“You’ve been using iOS for ages and think you know what you’re doing, but do you?” Jonny Evans writes for Computerworld. “These common iOS mistakes make you look dumb, so here’s how to avoid them.”
“Some users have claimed their iOS device runs slower since they installed iOS 8,” Evans writes. “They moan about it so much you know that some of those complaining probably don’t even use iOS!! It’s funny – but all these complainers are pretty dumb, unless they’ve at least tried this fix: Open Settings>General, select ‘Reset’ and then choose ‘Reset All Settings.’ This won’t delete anything (bar your WiFi password) but might help mitigate performance problems.”
More useful iOS 8 troubleshooting tips in the full article here.