On the Oppo-Smartphone only an individual data warning can be defined, which is displayed once after reaching the defined data usage. To use the data warning, the data limit must be activated.
Note: The shown data warning is only available from ColorOS 7 (Android 10) on.
- Open the Settings
- Tap on SIM card & mobile data
- Tap on Data usage
- Tap on Mobile Data Limit
- Enable or Disable Set monthly data warning
- Tap on Data warning
- Adjust the settings and tap on Save