Wakuu vipi mimi nina samsung Gt-S7580 nikitaka kudownload games inadownload mpaka 100% then katika install inaandika could'nt install on usb or sd card so cjui tatizo linaweza likawa wapi wakuu
This problem is caused by Package Instaler unabled to read/write mmc.
Go to settings Apps Playstore clear Data ,Clear Cache. Reboot en try downloading again...
If the problem persists try using a different memcard...