Final answer:
To keep apps running in the background on an iPhone, ensure 'Background App Refresh' is enabled, avoid closing them manually from the app switcher, and check your battery settings to make sure Low Power Mode isn't restricting background activity.
Step-by-step explanation:
To keep apps running in the background on an iPhone, you don't need to do much since iOS, the operating system of the iPhone, manages background processes automatically. However, there are a few things you can do to ensure your apps aren't closed or affected by the system's memory management.
Firstly, avoid manually closing apps from the app switcher unless they are malfunctioning, as iOS will manage them efficiently. Secondly, check the settings of individual apps to ensure they are set to refresh in the background if needed. To do this, go to Settings, scroll down to the app you want to manage, and ensure 'Background App Refresh' is on. Lastly, be mindful of your battery settings. Low Power Mode can restrict background activity, so ensure it's off if you want apps to continue their background processes.
Keep in mind that some apps are designed to run in the background without any additional settings, such as music players or GPS apps, while others may not have this capability depending on their design and the restrictions imposed by iOS.