What's wrong with Samsung's straight mobile phone not calling?

According to your description, I suggest you try the operation according to the following steps:

1. Under the standby desktop-click Applications-Settings-More Networks-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.

For specific questions about the service center, please visit:

. Samsung . com/support/service locations . ASP