Nothing happens after inserting sim card

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I just got a tmobile galaxy tab and when I insert the sim card in the slot, nothing happens. I heard it is supposed to reboot and then I will have a signal but right now it doesn't reboot and doesn't show signal.
I tried powering off and on but I still get just a circle with a line across on the top bar instead of a signal.

Is there something wrong with my sim slot?

hi
check if you inserted the sim card the correct way.
on my tab the mini symbol on the sim card slot doesnt equal the way the sim card should be inserted.
check the manual for correct instructions :)

edit:
i had the same problem at first.
inserted sim, nothing happend, turned it around nothing happend, looked in the manual, inserted it like pictured, and the tab rebootet and it works.
i dont remember how it should be inserted, and i cant look right now. sorry.

(excuse my bad english)

Same here. It lets you think you have put it in the correct way but if nothing is happening, chances are you have not got it in right. Flip it 180 degrees and push it in with you finger nail. The tab will detect it.

I did research to see how to insert and I have inserted it correctly (numbers and logo on top, gold contact on the bottom)

but nothing happens, it doesn't reboot, it doesn't show signal. The "mobile networks" in the Settings menu is greyed out.

I am going crazy here. What am I doing wrong?

Originally Posted by bigneeker

numbers and logo on top, gold contact on the bottom

did you inserted it with the "bigger" or "smaller"(the one where the corner is cut) side first? ( sorry but i dont know how to describe it ;)

i checked mine, you got to insert it whith the chip facing down, and the "smaller"(cutted) side first.

hope it helps!

yes I did that. I inserted with the cut piece first and gold contacts on bottom. It is the only way to insert it and fully go inside.