4G feature/dumb phone (with 2 SIM slots if possible) (Isleworth TW7)

My lovely trusty Nokia C2-01 mobile phone (with tons of memory and features) is sadly no longer supported by any providers as it is a 3G type.

I need a 4G feature/dumb phone that has similar capacities. If you've upgraded to a Smartphone and have no more use for a 4G feature phone, I'd be grateful to take it off your hands and give it a loving home.