I like the phone. It's a great deal and I'll definitely keep it. But, I also think it may be a hard sell with T-Mobile about to turn on 600 Mhz 5G to a huge chunk of the country.
I really hope ZTE releases a version supporting the "new" T-Mobile low/mid 5G bands (600 Mhz & Sprint's 2.5 Ghz). These are the bands the new T-Moble OnePlus supports (Probably using the Qualcomm X55 modem).
I'd still take this over the T-Mobile One Plus because:
SD Card Slot
12 Gig Ram