Most applications in this category serve one of three primary purposes:

Use the "Data warning & limit" section in your Google Fi or Android Settings to ensure your phone isn't intentionally restricting traffic.

Running older versions of Android that lack the latest network optimizations. How to Improve Speed Without New Apps

Throttling by your carrier once a certain limit is reached.

These "Download Accelerators" split files into multiple parts to download them simultaneously, often significantly decreasing the time it takes to save large files. Why Your Download Speed Might Be Slow

If you are looking to monitor or improve your mobile performance, generally refer to a category of Android applications designed to measure, manage, or boost the speed of your data connection. Core Functions of Download Speed Apps

You can often optimize your connection using built-in Android tools:

Physical distance from a router or cell tower.