One line in Google’s Android 17 developer notes is generating more search interest than its size suggests: for apps that target API level 37, the opt-out from orientation and resizing restrictions on large screens is gone. On devices with a screen wider than 600dp (tablets, foldables, many Chromebooks), the system now ignores the old instructions that locked an app to portrait, stopped it resizing, or fixed its aspect ratio.
What has actually changed
For years an Android app could say “portrait only, please, and do not resize me” and the system would obey, even on a tablet. That was the cheap way to ship a phone-shaped app everywhere. Under Android 17 that instruction is ignored once the app targets API 37. The app will be rotated, split-screened and stretched whether or not it was designed for it.
Android 17 itself shipped in June. The change bites when you raise your app’s target level, which Google Play requires on a yearly cycle. It is not an emergency today. It is a known cost with a date attached.
Who is exposed
- Phone-first apps that were locked to portrait and never tested on a tablet or foldable.
- Apps with fixed-size layouts, custom camera or media screens, or hard-coded dimensions.
- Cross-platform apps (Flutter, React Native) where nobody has checked the Android large-screen behaviour recently.
Apps built with adaptive layouts from the start are largely untouched.
What it costs
For a simple app, a layout audit and a few responsive fixes. For a complex one, such as forms, dashboards or media-heavy screens, it can be a proper design task, because a stretched phone layout on a tablet looks broken and users review it that way. The worst version is discovering it in the week your target-level deadline arrives.
So what
Ask your developer which screen sizes your Android app has actually been tested on, and whether it is on track for API 37. If the answer is “phones only”, put an adaptive-layout check into the next release plan rather than the one after the deadline. BuildApps builds and modernises iOS and Android apps with large-screen behaviour designed in. To get an existing app reviewed, start a project.