Did you delete the LgHome.apk on your LG L70? Then look here.
Yesterday I accidently deleted my LGHome.apk file on my LG L70, after my phone rebooted, the only thing i saw was a black screen and i couldn’t do nothing, i could only receive call.
Finally after messing with my phone for a few hours I installed the LG launcher to get my phone back working.
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