Unlock your phone and go to Settings .
Keeping your ZTE Blade A35 Core updated is crucial for security, performance, and access to new features. System updates (often called OTA - Over-the-Air) patch vulnerabilities, fix bugs, and improve battery life. How to Update Software on ZTE Blade A35 Core
Tap Check for Updates . The device will contact ZTE’s servers. Unlock your phone and go to Settings
Scroll down and tap System (or About Phone on some UI versions). How to Update Software on ZTE Blade A35 Core
If an update is available, tap Download (wait for completion over Wi-Fi).