My blue phone it rings and there's no way to answer it nothing pops up

I'm having the same problem with my blue phone it rings and there's no way to answer it nothing pops up and I've tried pushing the middle of the screen as someone said that doesn't work does anyone know how to fix this problem thanks

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0

crwdns2942205:01crwdne2942205:0:

Hi,

What is the model number of the phone?

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

crwdns2934285:0crwdne2934285:0