1Sam and Chloe took a nine hour train to the coast.
2Chloe's phone dropped to twenty percent by noon.
3She had forgotten her power bank at home.
4Sam showed her a few tricks to save power.
5First, she lowered the screen brightness by half.
6The screen uses more energy than anything else.
7Then she turned on the battery saving mode.
8This stops apps from refreshing in the background.
9She also closed the navigation app she had left open.
10Location services drain the battery surprisingly fast.
11Next, Sam asked about her mobile data plan.
12Chloe only had two gigabytes left for the month.
13He suggested downloading videos before future trips.
14Streaming on the train uses data very quickly.
15She switched her music app to offline mode.
16She also stopped photos from syncing on mobile data.
17By evening, her phone still had fifteen percent left.
18Chloe finished the journey with power to spare.
19She ordered a power bank as soon as they arrived.
20Now she checks her settings before every long trip.