Greetings

i have a problem when i download an application or a game . . . etc.
The downloading corrupted some KB before, for example
when i download a game with size 130 KB, the download stops at 117
and when i transfer it to my mobile , it doesn't work, and it says something wrong with this JAR file.

I hope you could help me with this problem.
Thanks to your effort and best wishes to all staff.