Have just replaced the Face screen on LG KU990i Veiwty Mobile which was quite straight forward. However when I came to switch back on phone lit up very dim & with nothing on screen for about 30seconds then switched off. Suspecting a very flat battery I have plugged in the charger to enable me to use the phone as this has worked on all my other mobiles but to no avail. Does this phone not allow you to use it whilst charging or is it that I may have a duff new screen? I have rechecked all the connections inside the phone which are all sub-minature snap fits and of different sizes so cannot be placed wrongly. Any advice would be appreciated.