In many cases, you do not receive calls when your phone is vibrating or silent.
If you do not receive a call when you are vibrating or silent, you can ring after 7 seconds.
You can not change the phone mode after you set the ring tone after ringing or silent after ringing the phone.
Change to the desired phone mode after unsetting
Bell after Silent or Vibration
you can ring after 7 seconds.
9Apps 4.9
