(model PBCM10) originally launched with ColorOS 5.2 based on Android 8.1 Oreo
A persistent OPPO trait. The firmware’s power-saving algorithms are overly aggressive, killing background apps (e.g., notification delivery for Gmail, Slack, or even WhatsApp) unless you manually lock them in the recent menu or adjust battery optimization settings. This can cause missed notifications. Firmware OPPO R15x
| Region | Build Number | Android | ColorOS | Security Patch | |---------|--------------|---------|---------|----------------| | India | CPH1835EX_11_C.20 | 10 | 11 | 2022-08-05 | | Global | CPH1835_11_C.19 | 10 | 11 | 2022-06-05 | | SEA | CPH1835_11_C.20 | 10 | 11 | 2022-08-05 | (model PBCM10) originally launched with ColorOS 5
Take note of the current firmware version of your device, as you'll need it later. killing background apps (e.g.