I had a Mate P20 Pro
I had a Mate P20 Pro. Its battery was getting weaker after almost 2 years, and still in warranty. I sent it off to be repaired (free DHL to their service centre and return) on Tuesday, and the phone was returned by Saturday. They had replaced the battery, but they had also replaced the back cover which had a slight dink in it, all for free. I cannot fault them. Excellent service.