- smartphones, which maintain their functionality for at least 5 years have to be considered sustainable & resistant devices ++ I really hope that you can perform the #10yearChallenge with your Lumia ++ once I have compared Microsoft Lumia to the International Space Station, which is formed from modules ++ I think many essential features of a Lumia phone can resist beyond 2021 ++ official monthly security & non-security updates support (as it stands now) will be available only through December 2019 & backups will work at least until March 2020 ++ there are good chances that important apps will be in top shape at least through 2020 ++ obviously you will need backup batteries, because these will weaken after 3 years of usage (it is like a trip to a distant planet & hopefully it is not an one way ticket & it is better than to the moon & back) ++ making phone calls, messaging, taking photos & videos, surfing the net, learning, getting news & being on top of events it is certainly possible with Microsoft Lumia even after 10 years ++ Windows Phone Lumia Denim 8.1s are still functional (support has ended more than 2 years ago) & I have spotted also Windows Phone 7s still running ++
++ some developers are trying to install & run full Windows 10 ARM on Lumia devices & they may get a breakthrough ++
++ if this was a case study & I should decide what action to take from the company's perspective : well, then I would roll out an even better Windows Mobile OS & would upgrade to that all devices running the Anniversary Update 1607 (or at least version 1709) & bring to the market new updated devices for the Windows Mobile Community & would begin a slow, but steady process to be the most important mobile device for Windows users ++
++ it is very important for the company to get the continuity issue right, because if they give up, it will be more difficult to convince users later in time (if some day, maybe under a new leadership they want to come back into the market) ++ I am convinced that, if the present leadership wants to learn from mistakes, they can do a better job than in the past & be successful ++