Well, I think at this case it's only Thor with the problem. Steve/Captain America obviously rode a motorcycle, so he should have knowledge on vehicles and phones, well phones existed around Captain's time, so depending on the phone he should be fine. If it's like a Iphone...he's going to burn an entire forest.
When he touches technology it starts to burst into flames. Avengers, your mission is to make sure he doesn't touch any technology, we can't build a technological prison, because he can easily break free.
And he is Captain America he can get out of a normal prison.
Now Avengers, GO.
Thor: Or we can keep the Captain in Tony's room. So he'll only destroy his room.