adamheart

Hello, I have a HTC DIAMOND CDMA a second hand handset and when i had went to a reliance web world to swap my number in the HTC DIAMOND CDMA they asked me to provied a RSN or ESN number to remove the old number from the HTC DIAMOND CDMA handset to add my number, Now i'm not aware with stuff HOW TO FIND THE RSN or ESN so please do help for the same soon what will be the best way to clear this matter and start with the HTC DIAMOND