IPhone 6s does not keep the charge

Hello folks.

I have this Iphone with a new and original battery. I can charge the battery OK to 100% but the charge only lasts a few minutes and then the phone goes black screen. Then I have to put it on charge again.



What can I do about it?

Thanks a lot and best regards

---

› See More: IPhone 6s does not keep the charge

Thanks for the information.