After Many attempts at pairing smartwatch Zw 10 with Zmax Pro on metro pcs, I finally activated the watch with T-Mobile for $20 a month data plan.
Since then I've be been able to make and receive phone calls, text messages and play my Google Play Music subscription over the watch and I will tell you… The sound is amazing for the smartwatch on media playback. I had to turn the volume down. ....I wish call volume was as good as media play back. I look forward to the next update for zw10.