iPhone 15 was purchased and activated in December 2024, and the warranty period is indicated until April 2025
iPhone 15, iOS 18
Where did you purchase the phone from? If it wasn't Apple or an authorized reseller, then the store you bought it from bought it from Apple back in April 2024 then resold it to you.
No, it starts from the date of purchase from Apple or authorized reseller.
You didn't purchase it from one of those, you purchased it from an unauthorized store that purchased it back in April. The warranty started the day they purchased the phone. Then they resold it to you.
Bought in China with delivery to Russia. Does the warranty not start from the date of activation of the device?
How to confirm the date of purchase of iPhone 15
