My hubby just received a 2nd hand iphone 4 from his client. So i set the phone for his as new. I realised that there's something wrong with the Camera - shutter problem and find there's coloured lines (before taking a photo)...when take photo..the shutter doesn't re-open again. My hubby tried taking photo via whatsapp..it's find..just not fine with the direct camera app. I wonder if it's the ios.

I've tried hard reset...restoring as new phone the 2nd time..problem still persist. I wonder if it's the software prob. Later, I'll try to restore using the previous backup (from iPhone 3G, software version 4.X.X)..and see if the problem persist. If it does...then i think could be hardware problem.