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Why can't Samsung S7 send messages and make phone calls, but the messages and phone calls sent by others are still?
It is recommended to try the operation according to the following steps:
1. Restart the phone (so that the phone can search and register again)
2. Under the standby desktop-click on the application-Settings-Connections-More Networks-Mobile Networks-Network Operators-Search Networks-Select the network operators supported by your SIM card.
3. Wipe the contact point between the mobile phone card and the mobile phone (whether the sim card is in poor contact)
4. Try to replace the sim card (regardless of whether the SIM card is aging or damaged).
If the problem still exists, please bring the purchase invoice, maintenance card and machine to Samsung Service Center, and the engineer will check the machine.
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