The ZTE A31 Plus runs on Android 11 (Go edition) out of the box. The firmware version is usually denoted by a build number, which consists of a combination of letters and numbers. The build number for the ZTE A31 Plus is:
The ZTE A31 Plus will never be remembered as a flagship killer or a technological marvel. Its appeal lies in its affordability and essential functionality. But within that humble mission, the firmware plays a role far greater than most users realize. It is the silent partner that translates modest hardware into a usable daily driver. When ZTE gets the firmware right—with stable drivers, timely security patches, and efficient resource management—the A31 Plus offers remarkable value. When it falls short, the device becomes a frustrating reminder of how software can undermine hardware. zte a31 plus firmware
One notable firmware-related feature of the A31 Plus is its power management. The device uses a 3000–4000 mAh battery, and the firmware’s CPU governor and Doze mode (Android’s deep sleep state) are tuned for extended standby time. Users often report two days of light use, but heavy multitasking can cause thermal throttling, as the firmware prioritizes temperature control over peak performance. This is a conscious design choice: on a budget device, preventing overheating is more important than winning a benchmark race. The ZTE A31 Plus runs on Android 11