ZTE Z998 / Unico LTE

Anybody have luck getting this phone SIMMed to Verizon towers? I'm in Greensboro NC... T-Mob too spotty - prob AT&T would work but the Verizon system, in my experience give the best GPS satellite signal in way out places like ND & MT... any thoughts on CDMA / ST / Verizon combo? (I'm looking for the Unico on Ebay used... tricky getting the right SIMM out of ST - always seem to not get clear answers... but my SIMM/cell phone knowledge is limited... = (