Hi I purchased Sony Ericsson U10i Aino IMEI:356815030902929 on 26-Feb-2010. It used to hang frequently so I had to update it so as to get rid of the problem. Also, whenever I slided back my phone, the display vanished and it took 3-4 seconds to display the screen. Also, the flash was not working. I couldn't get to know from when this flash problem started because I had set its setting to automatic . It had Bluetooth headset which was to be charged individually and using it uses a lot of handset battery. Finally I made a complaint... read full review »