If you recently changed from Android to Apple, or you're just tired of the iPhone's own autocorrect, there is a simple way to add an Android-like autocorrect bar to your device. iPhone hacker Sonny Dickson discovered the feature hiding in iOS 5. It can be added to your iPhone 4, iPad and the iPhone 4S without a jailbreak.

The iPhone automatically corrects unfinished or misspelled words, but its limited word choices can lead to errors while typing. The keyboard autocorrect offers a number of word choices allowing you to choose the word you want. It's a helpful tool that keeps texting errors to a minimum.

Here's how to enable the autocorrect bar on your device:

Apple has made it clear that Siri will not be available on any other iOS devices besides the iPhone 4S. iFixit believes this has to due with the device's unique proximity sensor. The iFixit team discovered whenever the screen of the iPhone 4S is activated the proximity sensor turns on.

The proximity sensor in other iPhone models is basically an infrared LED light that lets the device know when a user's face is near the screen. This allows the iPhone to switch off its touch interface when someone is making a call. iFixit believes the sensor inside the iPhone 4S switches on constantly so users can easily access Siri.

Looking for a less expensive way to call overseas? AT&T now provides a solution in their own Call International iPhone app, available for free on the App Store. Calling from the US using the app requires no recurring monthly charge, contract commitment or prepaid balance. According to AT&T the rates offered when using Call International are their lowest available.

Contacts can be dialed directly from your iPhone Contacts list without entering any codes or PIN numbers to call. Calls are billed directly the credit card associated with your Call International account. This account can be set up directly within the Call International app on your iPhone. So what are the advantages of VoIP calling?

Apple has launched version 2.0 of the Apple Store app which now includes EasyPay and Personal Pickup. EasyPay allows you to pay for items through the app, rather than having to deal with long lines or sales reps. The new feature has been dubbed "EasyTheft" since it makes shoplifting a lot easier. EasyPay will only be available for smaller items like iPhone cases and other accessories. So you won't be walking out with a free laptop in the near future.

Personal Pickup also saves you time by allowing you to purchase items at a retail store while on the go. Items purchased on the app will be ready for pickup within an hour of the sale. This seems like a great time saver for business professionals. You can order an item while eating lunch, and pick it up on your way back to the office.

Basic commands to Siri are useful, but how can you take your personal assistant to the next level on the iPhone 4S? There are a variety of tips and tricks that will help Siri become more powerful and better at doing its job. Not only will these pointers speed up simple tasks, but they open up a whole new level of functionality with Siri.

Of course, you'll need a data connection for Siri to work properly. We've noticed that Siri drops in accuracy dramatically when background noise is present, so plan accordingly. If you're still using an older iOS device you may not have Siri, but you can try one of several Siri alternatives for the iPhone 4 and iPhone 3GS. Here's a list of 10 tips to get more out of Siri: