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Chupa Chupa

macrumors G5
Original poster
Jul 16, 2002
I'm switching service to TMob tomorrow. First time I've switched carriers since 2007 so I'm a bit rusty. Is it as simple as having TMob port my phone number and leave it at that or do I need to call ATT and tell them sayonara? I'm not on contract and my phone is paid in full.


macrumors 6502a
Jul 28, 2015
Is your phone unlocked? If not, have AT&T unlock it before you switch. It's harder to get it unlocked after the switch. Use this web page to initiate the unlock:
If everything is in order, the unlock only takes a few minutes.

Once your phone is unlocked, let T-Mobile take care of the port. This automatically cancels your AT&T account. Do NOT call AT&T before the fact.


macrumors 68020
Sep 16, 2014
Dover, NH
No need to tell anyone, your number will be ported and that will cancel AT&T. Any ETF or device payment plan you may have will then show up on a final bill.


macrumors 68000
Jun 9, 2008
I may do the same and pay the 800 for my phone and use it in T-Mobile, att UDP even on grandfather plan is just not worth it anymore , 70 clean for unlimited and hotspot is great just hope the service holds up in NY and NJ


macrumors 65816
Jan 12, 2013
I just ported my number to TMobile from Verizon, it takes 24 hours to do it..No need to call ATT, TMobile will take care of it..


macrumors 65816
Jan 12, 2013
24 hours?? Online or in the store?

In my experience porting is almost instant in a corp store. 15 minutes tops. I've ported a few times...

I called TMobile..yea its was 24 hours, they told me 2 hours but it wasn't

From TMobile site:

How long will it take to transfer my phone number to T-Mobile?

Transferring your existing single phone number (wireless or landline) to T-Mobile number usually takes anywhere from 10 minutes to 24 hours. Transferring multiple – lines may take up to 10 days, however most requests are completed within six calendar days.

Overnight shipping is highly recommended to ensure your new phone arrives before service on your old phone stops. If you are not able to do this we recommend waiting to initiate the transfer of your phone number after you receive your new device.

Be sure to keep your old phone and old account until your number is fully activated on your new account for seamless service.

Note: Once your number has been transferred, you will receive a text message to confirm the transfer was completed.
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macrumors 6502
Jun 12, 2009
I just ported 4 lines from ATT to TMO. I first paid off the installment plans I had with ATT. Then requested the unlock for each device through ATT. The unlocks were completed within a couple hours from when I requested them. One of them was almost instant. I then went to a TMO store to open the account and port the lines over. The port happened instantly when the rep began the port process. The ATT service was ended and the phones displayed NO SERVICE before the rep was done with the transaction. Popped the new TMO sims in and we were off. Start to finish, this whole process took me a couple hours in the same day. After this was complete, I got on with ATT chat to close the account out. Had to do this as I still had an iPad line on the account.
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macrumors G3
Oct 18, 2011
I ported 2 Lines from AT&T to Verizon when the 7 came out and it was instantaneous upon activation. I think each carrier is different. They had us put the AT&T phone in airplane mode as well upon activation to allow smooth porting process.


macrumors 6502a
May 22, 2010
when I check my port status on Verizon it says: Your Old Service Provider has agreed to release your telephone number to Verizon Wireless. You should receive a free text message within the next 4 hours welcoming you to Verizon Wireless.

But it's been like this for over 24 hours...I haven't activated the new Verizon phone though, so I'm assuming once I activate the phone then the port will complete.

Is this right?
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