User manual

 Show battery percentage on the status bar. If you want to see how
much battery is left just enable this feature by toggling [Show battery
percentage on the status bar] to green to enable.
6. Personalize your OPPO phone
6.1. ColorOS 5.2 device name
If you scan for a Wi-Fi Direct or Bluetooth connection with your OPPO phone, your
device name will display on the target devices.
Change device name for Wi-Fi and Bluetooth. Go to [Settings] > [About Phone].
You can also change the device name when you enable Bluetooth or Wi-Fi Direct.