How do you fix my launcher when its stopped?

Turn off phone & restart.

"Buy a new phone.

Try to take batteries out of phone let it sit for a few min then try to restart phone. Also try to set phone back to factory setting."

I had the same problem 2 weeks after i got my ZTE piece of crap phone. I hate this phone. I read online from someone that they had the launcher problem also so i was prepared and as soon as it went down i swapped it out for a launcher from Google PlayStore. Its called ZenUI Launcher its 45mbs and has worked perfect but there are so many to pick from just take your time and read the reviews. Hope that helps.

Same issue, just completely shut down can't take battery out so no Google anything, am I screwed?

If your Android pops a notice "unfortunately launcher has stopped working* and you push OK but the notice has frozen your phone or tablet you may be hacked, infected with a virus or something other than the real App? Because every other notice that stops working, when you hit OK it leaves the screen for awhile so you can go into your settings? There's still another way, if you press your up volume and on/off button at the same time a a sub screen comes up ( my Alcatel 4.4 is blue and mine wouldn't work, but this helps a lot of users). Once it comes up use the volume keys to navigate or scroll to get into settings. You are going to have to factory reset your phone. I have done this before and never ran a backup with my Google acct. and they saved everything anyway. If you can't get that sub screen? Try navigating around the notice while tapping the OK key. That's how I finally got into my settings. Just because you downloaded an App from the Google Play Store, dies not make it safe from malware, Adware or spyware. And FYI Google changed the OPT out AD version to accept ads so we can get free Apps. They are embedded in the Apps? The Ads are set to our browsing preferences and history. My phone didn't come with any security just remember your phone is 10x's more vulnerable than your computer!