Soldato
http://www.three.co.uk/lenovo/p2/plans?memory=32&colour=Grey&plans=monthly
PAYG - you have to add a tenner top-up, but I didn't do that as I switched to a Thre SIM.
Just updated mine to Nougat, fingers crossed for smooth sailing!
I didn't have to pay the £10 top up. Just walked into the 3 store at Meadowhall, Sheffield and told them I already had a 3 sim (which I don't!) and he just sold me the handset for £199.99.
On another point the signal strength is superb and the call quality is good too, much better than my S7.
Also how did you update to Nougat? Mines not bringing up an updates via the checker.