After 2 weeks on Nougat, Bootlooped! T MO is sending a refurb. Oh well.
I've had plenty of experience with both channels having returned 4 G4s for bootloop problems. The one they returned for my son was considerably better looking than what we sent in. I took a guess at they sent back a new unit which they printed a new sticker for with the old IMEI number. It would muck quicker printing a sticker under the battery than actually fixing something. That lasted another 6 months and then the video went out. Oh well, if it doesn't look right I'll send it back.