I have seen posts about bugs like this quite a lot on the forum and I was wondering if there's finally a fix for it. Because none of the threads offer any ideas on how to fix the problem. After finishing the "life during wartime" mission and talking to Johnny I get a call from Takemura that is accepted automatically. He doesn't say anything and just blocks the call screen which means I can't do anything else. I haven't found any ways of avoiding the call or getting rid of the call screen...

Gamebreaking cell phone bug after "life during wartime"