3GS-battery in a 3G - never opened before.
I opened an iPhone 3G to check what was wrong with it. It was regularely turning itself off, even when fully charged.
When I opened it, the "Do Not Remove"-sticker was intact. I removed it, together with the mainboard, to see this:
"616-0347" - which is a 3GS battery. Inside a 3G iPhone? Which supposedly has never been opened before? What is the deal here?
I have now changed the battery to a 3G one ("616-0366"), and hope the problem is solved.