You dont need any receipt or any warranty card or anything other thing...

If your phone is genuinely register in htc system all you need to do is bring the phone itself to any htc service center..easy as that..i only bring my phone without anything to htc kelana jaya service center to replace my camera for the purple tint problem..send it in on 26 aug and on 6 sept is ready but i dont have the time to collect so will collect in on monday..hopefully the camera is fix...

Hey guys, just got back my HTC one from service center the purple tint issue for now have been solve..for workmanship wise..I would say I'm impressed..I have a small gap between the speaker cover and screen..after repair I have zero gap lol! The only part that was visible of scratch is the back antenna part..I guess they peel it off that's why I can see some scratches..other than that all is perfect..hopefully the camera would go haywire again

Guys i try to change my ip to a US already..but i still getting malaysia play store...any idea?