Why does my keyboard disappear even after I restart my phone?

[AC Question]

I use Hangouts as my main texting app, but recently, after I've updated my LG G3 phone, there are times where the whole app would just crash or the keyboard wouldn't show up at all. I would have to restart my phone, but even then sometimes it just wouldn't show up even after I've restarted it. What do I do?

 

[B. Diddy]

Welcome to Android Central! Did you update to Lollipop? I've been seeing a number of posts about problems with the update. Do the problems persist in Safe Mode? https://support.t-mobile.com/docs/DOC-11934. If they do, then you may have to consider a factory reset.