This needs more attention. Despite what you see on Apple's spec page, Verizon, T-Mobile and AT&T iPhone 6 have the same model number A1522 and same hardware unlike iPhone 5 and 5S.
before you repeat what people have been saying since the iPhone 5, about the gsm radio only being able to run on gsm, because the verizon iPhone has an added cdma radio. perhaps you should do the experiment. you would be surprised.
i found out that its no longer true. and verizon sims ENABLES cdma on iPhone 6
i purchased my iPhone 6 128 gb t-mobile version. i stood in line wondering if it was true that this time around it would be locked. the store manager said it wasn't locked. i took my new iPhone and wanted to see how unlocked it was. i had a spare AT&T sim on me. neither sims were associated with an account, they weren't "live" sims. when i put the sims in my iPhone, it asked for a carrier update. and the about screens changed to reflect which carrier the phone was working for. this means when an iPhone 6 sees a new sim, it just automatically refreshes its baseband by itself.
well. guess what. on a lark, i decided to put my "live" sim out of my verizon iPhone 5 and guess what. it worked. i was shocked. i thought that maybe the iPhone 6 was like an iPad air / iPad mini retina, and you could only use it for data.
so i figured it was natural , eh , it was okay, that data worked.
so then i decided to try and make a phone call to a regular land line, (Diamond Dan's Pro Wrestling Hotline (317) 335 HOTT) , and guess what. the CDMA radio came active, and the phone call went through. it acted just like my iPhone 5. the 3g/LTE connection went to 2.5 (showing just verizon in the upper left hand corner) and it worked
as far as i can figure out the only difference between a t-mobile and a verizon iPhone 6 is now verzon's white list of verizon devices.
what this means is that verizon cannot and will not put your non vzw iPhone 6 IMEI or MEID numbers on your account. you can't sign up for verizon with a non-vzw iPhone 6, and you can't transfer your service to a non-vzw iPhone 6. but as far as being compatible , for data and making telephone calls it works.
i posted another message on this forum and i have tried notifying ask maggie on cnet of my discovery. but no one yet has verified my claim
i don't know if Volte works. i didn't test that. i didn't test if putting in a "live" AT&T sim will lock out "live" verizon sims. because my 2 other sims i have for t-mobile and AT&T are not active.
when you are running the sim in an iPhone 6 plus ( the phone i had to test on ) , my verizon website no longer listed the iPhone 5 as being on my account. replaced was a generic graphic with NON VZW PHONE and SIM CARD # XXXXXXXXX in its place.
i guess it is possible if i had a real live AT&T or t-mo sim that the phone would of stayed in GSM mode only . that is something i did not try.
i also sent several text messages to my coke rewards using short code #2653 and the sms worked as well
another item i did not test was visual voice mail
this time around there are only two models of the iPhone 6 ( and 6 plus)
a gsm / cdma model ( that is listed as a verizon phone solely by its serial number). like i said before, you cannot activate a new line of service or transfer an existing line of service to the new MEID/IMEI. but if you stick in the verizon sim card, it becomes a verizon iPhone
the other model is a sprint cdma version that runs sprint firmware
yes the call i made did not use VoLTE, because it was a landline. Verizon Volte only works when you call another VoLTE device.
( stuff i said about verizon iPhone 6 only getting VoLTE DELETED )
i spoke too soon. it just took a while for Volte to become enabled!!!!!!!
yesterday i tested visual voice mail, and found out about 30 seconds after the phone got connected to the verizon tower , that visual voice mail came up and that works too.
so the only feature that does not work on the unlocked t-mobile phone with a live pre-activated verizon sim card, is simply officially signing up or officially transferring service to an iPhone 6. as long as you stick the sim card in a t-mobile phone and don't tell them, then it works