AT&T, Basic Data Connect 200MB $35.00 monthly, Data Connect 5GB $60.00 monthly, Data Connect 3GB Hotspot $35.00, http://bit.ly/gcJz4
Sprint, Unlimited Data & Messages & Minutes $99.99, 900 Minutes & Unlimited message data $89.99, 450 Minutes & Unlimited Message & Data $69.99, http://bit.ly/hogUuH
T-Mobile, 200 MB-$29.99, 5 GB-$49.99, 10 GB $84.99, http://bit.ly/h457RN
Verizon, $29.99/Unlimited, Requires a data package, 10-75MB, http://bit.ly/hdcst10
Cricket, Basic Usage Level-2.5 GB at best speed download speed upto 1.4mbps, Premium-Usage level 7.5 GB @ best speed download speed up to 1.4, http://engt.co/bfW4MW
Android™ delivers a complete set of software for mobile devices: an operating system, middleware and key mobile applications. available.http://www.android.com/about
The operating system used by BlackBerry devices is a proprietary multitasking environment developed by RIM. The operating system is designed for use of input devices such as the track wheel, track ball, and track pad. The OS provides support for Java MIDP 1.0 and WAP 1.2. Previous versions allowed wireless synchronization with Microsoft Exchange Server e-mail and calendar, as well as with Lotus Domino e-mail. The current OS 5.0 provides a subset of MIDP 2.0, and allows complete wireless activation and synchronization with Exchange e-mail, calendar, tasks, notes and contacts, and adds support for Novell GroupWise and Lotus Notes. Blackberry Torch features Blackberry 6.
iOS (known as iPhone OS prior to June 2010) is Apple's mobile operating system. Originally developed for the iPhone, it has since been extended to support other Apple devices such as the iPod touch, iPad and Apple TV. Apple does not license iOS for installation on third-party hardware. As of January 14, 2011, Apple's App Store contains more than 300,000 iOS applications, which have collectively been downloaded more than 10 billion times.
Symbian has a microkernel architecture, which means that the minimum necessary is within the kernel to maximise robustness, availability and responsiveness. It contains a scheduler, memory management and device drivers, but other services like networking, telephony and filesystem support are placed in the OS Services Layer or the Base Services Layer. The inclusion of device drivers means the kernel is not a true microkernel. The EKA2 real-time kernel, which has been termed a nanokernel, contains only the most basic primitives and requires an extended kernel to implement any other abstractions.