How to Save Phone Battery When Using an eSIM Abroad

One of the modern traveler’s biggest anxieties is running out of battery halfway through the day: no GPS, no maps, no Uber and no way to capture that incredible sunset. The good news is there are specific settings that can make your battery last hours longer, without sacrificing your eSIM’s functionality or your essential apps.

Does an eSIM use more battery than a physical SIM?

In practical terms, the difference in battery consumption between an eSIM and a physical SIM is minimal. However, having two lines active at the same time (your physical SIM + the eSIM) can increase consumption, because the phone is managing two network connections. If you don’t need your physical SIM active at your destination, disabling it can save you some battery.

The 8 settings that save the most battery while traveling

1. Lower your screen brightness: full brightness can use up to 30% of your battery. Drop it to 50–60% — still perfectly visible outdoors in most conditions.

2. Turn on low power mode: iOS and Android both have low-power modes that cut background processes, automatic updates and visual effects. Switch it on when your battery drops below 50%.

3. Turn off Bluetooth if you’re not using it: a small but constant drain when it’s actively searching for devices.

4. Limit background app refresh: on iOS: Settings → General → Background App Refresh → enable it only for the apps that really need it (WhatsApp, Maps). On Android: Settings → Battery → Battery optimization.

5. Download offline maps: Google Maps burns far more data and battery when it downloads maps in real time. Offline maps are more efficient on both data and battery.

6. Use dark mode: on OLED screens (iPhone X and later, many premium Androids), dark mode significantly reduces screen consumption because black pixels use less energy.

7. Carry a portable battery (power bank): no setting beats the peace of mind of having backup power. A 10,000 mAh power bank can fully recharge most smartphones more than twice.

8. Turn off the SIM you’re not using at your destination: if your home SIM has no service at your destination, your phone will drain battery constantly searching for signal. Disable it or set it to calls only.

With these settings and your Gigapanda eSIM active, your phone will be ready for your most intense day of sightseeing. Activate your plan now.