iCloud back up

[Markyboy81]

Each night I have my iPhone plugged into the mains to charge, so I'm guessing this is the time that the iCloud back up occurs. Does anybody know whether iCloud first checks for any changes or does it simply re-upload everything. If that's the case then it's quite a hefty amount of data off my allowance each night!

 

[S.B.G]

Wirelessly posted (iPhone 4S: Mozilla/5.0 (iPhone; CPU iPhone OS 5_0_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A405 Safari/7534.48.3)

I don't know for sure, but I would guess it's incremental. It would be too bandwidth intensive for ISP's if all iCloud backups were full backups.

 

[damarsh]

I think it's incremental but could be wrong. Mine sometimes fails to be honest. Also the upload affects my Xbox live so I tend not to do both at the same time

 

[Feed Me]

Yeah, iCloud only backs up the changes - it's called delta backups.
Just like OTA software updates are known as delta updates because they only update what's been changed.
iCloud also only backs up when your device is connected to WiFi, it doesn't use your cellular data allowance.

 

[verwon]

You can also see when it backs up, under settings, iCloud, back up.