Every year millions of Apple users install the latest iOS upgrade and some find it impacts the performance of their iPhone, iPad or iPod touch. That’s no problem for those who know what to do, but horrid for those who don’t. If that’s you, or someone you know, here are a few tips to get the old performance mojo back, no anxiety required.

The scenario: You installed iOS 8 (not iOS 8.0.1), and your device seems to have become buggy. Safari might be slow, apps may take ages to load, that kind of thing…

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