Ah, understood. I made an assumption. My bad. Other than a case holding in heat (if you're using one) it sounds like that's the nature of the betas. I expect to get jumped on for this next statement but I remember back when I had access to the developer portal I saw a statement from Apple that running Betas could damage your phone. Yes, I know they shut down at a certain temperature. But remember, betas are version where they know stuff doesn't work and one of them might be the thermal protection. I won't argue this point because I can't reference it anymore.