You open the Wyze app, tap on your v4, and there's crystal-clear 2.5K video but no audio at all. The camera's microphone isn't picking anything up. It's like watching a silent movie. Most of the time this comes down to a setting you didn't even know existed, a permissions hiccup, or a quick power cycle.
Check the Mute Icon in the Live View
Pop open the Wyze app and tap into your v4's live stream. Look at the bottom of the screen for a small microphone icon. If it has a slash through it, the camera's mic is muted inside the app. Tap it to unmute. That's the single most common reason for no audio on a Wyze Cam, someone hit the button without realizing it.
While you're there, also tap the speaker icon. The v4 has a built-in speaker for two-way talk, and muting that side won't affect the mic, but it's worth checking both.
Check Your Phone's Microphone Permission
The Wyze app needs permission to use your phone's microphone for the two-way talk feature to pass audio through. On iOS, go to Settings > Wyze > Microphone and make sure it's set to "On." On Android, it's Settings > Apps > Wyze > Permissions > Microphone and set to "Allow only while using the app." If permission was denied, the app can't relay audio from the camera to you.
Even if the permission is on, toggling it off and back on can reset a stuck audio channel. Try that if the basics don't work.
Power Cycle the Wyze Cam v4
Unplug the USB-C cable from the camera. Wait a full 30 seconds, don't rush it. Plug it back in. The v4 takes about 45 seconds to fully boot. When the light stops spinning and the video feed appears in the app, check the audio. This clears any temporary glitch in the microphone driver or the audio chipset.
Power cycling also refreshes the Wi-Fi connection. Since the v4 only runs on 2.4 GHz, a slight network hiccup can silence the mic while the video stream keeps going. A full reboot handles that.
Check for a Firmware Update
Wyze pushes firmware updates through the app regularly. Open the Wyze app, tap Account (bottom right), then Firmware Update. If a pending update shows for your v4, install it. I've seen mic issues fixed by firmware patches that addressed audio codec handling on the v4's 2024 hardware.
You can also check your camera's current firmware by going to the device settings: tap the gear icon on the live view, then Device Info. Compare it with the latest version listed on Wyze's release notes.
Test the Microphone With Your Phone's Voice Recorder
If the camera still shows video but no audio, pull out a separate phone (or the same phone with a different app) and use a simple voice recorder to record what the v4 is hearing. This isolates the problem. If the recorder picks up sound, the mic is working, the issue is in the app or network. If the recorder gets silence too, the mic hardware may be at fault.
For a hardware microphone failure, the v4 doesn't have a user-replaceable part. But before giving up, try the factory reset below. I've seen a reset bring a seemingly dead mic back to life.
Factory Reset the Wyze Cam v4
If nothing else has worked, reset the camera to out-of-box state. Locate the small setup button on the bottom of the v4. Press and hold it for a full 10 seconds. The camera's status light will flash rapidly, then restart. Wait about a minute for it to fully reboot. After the reset, you'll need to re-pair the camera in the Wyze app, select "Add Device" and follow the setup prompts. The reset wipes all settings, including any audio profile corruption that might have silenced the mic.
This is also a good moment to check if your v4 is enrolled in the Cam Plus trial. Cam Plus unlocks AI Person Detection and extended cloud storage, but it doesn't affect audio. The subscription is purely for advanced detection features.
Check for a Wyze Cloud Outage
Wyze has had cloud outages in the past that knocked out audio streaming while video continued partially. If your video is stable but audio is totally silent across multiple cameras, and the app shows a banner or the microphone icon stays grayed out, check Wyze's status page or social media. There's nothing you can fix on your end during an outage; the service team pushes a fix server-side. Usually audio comes back within a few hours.
Try a Different Network Environment
Since the v4 is 2.4 GHz only, a congested Wi-Fi channel can drop audio packets even when video stays smooth. If you have a dual-band router, make sure the 2.4 GHz network is on a clean channel. You can temporarily test by taking the camera close to the router or even tethering it to a mobile hotspot. If audio works on a different network, the issue is your home Wi-Fi, not the camera's mic.
One last thing: if you're using a microSD card for local recording, take it out and test without it. A corrupted SD card has been known to trigger audio glitches on the v4. If audio returns without the card, reformat the card in the app: Device Settings > Manage SD Card > Format. That clears any file system issues interfering with the audio subsystem.
