Samsung i9 100 has no signal, so you can't make phone calls or send short messages, but you can connect to wifi. How to solve it?

According to your description, you can try the following methods:

1. Restart the machine.

2. On the standby screen, click Applications-Settings-More-Mobile Network-Network Mode-Select GSM Only.

3. Test whether this is the case in different geographical locations, and initially eliminate the problem of network signal coverage.

4. If conditions permit, replace the SIM card for testing.

5. Check whether the mobile phone is equipped with software such as security guards or incoming calls, and then try again after uninstalling.

6. (Backup data: phone book, SMS, multimedia, etc. ), I suggest you restore the factory settings.

After restoring the factory settings, it still cannot be solved. It is recommended to send the mobile phone to the nearest Samsung service center for testing and further processing.

It is recommended that you apply for "booking to the store" in Samsung official website and enjoy priority maintenance service:/pre-order.

After the appointment is successful, please bring your machine, invoice and warranty card to the service center you reserved on time.

If you have any comments, suggestions and comments, please click: support.samsung.com.cn/survey.