Final answer:
To keep an app running in the background on an iPhone, you can use background execution capabilities provided by iOS, such as enabling the 'Background Modes' capability or using background fetch and silent push notifications.
Step-by-step explanation:
To keep an app running in the background on an iPhone, you can use the background execution capabilities provided by iOS. One way to achieve this is by enabling the 'Background Modes' capability in your app settings. This allows your app to continue running in the background and perform certain tasks, such as playing audio or receiving location updates.
Another approach is to use background fetch or silent push notifications. With background fetch, your app can periodically wake up in the background and fetch new data. Silent push notifications allow your app to receive updates from a server even when it's not actively running in the foreground.
It's important to note that the iOS platform has certain limitations on background execution to preserve battery life and user privacy. Ensure that your app meets these requirements and follows Apple's guidelines for proper background use.