Hi!
I have owned htc mogul for about less than a year.
From the beginning I have been having same problems with this model.
I have replaced this cellphone for three to four times.
Every time after a week it starts getting this white spot on lower left corner of the screen.
in about a month the cellphone starts running very slow and keeps freezing.
Being a student and having a tight schedule, I really need to use almost every features of the cellphone.
After replacing this phone last time, this time I talked to sprint and htc but they can not replace my phone for new model which is htc pro.
The cellphone cost was about 299$. Which proved to be basically a rip-off for me.