I bought this with the preloaded 3gb even though I already have a dongle with 3 mobile broadband but due to the use of more wifi devices that I use I decided to opt for this.
Very simple to use, for anyone wondering if they can put their contract sim into a pay as you go device the answer is simply YES and the bonus is a family member now has their own access to the internet as I no longer needed the contract dongle.
Anyway back to the item, very good size, you wouldn't lose it but the right size to pop in your bag. The connection to devices is incredibly simple, load your device, turn on the mifi dongle, wait for device to locate your mif this should not take long at all, then pop in the wifi key and your ready to go.
I didnt bother with the instructions to be honest as I have used my phone as a wifi hotspot so knew what I was doing. The only downside is that it does look at little cheap but otherwise fine.
You will not need to enter the wifi key every time your needing access to the internet as your device will remember it unless you select to forget it.
Just a slight addition to my review which doesn't change my rating but the battery life seems about 3 and a bit hours life when not plugged in and charging but still a good investment.
The wifi key allows your connection to be secure from anyone wanting access unless you give them the key. The device will support fove wifi devices at one time but remember this will slow your connection.
All in all a handy piece of kit that is highly recommended to anyone with lots of wifi gadgets out their like tablets, phones and laptops.