After acquiring a brand new iphone 12 max pro with unlimited calls and data, my sacred Samsung PAYG 3G phone has stopped working - probably having a temper tantrum. I have around £29 credit on the sim and I now plan to cancel my monthly contract with Tesco for my 4G Motorola which allows me a derisory amount of data each month. The contract runs out in a few weeks anyway. So I'm thinking of removing the 3G sim and putting it in the 4G phone. I know it won't give me data but it should still work as a phone?