[benz4life]

I have a 6700 with wm6.1 installed. The problem i'm having now is my phone is locking up constantly, if i reset it will work fine for maybe 5-10 minute then it locks up again. Also when im typing a text message the letter will not show in my message. Help please. If i reinstall wm6.1 how to i backup my contact dont want to lose them at all. Somebody anybody please