I've had my Galaxy A71 since July 2020 and hadn't had any issue with it until this winter, when I started experiencing sudden battery drainage for no apparent reason. For example, I would be using my phone as usual and the battery life would slowly go down until all of a sudden it would drop in a matter of minutes to 0% and shut down.
At first I thought it was a temperature thing since it would often happen when I would go on walks in the winter, but even now with warmer temperatures it can happen. I noticed it's especially when I'm walking and listening to stuff on Spotify, so maybe it is related ?
If anyone has experienced that with this device or another one, what did you do to solve it? It doesn't happen often enough to be a real hindrance but if it's a bigger problem I'd like to get it solved before my guarantee expires!