SIM Card

How to Protect Your iMessages on a Stolen iPhone

Oliver Haslam ∙ December 22, 2011

Apple's iMessage may be a fine SMS/MMS tool, but as we recently reported, it isn't without its problems.

If you are unlucky enough to find your iPhone stolen or lost, then under some circumstances it is possible that the iPhone can continue receiving iMessages. Even moving your phone number to another handset, changing your Apple ID password, and remote wiping the handset may not stop the problem.

There are two possible fixes, and they are as simple as turning on your iPhone's SIM card PIN and calling your phone carrier...

Recent iPhone 4S 5.0.1 Update Was in Response to SIM Card Errors

Cody Lee ∙ December 17, 2011

Apple released a number of updates for its iOS products this week. It seeded the second beta for iOS 5.1 to developers, Apple TV 4.4.4, and a small iPhone 4S update.

The latter release was strange because it wasn't available to everyone (just those on iOS 5.0 or lower), and the version number didn't change. So, what was it for?

“No SIM Card” Error Plaguing Some iPhone 4S Users

Cody Lee ∙ November 18, 2011

Apple has had its hands full with iPhone 4S issues over the past month. There's been reports of poor battery performance (associated with iOS 5), audio echoing during phone calls, and connection issues with both Wi-Fi and 3G networks.

Now it appears that another problem with the device has surfaced in Apple's discussion boards. One support forum is filled with iPhone 4S users that are getting frequent "No SIM card installed" errors, rendering their smartphones practically useless...

Vooma’s Peel Case Gives Your iPhone a Second SIM Card

Cody Lee ∙ November 8, 2011

TechCrunch spotlights an interesting new case from the folks over at Vooma. The accessory adds a second SIM card slot to your iPhone. You might recognize some of Vooma's previous work, which includes other iDevice products like the iPod touch Peel 3G case.

We've seen cases like this before, which add a second line to the handset via an integrated SIM card slot. But this is the first time that we've seen one that is compatible with the new iPhone 4S. Don't get too excited though, as it does have one major caveat...

Travelers Will Want to Consider the iPhone 4S on Verizon or Sprint [Updated]

Oliver Haslam ∙ October 12, 2011

We already knew that the iPhone 4S was going to be the first world phone to come out of the Apple labs, and that meant that both GSM and CDMA handset flavors would roam on the networks of international carriers. This was good news, meaning that customers of both Verizon and Sprint could now take their handsets abroad and continue to use them.

Now, there's even better news for those customers, with Macworld discovering that they might actually have an advantage over AT&T (and all other GSM carriers across the planet), thanks to the unlocked SIM slot on the CDMA iPhone 4S...

Gevey SIM Unlocks iPhone 4 on iOS 4.3.4

Alex Heath ∙ Updated April 18, 2016

The Gevey SIM supports an unlock for the iPhone 4 on Apple's latest firmware, iOS 4.3.4. Apple recently pushed the 4.3.4 update to combat the exploit uncovered by the jailbreak tool, JailbreakMe, in iOS 4.3.3.

If you upgrade to iOS 4.3.4, you lose your untethered jailbreak. But the Gevey SIM still works...

T-Mobile Now Selling Micro SIM Cards for iPhone 4

Guest Author ∙ July 22, 2011

Rumors are that Apple will come out with an iPhone capable of running on T-Mobile's 3G/4G network, and today T-Mobile took the first steps in the Apple/T-Mobile partnership. T-Mobile is now giving free Micro SIM cards to its customers.

This news comes after T-Mobile announced they have over one million unlocked iPhones on their network. It has been over a month since Apple started selling unlocked iPhone 4s in the US that work on T-Mobile's EDGE network.

New Dual SIM Case Adds a Second Line to Your iPhone 4

Cody Lee ∙ Updated December 17, 2017

You might recall that earlier this year, there was a rumor going around that the next iPhone would feature dual SIM card slots. This would allow users to connect multiple phone lines to the device, eliminating the need to carry multiple phones.

While we haven't heard any follow-up information suggesting Apple's next smartphone will sport the dual SIM option, we have seen several accessory makers offer the feature for the current line of iPhones. The latest product we've seen surface, just like the Rebel 2Phone, adds a second SIM tray to your iPhone 4 via a removable case...

Unlock iPhone 4 on iOS 5 Beta 2 Using Gevey SIM

Guest Author ∙ Updated January 24, 2016

The Gevey SIM is an interposer tool that has been legally questionable by many. You might use a Gevey SIM to unlock your iPhone 4 and might have noticed that Apple has blocked the exploit in iOS 5 Beta 2.

Fortunately. the folks over at RedmondPie found a workaround to getting the Gevey SIM to work on iOS 5 Beta 2. In this method, we will show you how to unlock your iPhone 4 running iOS 5 beta 2 with a Gevey SIM...

Gevey SIM Blocked on iOS Beta 2

Alex Heath ∙ June 25, 2011

The Gevey SIM allows you to unlock your iPhone without the need of a jailbreak. The SIM card force activates the iPhone's baseband by exploiting the emergency dialer function.

Apple released iOS 5 Beta 2 last night, and it appears that the Gevey SIM is now blocked from working in this second iOS build. It's suspected that Gevey will try to battle Apple's patching of its interposer while iOS 5 is still in the beta testing stages.

Gevey SIM Will Unlock iPhone 4 on iOS 5

Alex Heath ∙ Updated January 24, 2016

Following the news that RedSn0w will jailbreak iOS 5, an unlock solution for the iPhone 4 on iOS 5 has also been uncovered. The Gevey SIM is a TurboSIM-like piggy back SIM card that will unlock iPhone 4 basebands.

On iOS 5, it appears that the Gevey SIM will still unlock the iPhone 4. Be warned: the Gevey SIM is technically illegal, so we do not recommend this method for unlocking the iPhone 4 on iOS 5.

Rumor: iPhone 4S This Summer With A5 Chip, 8MP Camera, GSM/CDMA Support, Integrated SIM

Alex Heath ∙ Updated January 24, 2016

With WWDC right around the corner, the last, pre-summer iPhone rumors are coming in fast and strong. The latest one seems a little far fetched, but it does make some interesting claims about hardware announcements we'll see from Apple this year.

Instead of an iPhone release this fall, Macotakara claims that the 'iPhone 4S' will be released this summer, and that the iPhone 5 will be released in spring of 2012. The iPhone 4S will supposedly be a minor upgrade from the iPhone 4 (like the 3G/3GS), while the iPhone 5 will be a complete revamp. Sound crazy to you?