GPS is the hungriest sensor on your phone. On a long train journey, a speed test can eat 10–20% battery per hour. These 7 tips keep your phone alive without killing accuracy.
1. Lower screen brightness – the display uses more power than GPS itself. Our tool's "Keep screen on" is convenient, but dim the screen.
2. Turn off the screen between checks – start the test, lock the phone, wake it when curious. GPS keeps running in most browsers.
3. Close other apps – maps, video and social apps compete for battery.
4. Enable battery saver – Android and iPhone battery savers barely affect GPS accuracy.
5. Load the page on WiFi first – load the page on station WiFi before departure.
6. Use airplane mode + GPS? – No: browsers need location services on; airplane mode disables them on most phones.
7. Carry a power bank – the honest answer for 8-hour journeys.
Roughly 10–20% per hour depending on phone age and screen-on time. Newer phones with efficient chips sit at the lower end.
Does GPS work with battery saver on?
Yes, on both Android and iPhone. Accuracy is barely affected.
Can I lock the screen during the test?
In most mobile browsers GPS continues with the screen locked, though some browsers pause it. Test yours before the journey.
Does 5G drain more than GPS?
Yes — mobile data, especially weak-signal searching in ghats, often drains more than the GPS chip.
New to the tool? Read how the train speed test works.