These are things I have noticed that are very different from what I experienced on my old 1st gen.
Waving all the time.
I know I saw a post about this once (maybe concerning iPad?) but I can't find it. For some reason my character uses the Wave emote all the time for no reason. Yes, I know shaking the device sets it off, but I'm not doing that, and I never saw a single unintentional wave on my old iPod.
Rotate view locked
Again, I know I saw this reported before (also maybe for iPad), but a couple of times I have not been able to rotate the map onscreen. Going into the menu and coming back, fixes it.
Tiny offscreen player markers
The little squares at the edge of the screen that tell you which direction your teammates are are really tiny on the 4th gen. It takes forever to find them at times. They were much larger and easier to see on the old iPod.
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