Android Video Call after the call waiting, to the third party video call, after the call time has been displayed as 0, after a few seconds video call automatically hang up

Turn on call setup Video call "Wait";
Step 1: The test machine and the match machine A are in the video call process;
Step 2: Match machine B to the test machine outbound video calls;
Step 3: Test the machine to answer the video call of the match machine B;
Phenomenon: Video calls are automatically broken after a few seconds


Locate the file Alps/packages/apps/phone/src/com/mediatek/phone/vt/vtincallscreen.java,
Find function Internalanswervtcallpre (),
The following two lines are:
Vtincallscreenflags.getinstance (). reset ();
Vtincallscreenflags.getinstance (). Mvtismt = true;
Move to the front of the following line:
if (vtcallutils.isvtactive ()) {

Android Video Call after the call waiting, to the third party video call, after the call time has been displayed as 0, after a few seconds video call automatically hang up