Phone rings but screen doesn't change so I can answer.

Groupie

Phone rings but screen doesn't change so I can answer.

Samsung J3 Emerge is the phone. Recently it has taken a very long time to change screens from one function to another, now the phone rings but the screen to answer, (either the small one on top or full screen with the options), does not come on. It stays on the the same function that it was on before it started ringing. 

Have had it since Dec 18, 2017 and never have liked the way it functions or operates, because of glitches or some stupid thing.

I've begged Boost to replace it, (been a customer since 2007), but they don't care.

Now they want me to send the phone to Samsung so they can flash it, which can be done locally, and leave me with no phone for 2 weeks.

I'm so mad I want to sue Boost for failure to service.