The taxi app of Uber captures a huge amount of data on all its users and uses that information to direct its business strategy.
Uber knows when the battery on your phone is running low – and that you are more likely to pay higher “surge” prices for a car as a result… Uber knows whether a user is on low battery because the app needs to use that information to go into power-saving mode.
Uber knows when your phone is running out of battery – The Indipendent