Android Settings Guide

  • Updated
Zello Paid support

To access your options, select “Options” from the Android Menu button.

Note: This article was created using Zello 4.118.0.


Pencil Icon: 

  • Display Name: How other users see your name in the Zello app.
  • Update Picture: Change profile picture. May not be possible based on network configuration. 

Change Password: 

  • Current password: Enter current password.
  • New password: Enter new password in and select “CHANGE NOW” to save the new password.


Manage Zello Accounts: You can use this to switch back and forth between different Zello accounts that you have logged into on the device. 

Add account: Add a Zello Work account or a Zello consumer account, if you use Zello outside of your network.


Change the look of your Zello Work app.


Language: Choose your language. Zello will default to your phone's language setting. 

Theme: Change the interface. Options are black (dark) and white (light).

Font Size: Increase the size of the font used in the Zello app.

Lock screen orientation: Toggle on to prevent the screen from turning when moving the phone from landscape to portrait mode and vice versa.


Adjust volume on incoming messages: Turns up the volume when a new message is received after 10 minutes or longer with no activity. Learn more here. 

Playback amplifier (dB): Move the slider to the left to make playback audio softer or to the right to make playback audio louder.

Recording amplifier (dB): Move the slider to the left to make recordings softer or to the right to make recordings louder. 

Noise Suppression: Cancel out background noise.

Apply Audio Mode only when a message is sent or played:

Legacy Bluetooth mode:

Push-to-talk button

This is where you can program the PTT key. On the first screen, you will see options for the Screen Button, PTT Headset (if enabled), the VOX button, and any other device with a PTT button that you may have paired to the device. Click here to learn more about pairing a device with PTT functionality.  

Screen Button Settings: 

  • Screen button action: Configure the onscreen PTT button.
  • Select “Hold to talk” to press and hold the button until you finish talking.
  • Select “Toggle” to press once to talk and press again when you finish talking.
  • Select “Disabled” to use only external PTT buttons.

PTT Headset Settings:

  • Push-to-talk button action: Configure an external hardware PTT button.
  • Select “Hold to talk” to press and hold the button until you finish talking.
  • Select “Toggle” to press once to talk and press again when you finish talking.
  • Handle headset button in the background when possible: Allows you to use headset keys to interact with Zello even when the app runs in the background or the screen is locked. Learn more about Zello compatible headsets.
  • Button Contact: Use this to map a specific contact or channel to the button. Learn more here.

VOX Button:

  • Show button on the talk screen: Enables Voice-Over activation on the device. Learn more here. 
  • Keep VOX enabled when screen is locked: Allows you to send messages using VOX when the screen is locked. 
  • Activation Sensitivity: Allows you to set the sensitivity level (Low, Moderate, High, Extreme) to activate transmissions. Low would allow faint noises to trigger a transmission, while Extreme would only allow very loud noises to trigger a transmission. 
  • Tailor activation to the human voice: Allows you to set the sensitivity level (Low, Moderate, High, Extreme) to activate an algorithm that distinguishes other noises (a mouse click, wind, etc) from the human voice. 
  • Activation time (ms): Time in milliseconds that VOX will start transmitting a message after it picks up noise. Reducing the threshold increases the chance of picking up random noises. 
  • Deactivation time (ms): Time in milliseconds it takes VOX to stop transmitting after noise stops. Reducing the threshold may lead to a premature end to a message.


Start Zello when phone powers on: Zello automatically starts running when you turn on the device.

Automatically activate a Contact: Choose between “When a message is received”, “When a message is received in the background”, or “Never”. 

Show on incoming message: Toggling on this setting will bring the Zello app to the foreground (if it is not already) when a new audio message is received. 

And turn on the screen: Zello will unlock the phone and bring the app to the foreground when a new audio message is received. 

Set Zello status to Busy when phone is in silent mode: When phone call volume is set to Silent, Zello automatically changes your status to Busy. Incoming messages go to Recents. Learn more here

Set Zello status to Available when PTT button is pressed: If your device is in Busy or Solo Status, then sending an audio message will automatically change device status to “available”. 

Save Photos Taken with the camera: Toggle on to be able to access photos taken with Zello’s camera in your device’s camera roll.

Use system camera to take photos: Toggle on to use your device’s camera app instead of the Zello camera. 

Enable Push notifications: 

Start on incoming voice message: 

Wake up the Device to Keep Zello connected: When toggled on, keeps Zello from getting shut off in the background.


Alert volume (beta): use the scale to configure the volume of notifications. 

Push-to-talk alerts: 

  • Ready to send beep (beta): Plays when the user presses the talk button to begin the message.
  • Talk button-up beep (beta): Plays at the end of the message.
  • Incoming message beep: Plays at the beginning of an incoming voice message when the recipient’s status is Available. 
  • End of incoming message beep (beta): Plays at the end of an incoming voice message. 
  • Delivery delayed beep (beta): Plays when the message is not able to be delivered immediately. Learn more

Chat Alerts: 

  • New Chat message: 
  • Text Alert:  Plays when the user receives a text from another user.

Other Alerts: 

  • Default Contact Selected: 
  • Error: An error has occurred. Some possible errors could be: 
    • Disabled microphone.
    • Channel is busy when you push the PTT button. 
    • You push the PTT and can’t connect with your contact.
  • Connection Lost: Plays when the user becomes disconnected from the internet, resulting in a loss of connection to Zello.
  • Connection Restored: Plays when internet connection has been restored. 

New Conversations: 

  • Enable new conversation notifications (beta): When enabled, notifications will include sound, vibration, and a visual notification anytime someone starts a new conversation with you.
  • Sound: Toggle on in order to receive an audio notification at the beginning of a new conversation.
  • Vibration (beta): Toggle on in order for your device to vibrate at the beginning of the new conversation. 

Visual Alerts: 

  • Show toasts while in the background: 
  • System notifications: Choose which types of messages will result in app notifications. 


Automatically delete messages: Use the dropdown list to select how long you would like to store messages on your device. Choose “never” to turn this setting off. 

Voice storage size: Amount of phone storage in Bytes contributed to Voice message storage (16MB to 1GB). Once storage capacity is reached, the oldest messages are deleted first. 

Image Storage Size: Number of images that will be stored on the device (100-10,000 images). Once storage capacity is reached, the oldest messages are deleted first. 

Clear all: Instantly deletes all stored messages on your device from the Zello app. 


Help: Links you to the Zello Work Support Center

Report a Problem: Use to send in a log of device activity to Zello support. If you are experiencing an issue, reach out to, as we are not notified automatically when a problem report is sent. 

Adjust Permissions: Update Zello’s permissions from your phone settings. 

Advanced Settings:

  • Enable Asynchronous message delivery: Queues missed messages while in 'Standby' status and autoplays once the Internet connection is back and status is 'Available'. 
  • Enable Call pre-setup: 
  • Keep alive interval: This is the polling time between the app and the service. A longer time polling time uses less bandwidth and improves battery life. A shorter polling time keeps the user status display current and may improve connectivity. For most, the default value should work fine. Options are “s” for seconds and “m” for minutes. Learn More 
  • Use TCP only: Using TCP instead of UDP speeds sign in and improves connection reliability, but it may delay receiving messages in real-time. 
  • Enable TLS: TLS is a security protocol. This is enabled by default and disabling is not recommended. Learn more 
  • Disable Analytics:  

Third Party Info: Contains legal information related to the Zello application.