Summary: Before we got decent broadband I bought this to provide a backup connection via an O2 3G PAYG dongle as I need a reliable connection to work from home. This did not disappoint - had no problems getting online with the dongle, even though it is an old one that doesn't work with Windows 8. Have not tried it with 4G as we don't have that in our area. The aerial is big but at least we had a decent wifi signal.
Summary: This is very reasonably priced piece of kit, easily set up, with simple instuctions. Mine was bought to set up in a mobile sales environment, with a laptop connected via ethernet cable to the router, which was connected via the usb port to a 3G Huawei BT Mobile dongle. In turn the router was connected over WiFi to 2 Windows ruggedised Tablets and an iPad. All of these connected seamlessly together, and the 3G connection works very well.
Summary: I bought this Router to set up on a 3G Dongle connection in Slovakia (due to unavailability of normal Broadband connection in area). So it was a bit of risk that it may work & it may not work. I have a 3G USB Dongle (Huawie EC168) with Orange Slovakia. Initially it gave me some issues, but then I realised that its because of the pin code in dial out connection on 3G settings on my account.
Summary: Just plugged in my 3G dongle and straight away I could access internet. just needed to change SSID and add a WPA2 key and its working perfect. plus device has loads of advanced networking settings. Absolute bargain!!
Summary: It is really good. I mounted it on the Window vertically. Designed for good air flow and passive cooling. Lan Speed is good. In case of freequent power failures (I do not have UPS) , use the dongle directly for online transactions.