Mine reaches six years on december, I do not remember the exact date (can look it up though if needed). It is still my main phone, altough the usage has lessened somewhat when I decided to move private e-mail to second Jolla.

Lately it has started acting up, but I'm going to use it up to six years if it does not turn into a brick. I might get it serviced, thorough cleaning.

If it breaks down, I'll have to consider integrationg rest of the usage to my second Jolla, or maybe I'll activate a third Jolla. First Jolla is my work phone.