Download video in phone according to storage-
According to the storage also you should download things in the phone. In case of less storage, many times we download more videos or photos in it. Due to this the speed of the phone becomes very slow. In such a situation, whenever you download something or the storage full warning comes, then you should first free the storage. Even when the storage is full, the speed drops considerably.
The speed of the phone decreases even in the absence of software update-
The third biggest reason behind the low speed of the phone is not updating. If you also have a smartphone and you have not updated it for a long time, then you should update it first. Better hardware also requires better software updates. Hardware works well only when the software is updated.