Negative timespan on battery usage graph and blank WiFi data usage graph on CM12.1 after installing WhatsApp I recently installed CM12.1 on my Moto G 2013 XT1033. After installing WhatsApp and rebooting, the data usage meter isn't showing. The same goes for the battery usage details.





Click image(s) for larger versions



data usage showing up weird data cycles.
It's a bug. Just try to restart your phone a couple times, and it will be ok.