Fix Fault Samsung M8800

my m8800 will not stay turned off, if you turn it off it turns itself back on. can you help me with this problem please

keep getting blue ring around screen and text of reboot 5.43 i think. had it up and running and i went to charge it up again, it died on me again. can you help

hiya i bought a phone off ebay the other day and when i 1st got it,it worked and then all of a sudden it froze,switched itself off and then when i switched it on it wouldnt work any further than the w ... more

i want to change the screen on a pixon m8800,have a replacement screen but want to now change it,any ideas where to start as i dont want to damage the phone

phone stay on will not turn off.