After the resent update(10.3.1) my phone shows lots of missing app mainly picture, video , file manager and music, and cannot set time for alarm; and it even shows latest update to 10.3.1 n I'm not able to install a message pops up stating "installation interrupted. Please help ASAP , now i'm using my phone just for calling purpose
download the OS to your PC, unzip it to your PC, cable your phone to your PC, close Link, and click the exe. It will load an OS to your phone. You need a complete OS with all the apps.
After the resent update(10.3.1) my phone shows lots of missing app mainly picture, video , file manager and music, and cannot set time for alarm; and it even shows latest update to 10.3.1 n I'm not able to install a message pops up stating "installation interrupted. Please help ASAP , now i'm using my phone just for calling purpose
The OS on the phone sounds like a DEV os. As Jaydee mentioned, redownload a correct OS and try installing that.