The testing of a mobile application is a difficult task keeping in mind the diversity in mobile devices and the runtime environment. Also the need of resources to test a mobile application varies from mobile phones to tablet. At present there are tools which can simulate the mobile environment to test mobile applications. These stimulators simulate only the functionality of a particular operating system but not the processor cores, speed, memory, cache size of the mobile device. In order to overcome the above short comings we move to cloud testing. In cloud computing we can easily allocate the required resources using virtualization and also it is easy to scale up our resources anytime without affecting the entire system. The major advantage in cloud is that it is cost-effective. In this paper we define a cloud based mobile testing model which can test application for different mobile environments and platforms.