Iphone 13 battery says Unknown device

My IPhone with all genuine parts started not charging and telling me my battery was not genuine. I contacted apple support and they wanted me to bring it in to the store to be fixed which I’m sure would cost because I was out of coverage. Luckily T-Mobile was able to immediately replace my device for only $5. Apple support really is a joke especially since from what I’ve read this has happened to multiple people and they take no responsibility.