If you’re an iPhone owner, you know how frustrating it can be when your device begins to run super slow. Though there are a multitude of things that can cause an iPhone to start lagging, something that many people tend to ignore is the settings on their phone. When certain settings are turned on or off, they can easily have an impact on how quickly an iPhone functions. Read more about four settings tech pros say can cause your iPhone to run slower when turned on or off below.