Device might be in place where ringtone is set off.
If device location is not known and you have even one place with ringtone off setting, device will be silent until location is found and device knows that it's not inside the "silent place".
Device might be in place where ringtone is set off.
If device location is not known and you have even one place with ringtone off setting, device will be silent until location is found and device knows that it's not inside the "silent place".