I have a Verizon LG-V60 UW on T-Mobile and it worked perfect on 5G in the Missouri area. I'm almost in Arkansas and I'm still getting 5-G. It used to do the shuffle where it would go from 5G down to 3G or HSPA when I would make a call which means I wasn't getting VOLTE because if I were, then it would not need to drop to 3G or anything less than 4G LTE to make phone calls. I could be wrong, but I think it's a slim chance, I suspect the deficiency is not with the hardware, i.e., the Verizon model has enough bands to support VOLTE even on T-Mobile's Sprint-T-Mobile combination of towers, (hence the ability to receive consistent 5G) but Verizon has found a way to defy the deal they signed onto when the FCC let them come in before the doors were open to bid on spectrum privately and Verizon promised to make phones that were SIM unlocked for...ever. They have been bucking that clause in the agreement ever since, but of lately they are REALLY pushing back at the FCC by locking SIMs, and the FCC has capitulated a few times IMHO by allowing Verizon to lock them under certain circumstances such as if a device is not paid off or not on their network long enough- which begs the question, what did they get from Verizon that's any different from the rest of the carriers? That is the industry standard, but I digress. Point is they want to tether their phones to their network and they have started to decide some more thoughtful ways as opposed to just defying the FCC outright by locking the SIMs, and one of them is to deny WIFI calling if you are not on their network with the V60 at least. You are directed every time the phone powers up to put in your address for 911 purposes since WIFI calling doesn't always transmit the address to the police like the E911 would on a cellular call. This is NOT a requirement, by the way, there is no law that says you can't make phone calls over wifi without appraising the police as to where to send the cops if you ever dial 911 over WiFi. But, there is no way around Verizon's interface on the LG-V60, and, as you can guess from my rant, you will never be able to successfully update your address with Verizon if you are on TMobile, or anybody else that I've seen because it will just bounce around for a few minutes of pointless waiting to come back and tell you that something went wrong and you can try again... But don't. There isn't any purpose and they know it. You won't be able to update Verizon's databases from another carrier unless maybe you still have an account with Verizon, and that's still debatable from another carrier. So no WiFi calling on other networks. Ever. Same thing goes for VoLTE. It never provisions if you are on T-Mobile. Can't, Verizon has locked the door. It did work when I first got the phone. Then, I reset the phone and since I did not have initial access to Verizon's network, it did not provision (unlock the VoLTE). Unfortunate for me, I bought my device from the internet swap site and I checked the company's IMEI checker which green-lighted the sale by giving me the false impression that the device had no blacklists for theft or financial non-payment. Then, when I tried to circumvent the new way to prevent their Verizon customers from escaping by putting in my girlfriend's Verizon SIM in long enough to provision all the barriers aforementioned, and it locked her SIM up simply because the guy sold me a phone and Verizon told me that they can say that the IMEI is good quite a while after a person sells an unpaid phone before changing their report that the phone is clear and free to it is black listed, meaning that it is almost pointless to rely on their IMEI check because anyone can sell the phone while they owe a thousand dollars on it still and then, after you give them $900, they simply quit paying and you have all the problems of a blacklisted phone even though you were told it was a-ok when you checked with them and ran the IMEI before buying the phone. It was hell trying to get my girlfriend's phone working again after they unceremoniously shut it down for punishment of putting her Verizon SIM into a Verizon phone that someone had stopped making the payments. It wasn't stolen mind you; do not put your SIM in anybody's phone if you have a Verizon SIM because they won't tell you that it offends them, they just **** your service off and now you have to contact them and if it's on s holiday weekend like it was for me, you are screwed for a couple days. I was, and I was lost- no gps and running out of gas in the middle of nowhere. Long explanation, but it could be critical if someone owns a Verizon phone or attempts to buy one and puts their SIM in it to see if it works- God can't help you if you do.
