Just 2.5 years lifespan
I have had this phone, Umidigi Bison (2021), for 2 and a half years now, and it recently died out of nowhere. At first, I thought it was an Android issue, so I took it apart to reconnect the battery and remove the residual power, but without being able to get it to work. Tests here and there, in short, it has a problem on the main board, in just 2 and a half years, compared to having a Huawei running non-stop for almost 6 years and counting.