WhatsApp Calls Not Working on Android?
WhatsApp voice/video calls fail on Android 16 / One UI 8 — connecting forever, no ring, black video, permissions, battery restrictions, and when the mic/camera flex is next.
WhatsApp calls not working on Android after Android 16 / One UI 8 is almost always battery policy or permissions — chats keep moving, the call screen sits on Connecting…, or the phone never rings in a pocket. That is not Meta taking voice down.
Related: WhatsApp notifications delayed · WhatsApp on iOS 26 · One UI 8 · Android 16 problems · Samsung camera has stopped · backup WhatsApp.
Symptom map
| Pattern | Likely cause | First move |
|---|---|---|
| Outgoing Connecting… forever | Network / VPN / permission | Airplane toggle; VPN off |
| Outgoing OK, incoming silent | Battery / Sleeping apps | Unrestricted; Never sleeping |
| Ring, then black video | Camera permission or flex | System Camera test |
| Audio call, no mic | Mic permission or hardware | Recorder app test |
| Wi‑Fi OK, LTE fails | Carrier / 5G | LTE test; other SIM |
| Clone app rings, main does not | Dual Messenger | Use one copy; Unrestrict both |
1. Permissions WhatsApp actually needs
Settings → Apps → WhatsApp → Permissions:
- Microphone
- Camera
- Notifications (all categories, including Calls)
- Phone (for ConnectionService / overlay on some OEMs)
- Nearby devices / Bluetooth if you use BT headsets
Then inside WhatsApp: Settings → Notifications → Use high priority notifications (wording varies) and sounds On.
Android 16 notification permission is a one-shot prompt. If you denied it on first launch after the OS bump, calls will never surface.
Keep the phone off Deep sleep during the test — USB-C PD hub plus a proper brick so Device care does not immediately park the app.
2. Stop the OEM from eating incoming rings
This is the same family as delayed chat banners, but calls die first.
- Samsung: Settings → Apps → WhatsApp → Battery → Unrestricted; Device care → Battery → Never sleeping apps → add WhatsApp (and Galaxy Wearable if a watch is involved)
- Pixel: Settings → Apps → WhatsApp → Battery → Unrestricted
- Xiaomi / HyperOS: Autostart On, all battery savers Off for WhatsApp
Turn Data saver exceptions on for WhatsApp. Dual Messenger / Dual WhatsApp: either Unrestrict the clone too or delete it — two copies split FCM and one of them never rings.
Full chat-delay playbook: WhatsApp notifications delayed.
3. Network is not “WhatsApp servers”
- Airplane Mode 15 seconds
- VPN off (work profiles break WhatsApp’s UDP)
- Try the other network (Wi‑Fi vs LTE)
- Weak 5G search also cooks the phone mid-call — Pixel 10 overheating / Android overheating
- Private DNS / adblock hosts files that sinkhole WhatsApp STUN — disable for a test
WhatsApp calls are not carrier VoLTE. 4G data but no cellular calls is SIM 2 / blacklist — a different ticket.
4. Black video vs dead mic — software or hardware
Open the system Camera and the Recorder app.
| System app | Conclusion | |
|---|---|---|
| Camera fine, WhatsApp black | App cache / permission | Clear WhatsApp cache; reinstall after backup |
| Camera black / “has stopped” | Flex / module | Samsung camera — reseat, don’t default to a new module |
| Recorder fine, WhatsApp mute | WhatsApp mic permission | Re-grant; clear cache |
| Recorder dead too | Mic hardware / board | Repair path, not a WhatsApp setting |
After a screen job, random other faults can still be a proximity / flex story on iPhone; on Samsung, a back-glass or camera job is the usual unseated FPC. Do not replace the camera because WhatsApp preview is black if Camera.app is also black — reseat first.
5. Cache, backup, reinstall
WhatsApp → Chat Backup before Delete.
Clear cache is safe. Clear data is a new registration.
Then update from Play Store. If Play itself is sick after Android 16: Play Store.
Desktop linked devices acting up: WhatsApp Desktop. iPhone in the same family: WhatsApp iOS 26.
Do / Don’t
| Do | Don’t |
|---|---|
| Unrestrict battery + all call notifications | Clear data to “fix calls” without a backup |
| Test Camera.app and Recorder | Buy a camera module because WhatsApp preview is black |
| VPN off, second network | Blame Meta because One UI 8 put WhatsApp to sleep |
| One WhatsApp, not a starving clone | Ignore Dual Messenger |
| Backup, then reinstall | Factory reset the Galaxy on day one of Android 16 |
Bottom line
Permissions → Unrestricted / Never sleeping → Camera.app test → cache, not Clear data. WhatsApp calls on Android 16 fail because the OEM parked the app or the camera flex is unseated — not because chats still working means “the internet is fine.”
Frequently Asked Questions
Chats work, WhatsApp calls do not — is that WhatsApp down?
No. Chat is one socket; calls need mic/camera permission, Notification access for ringing, and the phone not sleeping the app. Android 16 / One UI 8 are aggressive about that.
Incoming calls never ring, outgoing work?
Battery restriction or Dual Messenger clone. Set WhatsApp to Unrestricted / Never sleeping and disable the clone if you do not use it.
Video is black, audio is fine?
Camera permission, or a hardware module/flex if the system Camera app is also black. Reseat first on Samsung — do not start with a new camera.
Works on Wi‑Fi, fails on LTE (or reverse)?
Carrier VoIP block or a bad 5G path. Test the other network; disable VPN. WhatsApp calls are not the same as cellular Voice over LTE.
iPhone WhatsApp calls are fine, Android is not?
Use the iOS WhatsApp guide for the iPhone. This page is OEM battery + permissions on Galaxy/Pixel.
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