According to your description, I suggest:
1. Standby Page-Applications -Settings-(General/More)-Application Manager-All-S Voice or sogou Voice-Clear Data.
2. If the mobile phone supports online upgrade, it is recommended to update the firmware version of the mobile phone. Operation: Settings-About Device-System Update-Update (please back up the data in your phone before upgrading).
3. If not, please back up the data (contacts/photos, etc. ) in the phone, and then restore the phone to the factory settings (Settings-Privacy/Personal/Reset)-Restore the factory settings.
If the problem still exists, please take the purchase invoice, maintenance card and machine to Samsung Service Center for inspection.
Service center address:
. Samsung . com/support/service locations . ASP
If you have any comments, suggestions and comments, please click: support.samsung.com.cn/survey.