1)Test Network alert functionality 2)Test GPS alert functionality 3)Test Google map functionality 4)Test video play functionality 5)Test app exit dialog box appearance 6)Test Facebook and Google+ and other social media login flow integration,And It should not redirect on login screen again 7)Test loader appearance, And they should be consistent working format 8)Test UI and UX ,Atleast 320,480,600,900,768,1024,640 etc.do testing all available Android and IPhone devices.UI designs should be as per approved designs 9)Test google Analytics functionality 10)Test all filters functionality 11)Test internal search engine functionality 12)Test all calculations screens 13)Test Push Notification functionality 14)Test images are properly appears or not. They should not stretched. 15)Test hamburger menu appearance and other Animation effect on it 16)Test appearance of dialog boxes, alerts and it should be consistent throughout app 17)Test Geolocation functionality. 18)Test all play store and app store guidelines should be followed while developing app. 19)Test app into portrait and landscape View 20)Test update app functionality. All changes should reflect into app 21)Test iOS build on latest iOS devices 22)Test performance, UX , flow of project and functionalities are very important for every projects