Don't Install iOS 9.0.2 If You Haven't Prepared
Apple's iOS 9.0.2 update, like iOS 9.0.1 before it, is a small update. But like we say all the time, even the smallest iOS updates can have a big impact on your device's performance. Positive and negative.
iOS 9.0.2 is small but you're going to want to be very careful with it. If you haven't done any preperation, you're going to want to hold off until you're able to clear some time to prepare yourself, and your device, for the upgrade. This is especially important if you're coming from iOS 8 or iOS 7.
We've put together a list of steps to take before installing the iOS 9.0.2 update. Some of you might be able to get this done in a few hours, others in a few days. There's no need to rush into iOS 9.0.2 unless you absolutely need the fixes it brings. Take your time.