Here it is:

Dear Gichingiri,

Thank you very much for your email requesting information about our product. This is Renee from TP-LINK technical support department.

I’m sorry that your 3G modem card is not in your region’s compatibility list, which means it has NOT been tested by our technician, so we are not sure whether your 3G modem card can work with our 3G Router or not. Now we can only try our best to help you check this out.

Firstly please check some basic settings on the router and make sure you’ve configured them right. See below:

1.    Upgrade Router’s firmware to the newest one on our official website.  Then reset it.

Please refer to the link to download the latest firmware.

http://www.tp-link.com/en/support/download/?model=TL-MR3220&version=V1#tbl_j

Please refer to the link to upgrade it.

http://www.tp-link.com/en/article/?id=296

2. Choose “3G only” as Internet Access.

3. On “3G” Page, choose your region and your ISP, then double check if the default parameters (such as APN and dial No. etc.) are correct. Contact your ISP for this information if necessary. To manually type in, please choose “Set the Dial Number and APN manually”.

4. Plug in your 3G modem card, restart the router. Wait for a minute or two. See if it can work normally and get on the Internet. 

If you need any further help, please feel free to let me know.

To get technical support more quickly, please go to http://www.tp-link.com/en/support/faq

Best Regards
---------------------------------------------

Renee Fu

Technical Support Engineer

TP-LINK TECHNOLOGIES CO., LTD.

Tel: +86 755-2650-4400

E-mail:renee.fu@tp-link.com