Bookmark the official ZTE support page for your region. Avoid random “custom ROMs” from untrusted sources. Stick to the factory-flashed, fixed firmware, and your Blade V40 Design will serve you well for at least another two years.
ZTE has confirmed that the Blade V40 Design will receive Android 13 (some regions) and security patches until mid-2024. However, after ZTE stops support, community-backed firmwares (GSIs) will take over. For now, the most stable "firmware fixed" version is . zte blade v40 design firmware fixed
The subsequent updates tweaked the power management algorithms. By restricting background activity for rarely used apps and optimizing the standby state, the battery life was brought up to the standard expected of a 6000mAh unit. Users reported significant improvements in screen-on time after applying the update with the build number ending in .100 or newer. Bookmark the official ZTE support page for your region