Verizon iPhones are fully unlocked will work on any CDMA/GSM networks.
Phone needs to be fully paid off though for it to be unlocked.
Even if it is paid-in full, if you used other people's credentials, then the credentails will have to be used in order to fully unlock the phone. (Strictly speaking about direct purchases from online store. No pick up)
[doublepost=1509434637][/doublepost]Ok, I'll just write more information here.
I am aware of the fact that there's a lot of people who used their friends/partners/family credentials to purchase a Sprint/Verizon variant of iPhone X, so they won't have to deal with the ****** inferior Intel modem embedded in GSM Models.
If whoever you borrowed the credentials from do not care about having his/her phone temporarily disconnected or have abilities to drop by Verizon/Sprint store to resuscitate the sim card with their current phone, then you are good to go.
However, for those of you who are not in the type of situation I described above, then it becomes a little bit tricky picky.
1) You used someone else's credentials to pre-order an iPhone X (Apple doesn't give a **** anyway.)
2) You will receive your iPhone on 3rd or later.
3) You are excited because you think you pre-ordered a Verizon variant, meaning it is unlocked to swap out the sim card.
4) You have members of this forum telling you all Verizon iPhones are unlocked due to its agreement with FCC, so you become certain your phone is unlocked as well. These people do not recognize the difference between shipped iPhones from Apple
ONLINE store and Pick-up iPhones at Apple Brick and Mortar Store.
5) You become mad as **** after you swap out the sim, but see the Verizon Activation screen on the phone. You DFU your phone, and still see the god damn thing.
6) You become more mad as **** and contact Apple Live Chat and throw your temper at the live representative, who tries to care about you but you keep saying to the live rep that things like
"I BOUGHT A VERIZON VARIANT! WHY IS MY PHONE NOT UNLOCKED?! HTF DO I GET PAST THE STUPID ACTIVATION?"
I wrote things that are irrelevant too much.
Anyways, here's what you have to know, so that you don't follow the steps above irl.
1) When you receive your iPhone, remove the pre-loaded Verizon sim in your phone.
2) Insert your own sim. It can be t-mobile, simple mobile, virgin, sex mobile, **** mobile, kinky mobile, or whatever.
3) If you don't have a sim, just get your phone connected to the wifi.
4) Get past the Verizon Activation by entering the credentials you used to pre-order your iPhone
5) Once you get past the activation phone, congrats. Your iPhone is now activated and unlocked.
6) Destroy the pre-loaded Verizon Sim. You are now free to insert your own sim card. If you don't have one, then get one goddamn it.
7) Do not worry about the possibilities of deactivating your friends/family/partners/alien's current phone sim card and service because you just activated your brand new iphone X. THEIR SIM CARDS WILL NOT BE CANCELLED AND DEACTIVATED OR TERMINADO OR MUERTO..
8) The reason for #7 is because Verizon Activation screen pops up to verify that it's real you who ordered the phone. Activation has to do with the Apple Server that might be located in CA/NY/Earth/Moon/Mars. Verizon don't even know **** about your iPhone X unless you insert the pre-loaded Verizon Sim that came with your phone..
Nuff said.