Answer: The handset ships with Google's mobile operating system release 12 (customized with One UI 4.1) and is covered by the manufacturer's policy for four major OS upgrades plus five years of security patches – meaning upgrades are available up through release 16 within the promised support window.Factory build: release…...

Recommendation: Keep the handset on MIUI firmware based on Oreo 8.1 for the best official stability; most regional builds only receive a single major platform upgrade to Pie 9.0. For continued security patches or newer platform releases beyond the vendor's final public package, use a well-maintained community build matched to…...