Hi there,

I got an Acer Iconia a501 with 3G and WiFi, I just upgraded it to 4.0.3 over the air, but then I got problem with the mobile data. The data is disabled when screen goes blank and sleep, the mobile data in settings disappeared so I couldn't re-enable it, toggle airplane mode doesn't fix that, the only way to fix is power reset the tablet, even so, data still not activate some time after power reset, and I don't have any power saver installed, any idea ?