Samsung S4mini i9 192 dual-card version signal problem.

The model you are consulting is not listed in Chinese mainland, so we don't have relevant targeted information at present. For similar problems of Chinese mainland listed vehicles, please refer to relevant setting methods.

1. Under the standby desktop-click Applications-Settings-More Networks/More Settings-Mobile Networks-Network Operators-Search Networks-Select the network operators supported by your SIM card.

2. Take out the SIM card and clean the metal contacts of the SIM card with rubber. (Is the sim card in poor contact? )

3. Try to replace the sim card (regardless of whether the SIM card is aging or damaged).

4. Check whether the mobile phone is equipped with software such as security guards or incoming calls, uninstall it and try again.

5. Back up mobile phone data (phone book, SMS, multimedia files, etc.). ) and restore the factory settings.

If the problem still exists, it is recommended that you send your mobile phone to the nearest Samsung service center for testing and maintenance.

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.