i didn't try the factory reset until it kept start restarting over again and i got the no command screen. A few days ago i got a pop up on my phone that said my com.google.gms had stopped working. Basically all of my my google play services had stopped, i couldn't open my pandora or youtube either. I just ignored it because those aren't that important to me. I tried to download google play again and this time it let me but said it was an error. There was an ZTE update, the phone turned off, started to reboot right but then just kept restarting. I got the no command robot and followed the directions to get me to the menu to choose the cached partition and all that but nothing is working. The phone is model Z820.
Thanks,
Sarah