Fixing apps efficiently

[bikela]

I know that when an app doesn't work right u can do a number of things to get it working again: Powering down your phone, doing a hard reset, delete the app & re-download. Sometimes I even make sure I don't have anything else open on my phone. These can all be hit or miss but 1 usually works. What order should I go in to make my iphone less vulnerable to to malfunctioning?