Few questions about mobile broadband

[Horizon]

Struggling to find the answers on the website so thought I'd post here.

I'm looking at getting a 4G dongle for a family member. I see that when you buy you can pick which package you want, and I like the look of the 5GB with a 90 day limit, but I can't find any info about subsequent top ups. Once the initial data is used up (or the 90 days is passed), are you then able to purchase a top up for another 90 days, or are you then limited to buying top ups that only last one month?

Also o2 seem to offer their own branded dongle, and the Huawei one. I just need the 4G access, no need for wifi hotspot. There's not many reviews on these dongles. Does anyone have any recent experience of them? It's the Huawei 4G one I'm leaning towards. 

[MI5 Level 94: Supreme · Accepted solution]

I have the Huawei 4g dongle which can be used for both direct access and a WiFi hotspot.
Mine is on a straight PAYG where I just top up as required but when you go to top up you can choose which package you want so can stay on the 90 day or change each time.

[Horizon]

Thanks for the reply. Is it a user friendly bit of kit?  If the dongle is plugged in then will it automatically connect to mobile broadband, or is it case of having to log in each time etc?

[MI5 Level 94: Supreme]

Yes it's very easy to use.
The first time you plug into your laptop you have to type in the password so the computer will connect to it (password is in the packaging) then after that, it will auto connect each time you plug it in.