WhatsApp for Samsung Galaxy Z Flip

Samsung now lets you run full apps on the cover screen natively. Go to Settings > Advanced features > Labs > Apps allowed on cover screen and toggle WhatsApp on. Then close the phone, wake the cover screen, swipe to the apps area, and open WhatsApp to use it on the front display. On older Flip models that lack this Labs option, install Good Lock and its MultiStar module, open MultiStar > I love Galaxy Foldable > Launcher Widget, select WhatsApp, then add the Good Lock Launcher widget to the cover screen to launch it there. See how others solved this on Reddit

Yes. WhatsApp offers an official cover-screen widget. Wake the cover screen, swipe across your widgets, then swipe to the end and tap the (+) icon to open the widget picker. Find WhatsApp in the list and add it so you can see and reply to recent chats without opening the phone. Update WhatsApp to the latest version from the Play Store first, since older builds don't expose the widget. See how others solved this on Reddit

When a WhatsApp notification appears on the cover screen, tap it to expand it and use the inline reply field with the cover-screen keyboard. If you don't see notifications there, check Settings > Notifications and make sure WhatsApp alerts are allowed on the cover screen. For full chat access, enable WhatsApp under Settings > Advanced features > Labs > Apps allowed on cover screen, which lets you open the whole conversation and type freely without flipping the phone open. See how others solved this on Reddit

Flex mode splits the screen when the hinge is partially bent, so opening the phone fully flat to 180 degrees should return the call to a normal full-screen view. If WhatsApp keeps forcing the split layout, go to Settings > Advanced features > Labs > Flex mode panel and toggle WhatsApp off in that list so the system stops applying the Flex panel to it. Also update WhatsApp so its current foldable layout handling is applied. See how others solved this on Reddit

WhatsApp doesn't map answer or end-call actions to the fold gesture, so opening or closing the phone won't reliably pick up or drop a call. To handle calls with the phone closed, enable WhatsApp under Settings > Advanced features > Labs > Apps allowed on cover screen so the incoming-call screen shows on the front display, then accept or decline by tapping it directly. See how others solved this on Reddit

First enable WhatsApp under Settings > Advanced features > Labs > Apps allowed on cover screen. With that on, you can fold the phone partway during a call to trigger Flex mode, which keeps the video feed on the upper half so it stays visible on the outer screen. Note that WhatsApp doesn't always hand a full call cleanly to the closed cover display, so behavior can vary by app and software version. See how others solved this on Reddit