I have made my app default calling app but for incoming call i don't want to use my UI i want to handover that incoming call to system default app actually i am rejecting specific an incoming call from my default app but when other call come i want to handover it to default system app how can i achieve this i have seen apps on Play Store doing this i have gone through all of the InCallService
methods but i couldn't find any method to handover calls to system calling app i tried this method too but its giving exception no activity found
Intent intent = new Intent( Intent.ACTION_ANSWER, Uri.parse( "tel:" + number));
this.startActivity( intent );