Back up issues
I recently upgraded from a iPhone 5 32mb to 6+ 64mb. And I moved from an iPad 32mb to a mini iPad 16mb. All the data moved fairly easily but neither new device will back up to iCloud. I have increased my iCloud capacity to 20 Gb.
Thinking that it was a bad back up I deleted the iPad back up's (there were two. One said T's iPad and the other said T's iPad(this device). The "this device" back up had zero data in it btw.
Still not backing up to iCloud. Plugging in to iTunes and it wants to back up to the PC. I have not deleted anything from the 6+.