San Te wrote:
Does this device also unlock the iPhone 4? Do you need an unlocked iPhone to use it? My iPhone is a US version which is obviously locked to AT&T. I had to unlock mine with a Gevey Sim. I understand you not being able to cut some SIMs as the cutter doesn't appear to be adjustable. Luckily, the Kolbi ICE sim was able to be cut for my iPhone.
No it does not circumvent security of any type. The solution assumes that the phone is already unlocked.
I ran the Redsn0w jailbreak on my phone to unlock it. However, there are some major drawbacks.
First you Apple claims that this will violate the warranty. However, you can always reset your phone via itunes. But, if this is not an option you might have issues with AT&T or Verizon. I suspect you will have less resitance in the Apple Store with their typical can do attitude but it still is a risk.
Second is when a new version of IOS software is released for the phone you need to wait before upgrading. Upgrading will always set the new IOS operating system without the unlock or the jailbreak. You need to wait until the jailbreak exists before upgrading again.
While 10% of iPhones do have a jailbreak it does require some savvy. In my opinion the benefits far out weigh the risks. My phone does everything I would want it to do that apple or AT&T would block for financial gain. I recommend research.
I use to travel with an iPhone 4 clone. But, as others pointed out I already paid a lot of money for the original. The original with a jailbreak provides huge benefits while traveling. One small example is that for around $3.00 USD per month ti skype gives me unlimited calling to the United States over WiFi (I think the vonage app may do the same for free). For a few dollars more per month I also get a US phone number to receive calls and takes a message when I am not available.
With the dual sim modification I am locally available before my luggage is on the belt in Costa Rica.
One other tip I will give you is that once you have a sim card (for any phone) it expires in 60 days unless you put money on it. If you travel to SJO regularly then I would PM Orange for instructions to renew it online for pennies a month. Unless he has already posted it. Orange knows a lot more than he posts about SJO for the tourist.
I could go on and on about the benefits but, I think everyone needs to evaluate that for themselves. It is not for everyone.
=xp=
Unfortunately, my iPhone is un-lockable via software as Apple has patched all the Dev Team's exploits. It doesn't look too good either for the future of being able to unlock the iPhone 4. The only iPhone 4s which are unlockable are those on the first baseband which was 1.59.00. The baseband can be found under Settings, General, About down toward the bottom labeled as Modem Firmware. The iPhone 4 is nearly a year old now and up to baseband 04.10.01 which can not be unlocked. Similar problems exist for iPhone 3g and 3gs.
You used Redsn0w? I think you mean Ultrasn0w. You must stay away from Redsn0w if you intend to unlock your iPhone. It is fine to use RedsnOw if you just want to jailbreak. However, if you need to unlock it then you must use Pwnage for the Mac or Sn0wbreeze for the PC so the unlockable baseband is preserved. If the iPhone is already upgraded to an unlockable baseband,like most, you need to use other methods. I used the Gevey but was hoping the dual sim device you mentioned also unlocked. Oh well, I guess I am stuck with the Gevey method. Hopefully in a few months when iPhone 5 is released they will offer factory unlocks since Verizon now has the phone and AT&T is buying T-mobile.
As to the CR sim yeah I keep putting money on it every month but the site is currently down and my 30 days is quickly approaching. That sim has be cut down for the iPhone 4 so I will have problems because I think the airport only carries the regular sims.