To customize subtitles, open the video, tap on the screen, then select the 'Subtitles' option. You can change the font size, color, and background. Adjust these settings according to your preferences for a better viewing experience.

Yes, MX Player supports network streams. To play one, click the 'Network Stream' option in the main menu and enter the URL of the stream you wish to watch. Make sure the URL is valid for it to work.

You can adjust the playback speed by tapping the screen while a video is playing. Navigate to 'Playback Speed' and select your preferred speed setting from the options available.

To create a playlist in MX Player, follow these steps: 1. Open the app and go to the 'Local' tab. 2. Select the videos you want to add. 3. Tap the 'Add to Playlist' option. 4. Create a new playlist or add to an existing one.

To use Picture-in-Picture mode in MX Player, first enable it in the app settings. Then, play a video and press the home button. The video will minimize into a small screen that can be moved around while you use other apps.