Currently Being ModeratedFeb 5, 2014 4:19 PM (in response to king_z3ro)
If you want to merge the iCloud data from the other account with your current account, you can try saving any photo stream photos that you want to keep on your phone to the camera roll, then go to Settings>iCloud, tap Delete Account, provide the password when prompted and choose Delete from My iPhone (your data will still be in iCloud). Then sign into the old account to retrieve your data. Once it's on your phone, save any photo stream photos from the old account that you want to keep to the camera roll, then go to Settings>iCloud, tap Delete Account, provide the password and choose Keep on My iPhone. Then go to Settings>iCloud, sign into your new account again and choose Merge with iCloud.