Unlocking SIM for ATT 4s
 

I just spotted this puppy on E-Bay:

http://www.ebay.com/itm/New-GPP-R-SI...06958384181198

Interesting. I wonder how it works.

Being it ONLY works with AT&T and a specific set of iOS rev`s I'd say its a re-brand or a remake of the gevey sim.

On a Gevey SIM, you have to start and abort a 112 call to get the foreign SIM to boot. This SIM doesn't require this. There was a device being sold by a UK firm that this reminds me more of. It, however, worked with every SIM.

The point of "only ATT"
 

The other networks in the US that sell iphones are CDMA, he mentions that it won't work with Verizon and Sprint. Should work on all GSM only units with those firmwares?

If it is a "clone" of the Gevey SIM it won't work on all basebands i.e. it won't work on baseband 04.11.08

Even a narrower set of requirements.

Can't wait to get my hands on the iphone 4gs ;)

The iPhone 4s is GSM/CDMA somewhat of a 'WorldPhone' Verizon will enable the GSM side upon request for travel OUTSIDE of the US. I suspect Sprint would do the same. From what I understand the VzW phone knows its 'home' and will NOT allow/use the GSM stuff when its in the US.

It's more than somewhat of a world phone. It is one.

Your description is pretty much correct. Sprint does the same thing.

Both Verizon and Sprint will unlock the phone to work with foreign SIMs on request. But it's not a full unlock - the phone will still only work with Verizon or Sprint in the US.

Has anyone tried the Gevey unlocking thing first-hand? The latest version doesn't require calling 112 and sounds like a dream come true, but their site isn't very consumer-friendly. (It makes it sound like you have to "jailbreak" your phone, which is something I specifically do not want to do since it would void my warranty, ability to upgrade, etc. Gevey assured me on the phone today that I don't need to do any kind of jailbreak to use their product, however.)

I'm traveling to Hong Kong, Singapore and Vietnam, and my working plan is to take my iPhone 4S, buy one of these Gevey things, and then just buy a new data-only SIM (typically very cheap!!) in each of those countries.

I'm told by Gevey that I need to "reset" the Gevey device (using a special "reset SIM" they give you with it) between each SIM, and I'm also told that when I get back home, I can pop my original AT&T SIM back into the phone and it's as if I never did anything.

Can anyone confirm that this Gevey thing works? It's clearly a hack but a pretty brilliant one if it will work as I've outlined above.

I would also be interested in using one in a 3GS or an iPhone 4 ,
Plus do you need to re-install if your battery goes dead ?

Thanks for the advise

Soarer

Hi Soarer, I think they sell one that works for the iPhone 4. I don't know about the 3GS. Can't speak to the battery issue but I would guess you don't have to worry about it (in the same way that if you battery goes dead now, you don't have to worry about "resetting" the SIM card when it's charged again).

I'd love to hear from anyone who has actually used the thing and might be able to address both your questions and mine.

Just keep in mind that the Gevey SIM is not compatible with later versions of the baseband. [settings>>about>modem firmware]

Unlocking SIM for ATT 4s
 

You may want to check this service instead for permanent unlock , http://www.officialiphoneunlock.co.uk/att-iphone-unlock.php

It costs £45 but you got factory unlock.