This is being seen not only in old phones but also in new phones like Samsung, Xiaomi, Pixel, OnePlus and Oppo. Let us tell you that in most cases it is not a software malfunction or virus, but a common technical reason related to the battery. Today we will understand in simple language why this happens.
The first thing that is important to understand is that the percentage of battery shown in the phone is not measured directly like the petrol filled in a tank. This is an estimate based on the battery’s voltage, current flow, temperature and past usage patterns. Lithium-ion batteries, which are used in almost every smartphone, do not discharge at the same rate, especially as they get older, so the phone’s system constantly adjusts its calculations. This is the reason why sometimes this number suddenly jumps or falls.
Published at : 29 Jun 2026 03:10 AM (IST)
