【正文】 that allows iPad, iPhone and iPod Touch users to gain root access and unlock the operating system thus removing any limitations imposed upon them by Apple. Once jailbroken, iPhone users are able to download many extensions and themes previously unavailable through the App Store via installers such as Cydia. A jailbroken iPad, iPhone or iPod Touch is still able to use the App Store and iTunes [9]. And a ‘SIM lock’ is a capability built into GSM phones by mobile phone manufacturers. Network providers use this capability to restrict the use of these phones to specific countries and work , phones can be locked to accept only SIM cards based on the International Mobile Subscriber Identity. ‘SIM unlock’ make it possible to use a mobile phone without considering countries and works specified by mobile phone manufacturers. However in Android, Google doesn’t test every application at all, so although there’s an official market for Android applications, you can 河北大學 21012屆本科畢業(yè)生外文文獻翻譯 8 still release your product anywhere you want. Considering security problems, Google banned the use of some ponents. Like ‘jailbreak’ and ‘SIM unlock’ in iPhone, ‘root’ in Android gives users 100% control of their devices, along with some security risks. ‘Root’ is a process that allows users of cellphones running the Android operating system to attain privileged control (known as root access) within Android39。 most iPhone users are follower of Apple, they love the ‘closed platforms’ created by Steve Jobs. Both Android and iPhone have their unique IDE, SDK and other characteristics. Believe it or not, no perfection exists in the world, so none of today’s mobile platforms fully meets the needs of users and 河北大學 21012屆本科畢業(yè)生外文文獻翻譯 10 researchers. The choice of platform boils down to the needs of users and researchers, this article should make the decision easier. Of course the content of this article is time sensitive。智能手機 給 用戶帶來了極大方便， 并為 智能手機研究者創(chuàng)建了 機會。 較 電腦 CPU來說，手機 CPU性能差。 GPU得到更絢麗的視覺效果 。據(jù)谷歌和蘋果 的 公司精神，我們做上述各點的一些分析和比較，說明 Android的差異，從 iPhone淺向更深，然后得出結(jié)論開放式和封閉式的移動平臺的特點，目的是 為 移動平臺的研究人員提供客觀的參考，幫助他們 對 移動行業(yè) 有更清晰的認識 。 they publicized the whole source code of Android and Linux. The good point is that, platform owners can save a great amount of time and energy developing and maintaining the platform, because 3rd party developers will do this for them. With less money spent on development and maintenance, a relatively low price can attract more and more phone users. Contrarily, closed platforms lock their source code in the safety and forbid 3rd party accesses. Apple and Microsoft are the representatives of them, they are both closed sourced, but some differences do exists. 3rd party iPhone applications are restricted within narrow limits, for that Apple will look through every application which is uploaded onto ‘App Store’, and a lot of applications are turned don’t check Windows applications at all, it all depends on the users themselves. You installed the mareware, you suffer the loss. . Application Market Market is the medium between developers and users, hence it’s very 河北大學 21012屆本科畢業(yè)生外文文獻翻譯 7 important. Some predicted that there will be more and more application markets while some don’t think so. In current markets, both do exist. Some specify only one market for their products, while others sell their softwares in various markets. Softwares from Nokia, Microsoft and Linux Mobile are sold in every market. Developers of these platforms can release their own application in whatever markets, so markets have to pete with each other for a living. This is good for users. However, the lack of universal management may lead to mess and chaos, softwares that have the same functionality exist in different markets, which confuses users a lot. Correspondingly, sole markets claim that most applications should be sold in them. This kind of monopolization leads to no petitor. ‘App Store’ and ’Android Ma rket’ are deputy of sole markets. Normally, iPhone applications can only be found in ‘App Store’, and Apple will check every one of them by itself. Good news is that every application in ‘App Store’ is officially tested, it’s safe。 platforms will gradually meet the demands of consumers as new technologies emerging. References