How can I reduce cellular data battery drain on my Android phone when on vacation?

1. Set Network Mode to 4G/LTE: Go to Settings > Connections > Mobile Networks > Network Mode and choose the option without 5G. 2. Restrict Background Data: Go to Settings > Network & Internet > Data Usage and enable Data Saver or manually restrict background data for individual apps. 3. Use Battery Saver Mode: Activate this feature from your quick settings panel to limit background processes and conserve power.