The ZTE appears unlockable via well-known Ebay sellers for a few dollars. Decent enough specs for a cheap phone. I haven't tried to look at frequency bands for T-Mo, etc. There is some risk purchasing a ZTE at this point, with possible government sanctions. (The biggest risks might be a lack of any official support, and the possibility, which I consider slim, of delisting on Google Play.)
That seems like a really good deal, if you either need, or can resell, the refill card. (which seems to be delivered as a PIN.)
The catch might be that Verizon seems to have changed things so that the Moto E4 can no longer be easily unlocked for GSM use via 3rd-party methods. (which was what many folks were doing.)
I've seen 2 different explanations of the changes:
1) a new screen during attempted unlock of the phone
that requires verification of an active VZW prepaid account.
2) or simply a matter that the newest ESN's aren't yet available in the unlocker's database.
The big question IMO is whether FP GSM is still data-centric rather than really using cellular for voice ??
Thus far I've always had very poor results in using their app-based stuff for all voice calls EXCEPT when at home with wifi in use - which is not what I have a cellular phone for !!!
Looking at the deal & comments seems to confirm that it is their VOIP & app based service for voice rather than cellular - which means that it will work VERY poorly in our area regardless of how cheaply it may be priced...too bad.
We need REAL cellular services to make calls reliably around here - it is just that simple.
Yes, Freedompop is all data-- no cellular voice even as an add-on with their GSM SIMs. It's not likely to change in the near future.
You can use your choice of VOiP apps for calling/texting, though.
If a data-only connection isn't of value for you, for calling or typical data uses, it would be a poor choice.
But, for 1.5GB of data (after friend's bonus), it's a very cheap data plan on AT&T towers.
Purchasing the muti-month plan through Best Buy (or other 3rd-party retailer) also means no required CC on file with Freedompop: one of the typical concerns.