While making a call, during a call or when an incoming call is there the display generally does not show any information of the caller. Many a times the phone rings during an incoming call but no notification is shown for the whole duration of ringing. I have also updated, uninstalled and reinstalled the application. Tried with deleting the data and cache as well. Nothing works & I have a phone with great specs if it is a doubt. App creaters do not seem to be interested in resolving the issue.