Google is now deploying Android’s new 'advanced' sideloading flow, which enforces a 24-hour delay before installing unverified apps. This security measure precedes the developer verification requirement starting September 30, 2026.
24-hour delay for installing unverified apps
Deployment began on August 18, 2026. To enable this flow, the user must go to Developer Options and turn on "Allow unverified developer apps." A series of warnings then appears, followed by a 24-hour waiting period before the app can be installed. This delay starts when returning to the same page after enabling the option.
The setting can be enabled temporarily (7 days) or indefinitely. Once the advanced flow is activated, it is not necessary to keep Developer Options turned on. Installations via ADB (Android Debug Bridge) are not affected by this measure.
Developer verification: timeline and scope
Developer verification takes effect on September 30, 2026, in four countries: Brazil, Indonesia, Singapore, and Thailand. It will initially apply to apps distributed via Google Play, HONOR App Market, OPPO App Market, Galaxy Store, Palm Store, V-Appstore, and GetApps. The rollout will expand to all regions and app installations in 2027.
The advanced flow also applies to updates for already installed apps. If the user disables the flow, updates for unverified apps will fail until it is reactivated. A 10-minute grace period is granted to re-enable the flow without restarting the 24-hour delay.
A criticized system, but justified by security
This new process aims to disrupt scams where victims are guided to install malicious apps. Mishaal Rahman, Android community engagement lead at Google, notes that even an app installed before verification could later receive a malicious update.
User reactions remain mixed. A March 2026 survey by Android Authority found that 79% of 7,300 respondents considered these rules too restrictive or excessive for an open system like Android. Comments under the official Reddit announcement echo similar concerns, particularly about the added complexity for updates.
"It doesn’t matter if the APK comes from F-Droid, another store, or elsewhere: only the developer’s registration status matters." — Mishaal Rahman, Android community engagement lead at GoogleTranslated from French
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How to enable it earlier?
The advanced flow relies on a system service called "Android Developer Verifier," available via an app of the same name on the Google Play Store. Manually installing it can speed up the appearance of the new flow.
With this gradual rollout, Google is strengthening barriers against unverified app installations, risking frustration among users accustomed to Android’s freedom. The global expansion in 2027 will mark another step in securing the system, but also in controlling it.
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