What do the numbers on a SIM card mean?

Once the SIM card is removed from the iPhone, you can see numbers stamped on one side of the SIM card, opposite the metal contacts. These numbers contain various information about the wireless carrier and your account.

Up to 22 digits can make up this Integrated Circuit Card Identifier (ICCID). The ICCID is made up of several individual parts. For example, on an AT&T Mobility SIM card the first seven digits are the Issuer Identification Number (IIN):

Which airlines allow electronic device usage under 10,000 feet?

Ever since the FAA has changed the rules around use of personal electronics such as iPhones, iPads and iPod touch devices, airlines have been lining up for approval from the agency. After approval, these devices can be used by passengers at all stages of flight in Airplane Mode. Previously, iPhones and the like were to be switched off until reaching an altitude of 10,000 feet.

So which airlines have gained approval from the FAA to change the rules? Here's the list:

How can I rename my iPhone?

Looking to change the name of your iPhone to something more original than "iPhone"? There are two ways to change the name of your iPhone. You can change the iPhone name without a computer, or by using iTunes. Here are instructions for each:

- On the iPhone, navigate to Settings -> General -> About -> Name. Enter the new name in the Name field. Tap the Done button.

How can I opt out of Apple diagnostics / Carrier IQ on the iPhone?

First off, Apple has issued a statement regarding the controversial Carrier IQ software. iOS 5 devices do not run the Carrier IQ software package (IQRD) and Apple will be completely removing all references to the software in a future update. Even without Carrier IQ, the iPhone can still send diagnostic and usage data to Apple daily to help Apple improve its products.

opt out iOS diagnostics Carrier IQ


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