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Hi :) I have afsked about this before without any help so Im tryin again.. I have an Iphone 6s plus.. It Works fine and i Can use it whole Day.. But when i put a sim card in it, its shuts Down?? Sometimes in a minute, some times after 30 min.. It different.. Without sim card, it Works fine.. I bought the phone from a guy who has replaced the screen on it.. Can you say What it Maybe could be? Sim card reader? Antenna faulty? Dont know How important it is But the touch id does not work eighter.. Thanks:)

That’s odd, there is no other question in your profile regarding SIM cards. Have you tried using a different or new SIM card? The other possibility is that there are bent pins inside the SIM card reader and could be causing a short. Open up your phone and inspect the reader.