Sim card for mobile router TP-Link TL-MR6400

[Daver3]

I am shortly to move into a house that doesn’t have a landline, so have bought myself a TP-Link 4G LTE router. I have seen on the internet that you can use a phone SIM card in such a mobile router, but when I put the spare SIM card I had in the router, the PC and laptop connect to the router but the router does not go online. Does anyone know if I need a specific SIM card for this router? Thanks in advance.

[XRaySpeX]

You may put any SIM in a mobile router. What type of SIM have you used? Does it have an extant plan on it? Is it on PAYG?

[Daver3]

It's an O2 PAYG.

[XRaySpeX]

So, does it have an data Bolt-On on it or credit on it to pay their £2/day for data? 

[Daver3]

No - it's occurred to me that it's not an up-to-date SIM, maybe a few months old so I think it has been cancelled. On Amazon, where I got the mobile router, next to it was one of those 'Customers who bought this item also bought this', and there was a Three SIM card. I bought it, put it in and presto - it works. Thanks for your replies though.

[XRaySpeX]

Thanks! You're welcome 🙂 ! Glad I could be of assistance & it is now sorted.