Welcome to the forum.
I'm totally serious with the following. Tell him to make use of the home button. Learn it, use it often and if it gets too confusing and he gets it all wonked out, hold the sleep button until the red icon shows up, power it off, then back on.
I understand what it's like trying to teach an older man (my 82 year old dad) new technology. He got his first cell phone a few months before he died and kept getting stuck trying to use voicemail. Once he realized it was not broken and he could start over he got the hang of it much faster.
Hope that helps
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