I had the same problem, but I solved it, my sister put a full size sim card without the tray, So the solution to this problem is : You use sewing needle, that you heat up with a lighter or candle, and you insert this needle in the stuck simcard as deep as you can, and wait 2 sec before trying to pull of the needle. You may have to try is a couple of times, but try to heat the needle a lot and handle with tweezer or something. That will definetely work, because that works perfectly for me, don't try to open the phone it's just a pain in the ass to reassemble it after.