If you have an Apple iOS device that didn’t come with iOS 7, and you’re considering the update, there are some things you should keep in mind before taking the leap:
It is not possible to undo this update.
Ensure that iOS 7 is permitted for use at work if you do use it in that capacity at all. If your workplace IT has’t tested and approved it for use, and you really do need it for work purposes – even if it’s “just email” – then I recommend you don’t take the risk because you’ll be on your own if you find out after the fact that there’s a problem.
Keep in mind that iOS 6 has obtained FIPS 140-2 validation, iOS 7 has not – not yet, and it could take some time.
If this is a requirement for you, stop now and wait.
If you do go ahead: Backup your device via iTunes first.
I also recommend that you do a full power-cycle of the device prior to applying the update. Hold down the power button until a message and the slider for doing a full shutdown appears. Wait a few seconds and then use the power button to turn it back on.
There are a great many changes and some new features in iOS 7, I recommend having a read at
I’m using iOS 7 without issue and so far enjoying it very much !