N7 100 can't send or receive messages, and the alarm clock doesn't ring.

1 It is recommended that you restore the factory settings of the machine, as follows: Settings-General/Reset-Restore the factory settings (however, since restoring the factory settings of this machine will lose all data in your mobile phone, it is recommended that you back up important data such as phone book, videos and pictures in advance).

2. It is recommended that you try to upgrade the firmware. (Settings-About Equipment-System Update) If there are still problems through the above methods, please bring the purchase invoice, warranty card and machine to Samsung Service Center, and the engineer will check and handle the machine. Please click the following link to find out the specific location of Samsung Service Center:.