So I've been doing a bit of googling, and found out that the main culprit of iPhones in general slowing down over the years in terms of speed and performance is mainly because of one thing - The battery, how true is this ? I've always had the misconception that iPhones slows down over the years is because of the lack of storage / half - full storage etc, but turns out I was wrong, the speed has nothing to do with your storage and/or how much GB you bought the phone with.

But still, hoping to hear from all of you out there whether or not it's true that the battery is the main culprit affecting the speed of iPhones, and changing to a new battery would solve the issue ?