A. 1. Close background apps: Press the recent apps button and swipe away any apps you are not using to free up system resources. 2. Restart your device: A simple restart can clear temporary files and free up memory, improving app performance. 3. Reduce app data: Go to Settings > Apps > TripIt > Storage and clear the app data. Note that this will reset the app, so you will need to log in again.

B. 4. Disable animations: Go to Settings > About phone > Tap 'Build number' 7 times to unlock Developer options. Then go to Settings > Developer options > Window animation scale, Transition animation scale, and Animator duration scale, and set them to 'Animation off'.