In my mind, Surface Pro is on valid to use it for 3 years.
My 1st Surface pro 4 was facing flicking screen before Microsoft recall it.
the device only 1Year 13days, but Microsoft reject my case, need me to pay for replacement. So i make a report to NCCC...in the end, Microsoft accept my FOC replacement.(I cover under commercial warranty 3 years)
After a few month i used my replacement unit, the device is getting hot(my old device flicking after a few days of hot) so i submited a replacement( Microsoft start recall for screen flicking).
And now a new replacement unit i used for 5 months the battery can only used 2 hours with fully charging and power saving mode. So i just request for replacement, but i notice my 3 years warranty was gone(end July 2019).
and now Microsoft give me this reason.
We would like to inform as per request from escalation team. If the Prove of Purchase are not able provided we afraid they not able to transfer the warranty to the device right now.
***As per check with previous replacement device and Microsoft Policy, extended warranty only can have for commercial device only.***As you are using device under consumer user, they need a Prove of Purchase as prove the original device have a extended warranty.
In conclusion all my Surface Device only can last for 1 year or less than.