realme UI 5.0 and above versions: will update the language resource automatically
realme UI 4.0 & 3.0: Settings > System & updates/System settings > Language > Click on the upper right corner > Language Update, the latest resource will be refreshed automatically, if there is an update, click the current resource date to update.
realme UI 2.0: Settings > Additional Settings > Language > Click on the upper right corner > Language Update, the latest resource will be refreshed automatically, if there is an update, click the current resource date to update.
realme UI 1.0: Settings > Language & region > Language update
realme R & Go & S & T & U Edition: not supported