Can you also get a Sim card with the same plan ?
And what is the name of the plan ?

My Motorola E5 does not have eSim

Thanks for the info

Just got back for a 16 day European trip (Germany and Czechia) and my Ubigi eSim worked fine.

I was at 2.9 of my 3GB when I checked just before getting on my flight home at AMS.

I did have a bit of an issue that I don't think was Ubigi related -- I have the Boingo WiFi app on my phone. The WiFi symbol showed in the status bar when in my hotel room but I wasn't really connected -- however the phone that I was, so some apps that were set to up/download on WiFi only thought WiFi was connected and did their stuff and I burned up 700MB on Ubigi I didn't really need to. I deleted the Boingo app and things were fine after that. Boingo was somehow interfering with the hotel WiFi login.

I received (and made) calls and texts on my US T-Mobile SIM just fine.

I don't think the data-only eSIM will effect things -- whatever your main carrier did before, they probably will do with a secondary data only eSIM. For T-Mobile, if I let a call go to voice mail (that is, I don't answer) and they leave a message, I get charged for a 1 minute call (25 cents). These always come during my "Do Not Disturb" hours so I don't have a chance to reject them. Robo calls that hang up when connected to my voice mail don't seem to cause a charge.

I think if the phone is off or in airplane mode there isn't a charge. The charges I got were when the phone was on and in Do Not Disturb mode and the caller left a voice mail. The caller disconnected when the voice mail kicked in (as do most spam calls) then I wasn't charged. The few times I declined a call I didn't get charged either.

The forwarding thing won't work for me -- I want to receive calls from those on my favorites list (family, important clients) even in the middle of the night.

My bad, I didn't quote properly. You said you could avoid charges for unwanted calls by all forwarding calls to your Google Voice number. I was saying that wouldn't work for me because I need to receive calls on my primary number (the purpose for me of the dual sim feature). Unfortunately that means I get unwanted calls that might incur a charge from T-Mobile. It wasn't about something technically not working.

I don't use Google Voice so I guess I don't know how it works. I can still answer a call if it is call I want, even though the number has been forwarded to GV?

Has anyone figured out why T-mobile has not allowed post-paid accounts use of the e-sim? If pre-pay has it why not postpaid. Any thoughts?

You can do it, there are lots of how-tos out there. Including in this thread I think.

Well, I took gfunkdave advice and called T-mobile to get a sim swap. I got an idiot on the phone. I told her to send me to tech support to get the sim swap as she did not understand what a sim swap was. Instead, she sent me to a supervisor. We had a very long talk. she told me that they will never use esim for a post-paid account. You are to use the e-sim with a foreign carrier. She also stated that she receives several calls a week when are they going to esim for post-paid accounts. When I got through with her I sent a live chat message for a sim swap. The rep there said they no longer do sim swap with just an EID number. I think they have noted my account so I can not ask for a sim swap. Of course, The foreign carrier I use does not have esim. So I am just outta luck.