mobile Network] - [Mobile Data] - [Access Point Name], click the [Three Points] icon and select [Reset to Default Settings].

If there may be a conflict between the data and the wireless network, you can turn off the wireless network function;

It may also be caused by the arrears of the mobile phone.

I hope my reply can help you.

Summary. To check VPN (Virtual Private Network), please go to Settings - Other Networks and Connections - VPN, check and confirm whether the VPN is used, if so, it is recommended to turn off and try again. To view the network settings, please go to Mobile Network (SIM Card Information and Settings--Corresponding SIM Card) - Access Point (APN) or Set Mobile Network Dual SIM and Mobile Network - Access Point (APN), and click"Reset to the default settings"restart your phone.

My phone has a signal, but I can't turn on the data?

Open the quick center of your phone (scroll down at the top or up at the bottom) to see if the data network is turned on. Confirm the status of the mobile phone card to ensure that the balance of the mobile phone card is sufficient, if the payment is in arrears, please restart the mobile phone after the recharge is successful. Check with your carrier to see if you have reached the traffic limit.

If necessary, you can change the SIM card that can access the Internet normally to confirm.

If your phone uses a metal, magnetic case or bracket that has an impact on your phone's signal, it is recommended that you remove it and try to slip it on. If you are in an underground parking lot, elevator hall and other environments, the coverage of the mobile phone signal is susceptible to these environmental impacts, the signal will be relatively weak, and the data network will also be affected, it is recommended that you go to an open area, such as an outdoor open environment for testing. To view the network permissions, please go to the mobile phone i butler - traffic management traffic monitoring - network management Qingrang sedan or Yu Xi Set applications and permissions - permission management to check whether the application network permissions have been turned on.

To check the VPN (Virtual Private Network), please go to Settings - Other Networks and Connections - VPN, check and confirm whether the VPN is blocked, if so, it is recommended to turn it off and try again. To view the network settings, please go to Mobile Network Settings - Mobile Network (SIM Card Information and Settings - Corresponding SIM Card) - Access Point (APN) or Set Mobile Network Dual SIM and Mobile Network - Access Point (APN), and click"Reset to the default settings"restart your phone.

To research the network or reset the network settings, please open and quietly enter Settings - Other Networks and Connections, and turn it on"Airplane mode"After turning it off, please enter Settings - Mobile Network for 5G mobile phones, turn it off and turn it on"5G enabled"Select the slag item, if necessary, please go to Settings - System Management More Settings - Backup & Reset, select"Reset your network settings"Try again.

It is really a very urgent thing to have no mobile phone signal, it's okay, today I brought you a few tips to enhance the mobile phone signal.

1. Turn on airplane mode.

When you find that the mobile phone signal is not good, you can try to turn on the airplane mode, after the airplane mode is turned on, you can wait for a while and then turn it off, after turning off the airplane mode, the phone will automatically start to search for the signal and connect, so that the mobile phone signal can return to normal.

2. Restart your phone.

In addition, you can also restart the phone to restore the mobile phone signal, restarting the phone is also a good way, generally after restarting the phone, the signal logo will reappear, so that you can also re-search and get a stable signal. This method is also suitable for use in computers.

3. Change the network mode.

In addition, you can also restore the enhanced phone signal by changing the network mode, now many people will set the network mode to 4G mode, so you can try to change the 4G mode to 3G mode, because the 3G mode is more stable than the 4G mode, so you can try to change it to see if the phone signal is improved.

Mainly due to the following reasons:1. The mobile phone is used for a long time, and there are many garbage and temporary files, which affects the normal play of system functions. Need to clean up the garbage.

2. The compatibility problem between the system software and the user software is serious. It is recommended to restore the factory settings after using it for a period of time, which is stable and fast.

3. The signal in the area is not good, and you need to change places.

Recommended when using a mobile phone:1: Try to pick up in an area with a good signal**.

2: Reduce talk time in areas with poor signal quality.

3: If you play for a long time, it is best to use wired headphones to call**.