I unlocked and rooted my Neuxs 5 on day one. Right now there seems to be a lot of junk in my phone so i wanna do a factroy reset from the settings menu. Will my phone be locked again and do I have to root it once more?
Thanks!
If you use the internal "Factory reset" option, you won't lose root or re-lock the phone. All that factory reset does, for the most part, is purge your user and app data, wiping out all customizations and getting you back to square one. Your system level apps stick around, albeit with their app data purged. Your internal storage (downloads, pics, videos, etc) are left alone.
Now, if you reflash the factory image via fastboot, which requires that your phone is connected to a computer via a USB cable, that WILL cause you to lose root and, depending on how you do it (manual vs. toolkit, which toolkit, etc), it
might relock your phone as well. This pretty much deletes EVERYTHING on your phone, internal storage and all, and lays down the image as Google had it loaded at LG's factory.