Rear Camera

Question

Hi, I have a lot of trouble getting the rear camera to operate on my phone. Sometimes (very rarely) it will open but the image will be very jumpy and take a long time to focus. Most of the time it simply refuses to open at all. It is a brand new phone and it is still under warranty but I thought I'd ask before sending it for repairs... The front camera is very responsive and works perfectly.Thanks for any help you may be able to offer mePeta