There is the latest firmware on the phone (20180124) and I made a factory reset but later than I installed the update. After updating (but before the factory reset) the problem occurred more often. The phone is never totally mute just some kind of sounds are missing (but vibrating function always w...

There is the latest firmware on the phone (20180124) and I made a factory reset but later than I installed the update. After updating (but before the factory reset) the problem occurred more often. The phone is never totally mute just some kind of sounds are missing (but vibrating function always wo...

I have serious issue with my phone. Sometimes it suddenly muted by itself and I can't set the volume up, only rebooting is the solution. Not every sounds are muted: only the ringtone, alarm, notification sounds but screen lock/unlock sound is works.

This option is missing too for me after 20180105.

I tried two different card, formatted to FAT32 (LBA) but the phone doesn't recognise the SD card. Only internal storage exist, I can't find external storage.
The update manager said that the system is up-to-date, but it has the version 20160608.
Any advice please?