Wow, good to hear you got it to work.
But I tried everything on my end to get it to work with T-Mobile and only have the 2g network for calling and then the 4g for the text and data.
My question is does it switch to 2G network before dialing out or receiving a call?
I know in Israel they still rely on 3G network so that might be the reason why it works, but curious in the US did it search for a 2g band before making the call?