EE PAYG is eye watering, but all we can reliably make calls on in the village, so I haz a SIM and it has my main mobile number.
Use my three SIM for more, these days. Have been spending a tenner a month on it, recently, though, mostly on the penny a meg data, so may consider one of their essential contracts when it runs out, as they're £9 or £11 and pretty data heavy, which is what I use most of. No iPhone - don't want one. Loving my Moto G4 (and not paying over the odds for it as part of a contract)