[Q] tab 2 10.1 Sim card. not reading it ? - Galaxy Tab 2 Q&A, Help & Troubleshooting

I have been using my tab 2 on 3g for 3 months and today ..error message saying insert sim card?
Sim card is inserted, took it out cleaned it with a dry clean cloth, re booted, inserted still saying No sim card inserted?
Tried it several times rebooting but still not reading the sim card?
Help

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[Q] Samsung Galaxy S I9000 SIM card slot damaged?

Hi,
My Samsung Galaxy S I9000M (Canadian version, but pretty much same as I9000) all of a certain won't recognize the SIM card.
I've read pretty much every post here and on google wrt SIM card not being recognized, tried factory reset, flashed many different ROMs/modems and no luck.
I'm suspicious that the SIM card slot is damaged, as other SIM cards were also not recognized by the phone. Its possible, since I use a micro SIM card adaptor to fit in a micro SIM card into the regular sized slot.
Before I take it to a store, I'd like to ask one of you kind souls to compare the pic of my SIM card slot to your phone and see if there is a gold pin in the middle thats missing on my phone. I see 5 gold pins with no gold pin in the middle at the top of the slot -- should there be one there? (i.e. should there be six pins?)
Thank you so much in advance. I've spend over a week on this so far.
Just to update in case anyone else had the same question:
Yes, there was a pin missing, and the whole SIM card tray had to be replaced.

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