Networks as a processes categories involves downloading and uploading. The Speed of downloading and uploading is determined by some factors that is similarly used for other processes (see process app).
There is a trick to maximize result within the same given time, professional users often use it to get fast results, which is called Spam Upload Tricks. Although it's called spam upload tricks, the page creator commented that it works on all processes, not only limited to uploading only.
Network as an in-game network speed is one of the factors that determine the uploading and downloading speed. There are multiples networks (links given below), which can only bought through the store (It's not an app) the same way with devices.