Can I watch IPTVZ on my TV and on my phone?

Yes. You can install your IPTVZ login on as many devices as you like: the living-room TV, a bedroom Firestick, your phone and your tablet.

The number of connections on your plan decides how many of them can play at the same time. With a 1-device plan, one screen can stream at a time; watch on the phone or the TV. If two people want to watch at once, choose a 2-device plan.

See the difference between a connection and a device.