Samsung S7Edge dual SIM has one card that is not in the service area and has no signal

If there is no signal on the phone or an emergency call prompt is displayed on the screen, the Samsung S7 Edge phone is generally recommended to do the following:

2.Check if the SIM card is activated: Settings - SIM Manager - Sim1 SIM 2 - Tap the SIM card icon - Slide to turn on.

3.If there is still no signal, it is recommended to turn off the SIM card and remove it, wipe the SIM card chip with an eraser, and then reinstall it.

4.If it doesn't work, try to change to another location to rule out whether it is caused by poor signal coverage in your location.

5.Try to change the network mode to 3G or 2G (do not select the auto-connect mode). Note: Some machines do not support changing the network mode.

6.Try to change another SIM card.

If there is still no signal or emergency call is displayed after the above operations, please bring the purchase receipt, warranty card and device to the Samsung service center for inspection.

It is recommended to follow these steps:

2.Take out the SIM and clean the SIM card metal contacts with an eraser. (Whether it is a SIM card with poor contact).

3.Try to replace a SIM card (whether the SIM card is aged or damaged)4Check whether the phone has software such as Security Guard or Calendex installed, and try to uninstall it.

5.Back up your phone's data (book, SMS, multiple files, etc.) and restore factory settings.

If the problem persists, it is recommended to send the phone to the nearest Samsung service center for testing and repair.

If you can't turn on the "Dual SIM Always On" function on your phone, we recommend that you:

1.Check whether the two SIM cards are recognized normally;

2.Whether both SIM cards support call forwarding or call waiting and turn this feature on (contact the network operator);

3.Shut down and restart, or try to change to another SIM card;

4.Check whether there is a new version of the machine system and try to upgrade the system.

5.If it doesn't work, back up your important data and try to restore it to factory settings.

6.If the problem persists, please bring the purchase invoice, repair card and machine to the Samsung service center for professional after-sales engineers to help test.

Hello dear, if the mobile phone cannot access the Internet normally, you can troubleshoot according to the following conditions: [Situation 1] The contact between the metal contacts of the SIM card and the mobile phone is not sufficient, you can reinsert the SIM card to try. [Situation 2] If the SIM card is damaged or there is a problem with the mobile phone, you can change the phone to test whether it is the SIM card or the mobile phone that is faulty.

Situation 3] The current location is a signal blind spot or suddenly no signal, you can change the place to test the forest and pay attention to whether the mobile phone signal of other users around you is normal. [Situation 4] If the mobile phone card is in arrears or is shut down, you can pay off the arrears and turn on the phone. [Situation 5] The service is suspended due to abnormal use of the number, such as the number being used for illegal or illegal activities.

Situation 6] Roaming in Taiwan, Hong Kong, Macao or abroad can only be used after enabling Taiwan, Hong Kong and Macao roaming and international roaming. [Situation 7] If the total traffic generated by the Internet in the current month reaches the ** traffic cap value, the system will automatically turn off the Internet access function, or limit the speed of the network, and the next month will automatically resume the opening, which shall be subject to your ** traffic cap rules.

The S7 Edge is a dual-SIM dual-standby single-pass mobile phone that supports 2G 3G 4G networks of China Mobile, China Unicom and China Telecom, but the two card slots cannot support telecom networks at the same time.

Note: When inserting dual SIM cards, one of the card slots can support the 4G 3G 2G network of China Mobile Unicom Telecom, while the other card slot only supports the 2G network of China Mobile Unicom Telecom.

The S7 Edge is a dual-SIM dual-standby mobile phone that supports 2G 3G and 4G networks of China Mobile, China Unicom and China Telecom.

Note: When inserting dual SIM cards, one of the card slots can support the 4G 3G 2G network of China Unicom Telecom, while the other card slot only supports the 2G network of China Unicom Telecom, but the two card slots cannot support the telecom network at the same time.

Samsung S7Edge phone configuration:

The front of the Samsung Galaxy S7 Edge uses an inch Super AMOLED magic screen, with a resolution of 2560x1440 pixels at the Quad HD level, and the display effect is still delicate.

At the core, it has a built-in Snapdragon 820 processor and 4GB RAM LPDDR4 running memory, which can run Android smoothly.

At the same time, the machine also has a built-in 3600mAh capacity battery, which supports fast charging technology (.

On the back of the fuselage, there is a 12-megapixel camera with a large aperture and a corresponding 5-megapixel front camera.

If your phone is not able to access the Internet with mobile data, it is recommended that you:

1.Check whether the SIM card of the mobile phone has the Internet function enabled.

2.Make sure mobile data is on: Swipe down the top curtain to turn on mobile data. If you have a dual-SIM phone, check whether you want to switch to a SIM card with data activated.

Note: Some CDMA dual-SIM machine card 2 does not support mobile Unicom SIM card Internet access).

3.Check whether to set a data usage limit. On some machines, [Limit Data Usage] is enabled, and the mobile data function will be automatically turned off when the data is exceeded.

4.Check whether all Internet access software or browsers are unavailable. Some machines support [Limit Application Traffic], which can control the use of individual applications to access the Internet using the mobile phone or WLAN.

5.If you still can't access the Internet after checking the above contents, it is recommended to reset the Internet access parameters of your mobile phone: Settings - (More Settings) - Mobile Network - Access Point Name - More (Menu Key) - Reset to the default settings.

6.If it doesn't work, try to replace it with another SIM card to rule out whether it is a SIM card.

7.Try it after changing the time period or changing to a different location.

8.If it doesn't work, please back up the data in your phone and restore the machine to factory settings.

9.Check if your phone has a system update push notification and bandwidth, and if so, upgrade your phone to the latest version in a Wi-Fi environment.

If the problem persists, please bring the purchase receipt, the repair card and the device to the Samsung service center for inspection.

If your mobile phone's SD card shows that the total capacity is unavailable and the free space is unavailable, it is recommended to:

2.If the SD card has enough remaining capacity, it is recommended to remove the SD card and put it in the mobile phone for observation.

3.Change to a different SD card and see if the same prompt appears on your phone.

4.Back up the contents of the SD card, try to format the memory card.

5.Uninstall and delete recently installed software.

6.If it doesn't work, back up the data in the phone (such as contacts, multiple files, etc.), and restore the phone to factory settings.

If the problem persists, it is recommended to send the phone to your nearest after-sales service center for testing.