Summary: Did nothing just shows that there is a sim card in it , If you have a sim card from a recognise network then this won't work on tp dongle I can't see it working on O2 or EE network. It looks to me like a fake, don't buy!
Summary: Great unit. Unlocked. Works fine with O2 and 3. Unfortunately the 1st unit failed. It would not detect a SIM installed. Amazon returns process gave me a replacement in a couple of days. The new one was fine.
Summary: I bought this to use with my router as fall-back for my broadband and for my laptop when out and about. I could not get it to work on either box and it was too late to send it back. Steer clear of this.
Summary: Needed this for a TV. Was initially suprised at the size but it soon became obvious it was fit for purpose, easy to set up and use and as a bonus looks good. I was aware that no power cable was supplied so had already made plans (using a cable from a redundant router). Good product for the price.
Summary: It is not working in the countries i do visit, I don't think it is TP-Link problem but I think there is special products for the ISP's in the Countries I do visit so I do have to buy a local version in each country, have 14 until now.
Summary: Genius idea for a mobile system. Works fine with Win 7. If you get an InstallShield error as I did - don't blame TP-LINK - it's your InstallShield regisrty. A quick fix for that is to run the Setup.exe from NT Authority.