Siri

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:

Some of you may be wondering if Siri is too good to be true. After all, the technology offers to solve many of your problems via real-time speech interaction. Voice dictation of texts and search parameters is convenient, but at what price? Battery power is not the only thing sacrificed using Siri on the iPhone 4S, that is unless you check your security settings.

Turns out that Siri (much like Voice Control before its time) can access a whole range of functions without ever entering the passcode lock number that protects your iPhone. Reports have indicated that Siri is capable of changing calendar appointments, writing text messages and sending emails, all without ever entering the passcode that normally protects your iPhone 4S.

The mystery as to why Siri is exclusive to the iPhone 4S just got a little more interesting. 9to5Mac ported the voice command system from the iPhone 4S to the iPhone 4. In the video below, developer Steven Troughton-Smith demonstrates how Siri looks on the device.

9to5 claims it can recognize spoken commands and speak back to the user. The only problem is Apple's servers are not authenticating commands from the iPhone 4 hardware. Apple fans have been debating whether other iOS devices like the iPad 2 can handle Siri's AI. 9to5's discovery proves there are no technical reasons for Siri being exclusive to the iPhone 4S.

New and existing Sprint customers can pre-order the iPhone 4 with iOS 5 for $99 starting on Thursday. The iPhone 4S can be pre-ordered at 12:01 AM PST (3:01 EST) on Friday via their online store. AT&T or Verizon customers can visit Apple’s website or call 1-800-MY-APPLE to order the iPhone 4S tomorrow.

The iPhone 4S features Apple's dual-core A5 processor, 8-megapixel camera, 1080p HD resolution video recording, iCloud and Apple's new voice command assistant Siri. The iPhone 4S is $199.99 for the 16GB model, $299.99 for the 32GB model and $399.99 for the 64GB model. All prices require a new or upgraded contract.