Which modem for Macbook Air?

There are various names for it but I call it an internet stick. The most significant update today is LTE speeds which are much quicker compared to the previous 3G. This depends if you have LTE available in your area but most cities have it by now. This will use up your monthly quota faster (if you have one) so its up to you if this is an advantage. It might have a slightly better antenna but I doubt it.

The standalone (mobile hotspot or MiFi device) is better if you want to use multiple devices or devices that only use WiFi (like a tablet). It needs to have a charged battery or be plugged in to work. Some might use USB for power, but I never checked so I'm not sure. It is definitely bigger so you need to have space for it.

The communications issue could be a bad dongle, but it could be a reception issue. Has he tried it in a different area, maybe near a window?

MiniD3 said:

Will pass that on,
Your idea may help, bit hard to move the laptop near a window so a remote modem may help
........Gary

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Get a Huawei E5776 4G/LTS MiFi device. I use one when I am not in the office or at home and it's excellent. Before I bought this device, I was using the Huawei E586 3G modem which is much cheaper but only 3G, but once again it was excellent.

If moving the laptop has improved a little then he could try to find out where the nearest tower is so to aim for it. They are usually near a main road or big stores. Look up a few images for how they look.

For a quick fix, can he get a USB extension cable? Its not ideal, but it allows the laptop to stay in place and they are not expensive.