[Q] SIM Card problem on 7300

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Hello
A few days ago I bought Galaxy Tab 8.9. The tablet works great except one problem. The device does not see my SIM card. No matter if my SIM is in or out when I try to enter Settings --> Mobile Network i receive this message: Insert SIM card to access network services
The device was bought from other (not my) provider (I bought it from second hand). Is it possible that the device is locked for other SIM card ? I don't believe it's locked because providers in Israel do not suppose to lock any devices, but any way how can I check this?
And if it is not locked how can i fix this problem?
My device info is:
Model number: GT-P7300
Android version: 3.2
Baseband version: P7300XXKHC
Kernel version: 2.6.36.3 root@DELL133 #1 SMP PREEMPT Tue Nov 8 09:34:49 KST 2011
Build number: HTJ85B P7300JHKK3
The device is not rooted and i still didn't change the CMR...

did you try reverse the sim card?

or put it back to normal phone still works?

Sent from my GT-I9100 using XDA

Yes, I tried to put it in any posible way...
And yes, its my SIM card which normaly work in my cellphone (Samsung Galaxy S), and it work for phone calls and mobile data.

[QUOTE=Dreamswalker;23263633]Hello
. Isit possible that the device is locked for other SIM card ? I don't believe it's locked because providers in Israel do not suppose to lock any devices, but any way how can I check this?

Yes; it is possible via android paramaters with this tab

Hi everyone

The problem is solved. I don't really know how, but it works now. Maybe I didn't put the SIM card right before.
Thank you all for your tips

Sent from my GT-P7300 using XDA