Is your Samsung Galaxy Tab locked with any particular network?If so..when you insert other networks sim..it will show error messages like network error/invalid sim etc.I suggest you can approach your network provider and get the unlock code for your device.You can follow the free unlock instructions from Mobileunlockguide.com and enter the unlock code easily.This way you can unlock the device very easily.
SOURCE: Samsung tablet isn't connecting to
Hi,
Go to Settings, Data Connections, Mobile APN and press Menu.
Then choose, reset to defaults.
It will take a minute or so, but after that 3G should ve enabled once again.
Hope i was of any help. If so, please rate me.
Thank you,
PcSimples
SOURCE: i cannot connect my samsung
If connecting the Tab to the computer with the cable and then correctly mounting the SD Card through Android (tap notification, follow steps) does not work, try a third-party app like On Air to connect over-the-air.
Hope this helps,
Alistair
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