Sir when I open many apps it shows the app would'nt run without google play service which is missing from your phone So I tried many versions of google play service but I could not instal any from them it shows installing but at last always it shows application not instaled and android version is 4.0.4 unknown source in open I also tried to instal it from google play store but it shows insufficent space but I have space in my phone sir please help me...
The (non-google play) installs are failing because you have insufficient storage space.
You may think you have enough space, but due to the partitioning of your device, and because you can't fill it up completely, you don't.
I'm assuming you have an older version of google play services installed.
You need to delete some apps, simple solution.