Many analysts say the iMessage application in the iOS which Apple is to release would undermine the operator's high-profit SMS. As part of iOS 5, iMessage provides a free unlimited information services for WiFi or 3G network in the iPhone, iPad and iPod Touch.

SMS services' annual revenues in the United States exceed several billion, the operator allows users to send SMS within 160 characters. And each time you send and receive text messages cost 20 cents. iPad tip: convert dvd to ipad. When the amount of data sent by the user reaches 1MB, basically, it costs 1500 dollars. If the user selects 25 dollars per month's 2GB set, then 1MB data amount costs only 1.25 cents.

According to Stanford Research Institute Craig Moffett, currently there are two trillion messages issued per year in the United States. This Means that operators receive annual revenue of up to 200 billion dollars from SMS, while only Verizon's SMS revenue has exceeded 7 billion dollars.

AT & T currently offers two packages, 20 dollars per month's unlimited SMS package, or the package charges 20 cents when sending or receiving per SMS. Although Apple's iOS equipment accounts for 5% of the SMS traffic. But the analyst Chetan Sharma said, as iMessage only applies to iOS devices, so users may also choose SMS packages.

So how does iMessage work? First, iMessage is part of the iOS 5, the devices which support iOS 5 are iPhone 3GS, iPhone 4, iPad, iPad 2, the third and fourth generation of iPod Touch. iPad resource: rip dvd to ipad. iMessage will be published in this year's WWDC, there were reports said that Apple's carrier partners do not know Apple prepares to launch such a service.

iMessage application will make it more cheap for communications between iOS devices, in some circumstances, iMessage only need 3G networks to work. the service is very attractive for SMS fans, because users can use the service free of charge to chat with other relatives.

iMessage doesn't limit the length of the message to within 160 characters, and users can also send photos, videos, location and contact information through iMessage, all the information sent and received will be encrypted. Apple related: video to ipad converter. The codes recently found in Apple's iChat application shows that Apple is likely to bring this service into the Mac OS X.