warranty void on hard reset of any iphone

As long as you don't crack it open or abuse it (hardware) or futz up the system with a jailbreak (software), the warranty will not be voided. Force Restart (the official name) or even a full wipe, both of which can be useful repair procedures, do not void anything.

Hi

No it doesn't void your warranty.

Cheers

Brian 🇬-1F1E7;