Which choice saves the MOST battery for an app that needs new messages?

  1. Polling the server every 10 seconds
  2. High-accuracy GPS
  3. Push notifications (FCM) when new data arrives
  4. Keeping a wake lock
Answer

C) Push notifications (FCM) when new data arrives

Push wakes the app only when needed.

Computer Science MCQ · More Performance, Power, Platform Constraints and Emerging Technologies MCQs · Practise