How to Tell Which Model an iPhone Is
Though most iPhone owners know what which model they have, not everyone does, and sometimes you’ll come across an iPhone and have no idea what it is. This is usually because some iPhone models share the same enclosure, and because of that it can be very hard to differentiate them just by a first glance. For example, the iPhone 4 and iPhone 4S look almost identical, the iPhone 3G and 3GS also look practically identical, and the iPhone 5 and it’s successor (5S?) are also likely to look basically the same. Thus, the easiest way to differentiate an iPhone when it’s not immediately obvious is by looking at the actual iPhone model number, then comparing that to a list of devices to determine what the iPhone actually is.


Ever needed to quickly mirror a Mac display, switching another screen from an extended desktop to the mirrored image of what’s on the primary screen? Sure, you can visit the System Preference Display panel and fumble around in settings, but there is a much easier and faster way to toggle display mirroring with just a simple keyboard shortcut.
iOS devices can use an optional 

The iPhone is easily one of the best pieces of technology ever invented, but let’s just go ahead and admit that nothing is perfect. There are a few default settings on the iPhone that are just plain annoying, but within just a minute or two you can fix all of that with a handful of simple adjustments, and have a much better experience.
Certain situations require a Mac to be booted from an external boot volume, rather than the primary startup disk. There are plenty of reasons for booting from external volumes, whether it’s to troubleshoot problems, repair disks, 

Unlocking an iPhone through AT&T is now lightning fast, and in some cases you’ll have an unlocked iPhone in under 30 minutes. I recently had the chance to experience this directly while writing 
A new update to Apple TV brings streaming access to several popular TV services and networks, including HBO GO, ESPN, Sky News, Qello, and CrunchyRoll. Versioned as 5.3, the update requires a second or third generation Apple TV, and can be downloaded through iTunes or by using the direct firmware links included in this article.

An unlocked iPhone means it can use any cellular network, so long as you have a compatible carrier SIM card. Due to this, unlocked iPhones are more valuable and highly desired for both local and international users, because it allows you to use any GSM carrier whether at home or abroad just by swapping out SIM cards. But how do you know if an iPhone is unlocked or not? You usually can’t tell just by looking at it, but we’ll show you how to find out if the device is factory unlocked or not using one of three methods. If you plan on doing some international travel, you’ll want to check before you leave. Similarly, if you plan on buying or selling an iPhone, you’ll want to check if its unlocked or not before completing the transaction.