* phone calls app gets unresponsive (very rarely, but happens) * main camera sometimes (~50%) doesn't turn on (have to switch to front and back again) * GPS is slow and unreliable * the sd card only mounts every 2nd time booting the phone since 4.0 * it's the only device on my network, which doesn't get a new IP address on my home network after some time in standby. * bluetooth in my car (Renault) is a true PITA. On X at least the phone connection was reliable. ...to be continued... EDIT: * new camera pics sometimes don't show up (or are append to the end)