Openreach modem

[#1]

I've recently changed from Bt to Plusnet and was using the bt hub 4 in conjunction with an Openreach modem. Do I still need to use the modem with the Plusnet router?

[#2]

If you've been sent the Hub one, answer is no 
Just plug phone into the hub one and away you go 

[#3]

Thank you! I'll give it a go