Update: This only works until the TMSI is refreshed which means it won’t last very long
Michael Capozzi (via Chronic)has apparently discovered how to unlock the iPhone 4S (reportedly AT&T version only) without any software or hardware tweaking. The unlock will assist you in using your iPhone 4S on T-Mobile’s network as long as you have a T-Mobile SIM card. Before you get started, go ahead and cut down your T-Mobile SIM card to match your AT&T SIM card’s size. Go ahead and give the following directions a try:
Insert original carrier AT&T SIM card
Dial 611 for AT&T customer service hotline and drop the call
Turn on Airplane Mode
Take out AT&T SIM card
Insert T-Mobile SIM card
Update:the unlock also works with the iPhone 3GS and iPhone 4, and will need to be done again if you reset your device. Continue after the break..
“We have not yet got agreement with Apple,” Wang said on the fringes of the ITU World telecoms fair in Geneva. “Apple promised to provide, when they develop the iPhone for LTE, that it will include TD-LTE. We are discussing the details.”
There had been rumors that Apple would offer a TL-LTE version of the iPhone 4S earlier this year with China Mobile going as far as saying:
China Mobile and Apple hope to find a solution for close collaboration. We discussed this issue with Apple. We hope Apple will produce a new iPhone with TD-LTE. We have already got a positive answer from Apple.
It appears that positive answer wasn’t for this round of devices, though the CDMA Verizon iPhone arrived off schedule in January. TD-LTE will require some separate chips which could be hard to fit inside the iPhone 4S’s enclosure. Apple however has to look longingly at that 600 million+ subscriber base, however.
While T-Mobile USA is on the opposite end of the subscriber spectrum (China Mobile has around the same amount of subscribers as the populations of Europe and the US combined), T-Mobile is the #4 carrier in the US in the midst of AT&T attempting to swallow it.
But they both don’t officially offer the iPhone, yet have a significant number of iPhones floating around on their network. Both offer a different type of high speed 4G network that stock iPhone 4Ses can’t take advantage of. Both networks do offer EDGE/GSM speeds however which some may find valuable tied with reduced fees or better coverage. T-Mobile told us earlier this year that they had over a million iPhones on their network, a figure that is likely to go up with Apple sneakily offering iPhones 4S unlocked at launch.