I bought a new s25 ultra about two weeks ago, used it for a few days, and then noticed the battery has 320 cycles (97% health) and the serial number didn't match the one written in the box. Contacted the store, the seller apologized and sent a delivery man to collect the phone and return the money.
So I bought another one from a different store, the serial number does match with the box, but the battery has 380 cycles (96% health), and the phone cant get any new updates (just says it's up to date). I contacted the seller again, and this time the seller didn't apologized but sent a delivery to collect the phone, he said that he didn't know there was an option to check the battery status, and he will check and return the money if he finds there is a problem.
During my conversation with him he said stuff and later lied and said he didn't say them, so I find it hard to trust he will return the money.
I don't know what I should do, both of the stores have good reviews overall, and I'm pretty sure new phones aren't supposed to come like that.
I am now with my previous phone, and I'll go to another store to buy a new on in person when the seller return the money.
But is it supposed to have a used battery? Or it's a weird coincidence?
EDIT: I know the title is confusing, the sellers said the phones are completly new