iCloud backup fails on iOS 6 Have recently noticed my ios6 running iPhone hasn't done an iCloud backup since November. Could there be a new icloud api that would prevent ios6 devices from backing up properly? It appears to fail even when started manually. With no particular error message of course.
Did anyone have a similar problem?
Maybe someone can tell me the icloud log location? I've only found a preference plist with 
BackStateInfo - error, code 1, domain MBEroorDomain, localizedDescription "Service crashed".
The backup fails on a different network as well.
That's the kind of thing software updates typically fix. Since it's an iPhone 5, you could try updating to iOS 8.4.1 today, or wait until iOS 9.0 launches in a couple of weeks. Just go to Settings->General->Software Update. I can't guarantee that updating will solve your problem, but you should update anyway for many reasons: new and better design, new features, bug fixes, security updates, and many other things.