When my phone is asleep and it receives a call, it rings and the display wakes up. However, it wakes up to a locked state, and there is no way that I can see of answering the call. By the time I get the password in and navigate to the phone app, the caller has hung up.
How do I answer the phone?
Quick answer: You don't.
Long answer: Really, you do not, sorry. Hopefully your provider sends you a text message telling you which number tried to call you and that's it. Look at it at a feature, if you will: You are never disturbed by a call anymore and get to choose when to call back. I sincerely wish I had more constructive news for you, but I really don't. Maybe someone else can help, I read one 1 blog that someone's PinePhone starts into WiFi in 4 seconds, how would that be possible? I cannot believe it to be honest.