Iphone 4s Invalid Sim Unlock. Best Dj Player Software. I now understand that Mrs Raney (Spokeswoman for Verizon) says that the company refused to comply with the terms of contract that have been changed for unlocked customers that they are allowed to use third party SIM cards. This allows you to settle on the slower EDGE network, which is convenient for email and easy browsing, but is out of the question for the music or video stream. A 4G connection is possible in some cities, including New York, Seattle, Las Vegas and Washington, DC, but the company refused to talk about network upgrade plans, which are expected to run next year. The next iPad and iPhone will be LTE devices. 12-13-2011 03:17 Likes 0 3,045 3cit So why not use Sim as memory expansion slot? 12-14-2011 03:08 0 72 CPUGEEK Originally posted by 3cit Verizon iPhone 4s has a SIM card slot. If you are an active member of the US military abroad, you may request a sprint unlock, although the same reservations (good status, Sprint account) still apply. That the carrier embraces brings your own device model is not new. It has been very successful with consumers who do not sign up for contracts with an existing phone. According to a note posted on its online store, Apple will offer an unlocked iPhone 4S, which is a version of the new iPhone unlocked in November with the wireless network of a particular operator. There is no evidence in this policy that it is only an international unlocking or that it can not use domestic SIMs. There is no evidence that you only use certain carriers. When I called Verizon to unlock it, they said that if I use it in Canada, the roaming standard on a CDMA network and you can not force it to use the GSM page, is it true? I read that you can buy a 128k SIM card and resolve the issue, but I would like confirmation or other tips or prison tricks that I could use to make my iPhone on Tmobile available.