Putting AT&T Simcard in Verizon Phone

Hello Community!

It is important to know whether you will be able to use the phone you know and love on our network, especially now, since we phased out our 3G network.

Not to worry. It's easy to find out if your device will work now that we've upgraded our network. To know where to begin, check out our compatible device list. If your phone is on the list, you're good to go.

If it’s not listed, you may need to update your current device, or get a replacement.  Or, if you have a phone that should work, but isn't, you can also check your APN settings to confirm they are correct.

Heads Up: Customers using an unsupported device will need to upgrade to an HD Voice capable device, upgrade their SIM, or both. Even if you have a compatible SIM card, you will need to make sure the device you’re moving your SIM card to will work on our network.

Because 3G is now gone, we no longer activate phones that don’t support HD Voice. With AT&T HD Voice, you enjoy a higher level of voice quality when you make and receive calls.

As explained under SIM card compatibility:
AT&T HD Voice requires a SIM card that is UICC-G or higher SIM card installed in your smartphone to enjoy the rich calling experience of AT&T HD Voice. Want to make sure to find out if your SIM card is HD Voice compatible?

In the SIM card number, look for the digits 27 or higher in the 9th and 10th positions. Don't have a compatible SIM card? Get one at an AT&T Store.

AT&T BYOD (Bring Your Own Device) means you bring your own unlocked, compatible device to AT&T. Even if you didn't buy your device from AT&T, you can activate your phone on a new AT&T plan.

Switching is simple! Just make sure the device is unlocked then then choose a new plan or add a line to an existing wireless plan. BYOD comes with some amazing benefits. You don’t have a contract, and you can keep your current number if it’s eligible for transfer.  Grab your favorite phone, wearable or tablet and make the switch.

We hope this info helps!

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@KcLinux wrote:
It all depends the exact model and specs some dumb reason all phones are
made somewhat different . I assume to make more money lbs . But either way
it will work with the correct APN and cellular (mobile data) setting.
iPhones do not require APN settings
No unlock requires.
Not true.  A lock phone will not work on another carrier and no APN settings will fix that.
Some phones may only give you a "E" up top representing. 
E is edge,  2G on ATT and you won’t see it on ATT anymore. 
your data tho which stand for edge basically 2g ..
ATT has no 2G network 
.. If have Wi-Fiavailable
as well and it's a nice phone might be worth it to you tho. I recommend to
try before buy .

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A Verizon iPhone 6 is unlocked and will work fine on ATT.

All Verizon iPhones are automatically unlocked? So I don't have to make sure the seller goes through a process to unlock it?

All Verizon phones in the last few years are unlocked. I'm not sure of the exact date, though, but for iPhones since the 5s.

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@Samkelly337 wrote:
That's kinda my question too. I upgraded from an iPhone 6 to galaxy s8+ and someone wants to buy my phone, I have Verizon. They have at&t or tmobile I believe. I didn't know if they could just put their sim in

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Verizon does not lock its phones (not allowed per FCC agreement).  Not all phones will work well on other networks.  iPhone 5S, 6, 6S and 7 from Verizon are pretty much universal and will work great on any network.   

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@pinkskull1224 wrote:
So are all AT&T phones unlocked too?

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No.  Verizon is the only US carrier not allowed to lock their postpaid phones.  All other carriers and Verizon prepaid phones are carrier locked with financial or service obligations. 

This is my issue with Apple.,  lack of user friendly settings , has to be activated thru their server to verify with the carrier (makes no since and my note 8 or s8 does not have this problem) , the icloud and lack of help if not the original owner ? Before you know it Apple will want a hair sample before activating your device lbs

@KcLinux   

Lol.  I’m with you.  No SIM card is needed to set up android.  I recently went through a lot of trouble setting up the iPhone for my mother.  So much for user friendly. 

Hi, guys when using a Verizon phone on att carrier will it get the same single strength? I got an att s8plus and got a steal on a note 8 with a owed bill which I'm using it for cricket just wondering if it gets some coverage since its gsm unlocked 

I'm having the same issue transferring my iPhone 6s from Sprint to AT&T for my mother. I have called Sprint and talked to them several times and they state that the phone has been unlocked and will now work on any carrier. However, when my mother called AT&T to get help activating the phone, they said it is still on Sprint. Is this a SIM card issue? When we insert the new AT&T SIM card, will it be able to work? Or are there other steps we need to go through?

@hbu935  Contact Apple and see if they have it unlocked or if a request was even made.

https://support.apple.com/en-us/HT201328