If you can hear a visitor through Veno Pro on your iPhone, but the visitor cannot hear you, check the Lockin app's microphone permission first. A working incoming audio path does not prove that iPhone has allowed the app to send microphone audio. Keep the door locked, use a controlled conversation with someone you trust, and check the phone microphone before changing lock credentials or resetting the smart lock.
What this Veno Pro microphone problem usually means
Veno Pro is designed as a video smart lock with a two-way doorbell, and Lockin's troubleshooting material describes two-way talk through the app. In this specific one-way symptom, the visitor's audio reaches the phone but the phone's outgoing microphone path is not reaching the visitor. That can be an iPhone permission or phone-microphone issue; it is not proof that the Veno Pro speaker or the lock's access functions have failed.
This guide is for the question “Lockin Veno Pro microphone not working iPhone” when incoming visitor audio still works. It does not diagnose every possible Wi-Fi, app, firmware, Bluetooth, or hardware fault, and it does not assume a microphone permission caused the problem.
Check iPhone microphone permission for the Lockin app
- End the test conversation.
- On the iPhone, open Settings.
- Tap Privacy & Security, then Microphone.
- Find the Lockin app and make sure its microphone access is enabled.
- Start a new controlled Veno Pro doorbell conversation while the door remains locked.
Apple's current iPhone microphone guidance uses this same app-specific path. If the Lockin app is already allowed to use the microphone, or it does not appear in the list, Apple recommends contacting the app developer. Do not keep toggling unrelated lock settings as a substitute for this check.
Test the iPhone microphone outside the Lockin app
The next step separates an iPhone microphone problem from an app-specific problem. Apple recommends two recordings:
- Voice Memos: record while speaking at the bottom of the iPhone, then play it back. Your voice should be clear.
- Camera: record a video while speaking at the top of the iPhone, switch to the other camera, and record another video. Play both back and listen for clear speech.
Before recording, remove a case or screen protector that could cover a microphone opening and clear visible debris from the openings. These tests do not test Veno Pro itself; they only tell you whether the iPhone can capture speech in Apple's own apps.
How to read the result
| Test result | What it suggests | Next action |
|---|---|---|
| Voice Memos and both camera recordings are clear, but the visitor still cannot hear you | The phone microphone works in Apple's apps; the issue may be specific to the Lockin app, its permission state, the current conversation path, or another connection condition | Confirm Microphone permission again, then contact Lockin if the problem remains |
| One or more Apple recordings are unclear | The phone itself may have a microphone opening, case, or hardware issue | Remove obstructions and follow Apple's service guidance if the recordings remain unclear |
| The Lockin app is missing from Settings > Privacy & Security > Microphone | iOS has not presented a usable permission entry for the app, or the app needs developer support | Contact Lockin support rather than resetting Veno Pro access credentials |
| The visitor cannot hear you, and incoming visitor audio also stops working | This is no longer the narrow outgoing-microphone symptom covered here | Check the current Veno Pro manual and Lockin support resources for the broader connection problem |
Retest without changing lock access
After the permission and phone tests, place a controlled call through Veno Pro again. Ask the other person to confirm whether they hear your voice, and keep the door locked for the test. If you have more than one authorized iPhone user, a second phone can help show whether the symptom follows one phone or the Veno Pro setup, but it is not a substitute for Lockin's current support instructions.
Do not delete palm-vein profiles, fingerprints, PINs, or household access just to test an iPhone microphone. Those credentials control entry; they are unrelated to whether the phone can send speech during a doorbell conversation.
When to contact Lockin
Contact Lockin support if all of the following are true:
- the Lockin app has microphone permission;
- Voice Memos and the Camera tests are clear;
- a controlled Veno Pro conversation still lets you hear the visitor but not the other way around; and
- you have not found a visible obstruction at the iPhone microphone openings.
Include the iPhone model and iOS version, the Lockin app version if available, whether the app appears under Microphone settings, and the results of the Voice Memos and Camera tests. Avoid sending access codes or biometric information. Lockin's Veno Pro product page lists lifetime customer support and the support email address support@lockin.com; use the current contact route if the site presents a different one.
Bottom line
For a Lockin Veno Pro microphone not working iPhone symptom where you can still hear the visitor, start with Settings > Privacy & Security > Microphone and enable the Lockin app. Then test the iPhone with Voice Memos and Camera. If Apple's tests are clear but the Veno Pro conversation is still one-way, contact Lockin; microphone permission is a focused diagnostic check, not a diagnosis of every Veno Pro audio fault.
For model details, two-way doorbell context, and current conditions, see the Veno Pro product page, the Lockin FAQ, and the Lockin user-manual library. For the iPhone recording and permission steps, see Apple's microphone guidance.