hi, i am using an xperia z1 running on kitkat 4.4.2. Recently i did a factory reset of my phone after which any game obb files are no longer working. the games still show its full size memories in the storage option, but as soon as i open any game, it tells me i need to download the files again. i have tried reinstalling the games and reformatting the phone but still not helping. The obb files keep occupying its space on the internal storage even after i uninstall the games, but i am unable to detect it, or even delete it. i am suspecting it to be a software bug... so has anyone experienced any such problem?? if anyone knows what this issue is about, plz help!