Today I don't have a recharging cable,
In this day and age, how is it possible that you can't find or borrow a USB cable to charge your device? Everything uses them. They're everywhere. You can't even pass gas anymore without your foul air encountering several USB cables.
I use an iPhone 4
Ah. Nevermind.
we are all in the habit of just clicking past this screen and installing, and then hoping the app is not malevolent in some way.
Speak for yourself. If something doesn't look right about the permissions an app requires, I don't install it. If I wanted it badly enough I might contact the developer for clarification but so far there are enough apps out there that I've always just found another app that performs the same function without requesting whatever permission I thought was suspect.
There are two ways to write error-free programs; only the third one works.