The Android 13 beta programme for the Zenfone 9, which debuted with Android 12 last month, has been announced by Asus.
By going to Settings > System > System update on their Zenfone 9, selecting the gear icon in the top-right corner, and then selecting "Enroll in the Beta Test Program," interested parties can submit an application for the beta programme. Then click "Agree," create an Asus member account if you don't already have one, complete the beta test application, and then click "Submit."
You will be notified through email and will get the Android 13 beta on your Zenfone 9 if your application is approved. Before moving forward, keep in mind that the beta build can include flaws that negatively affect how users interact with it, so it's better to avoid using it on your main device.
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