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Why does a Samsung mobile phone with dual SIM cards have no sound when a text message comes from one card?

If there is no message tone when receiving a text message, it is recommended:

1. Try to reset the text message: Message-Menu key-Settings-Notification check and select ringtone.

2. Check whether the phone is in silent mode, pull down the top curtain to turn the sound green.

3. SMS-Menu key-Settings-Notification-Tick.

4. Set the notification volume on the mobile phone (Settings-Sound-Volume-Notifications, increase the notification volume).

5. Try changing other built-in system ringtones.

6. Please back up the data in the phone (contacts, text messages, pictures, etc.), and then restore the factory settings (Settings - Reset Settings/Privacy/Personal—Restore factory settings).

If the problem persists, please bring your purchase invoice, repair card and machine to the Samsung Service Center, where professional after-sales engineers will help detect it.