Philips S309 has display Size 4.0", operating system Android 5.1. The device has ram 1 GB too, card support is microSD, up to 32 GB (dedicated slot), it has 8 GB, 1 GB RAM hard disk. Back camera 5 MP is awesome, front camera VGA is also not bad. S309 has power storage, Up to 9 h 30 min (3G). Device status is Available