@UTUS I second the assessment of @rocket2nfinity .
I've always found MMS a bit quirky, but largely it works except for group messages. Can vary a bit depending on provider and APN settings.
Group messages have been a known issue for 5+ years, Ibelieve there's just no fix. I receive nothing, no notification, no error, when someone sends a group message. No way to know anything was sent. I just tell my contacts I can't do group texts. It's more awkward now that iOS picked up RCS.. everyone expects group messages should work.
So far as I know, RCS is on the radar of the devs, but not really even a work in progress yet.. they do incredible work with few people, mostly unpaid.
In Canada, this is the most unusable part of UT. Otherwise it's great! Somehow even my banking works, though this isn't the case for most.
Definitely look into bootloader unlocking before buying. Surest way, as stated, is BE2026 (North American version, non-carrier specific). Most people succeed in getting an unlock token from Oneplus eventually, but they now seem to say they only send one when given proof of purchase from an official vendor or something.
Downgrading to aporopriate Android is a bit tricky.. follow the instructions, using MSM tool and EDL mode. You'll figure it out!
