After patch (no root either)! Recommended by a commenter on a previous video, here is how to remove the lockscreen ads from the promotional phones of the BLU R1 HD or Moto G4. This is only temporary and you will have to redo this or swipe away ads from time to time; they patched the permanent way.
Check out my other videos on the BLU R1 HD (it's a great phone!):
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