Setting up the Sonim XP3, XP3plus, and XP5s devices
The Sonim XP3, XP3plus, and XP5s do not support the Google Play store, so you won't be able to download Zello onto them directly. Additionally, as a security feature, only apps that are pre-approved by Sonim will run on the XP3 and XP5s. If you attempt to download an app without a Sonim signature, the installation may fail, or it may not work properly.
To ensure that Zello will install and work properly, you must use the most recently signed .apk file with Sonim's signature from our website. Here is the link to this file. Copy the download link and send it as an email or text message to your device for ease of download: https://zello.com/data/android/latest/zello-sonim.apk
Please note that the .apk currently supports Android 5.0 and higher.
During installation, you may see a screen requesting for you to verify that you want to install an app downloaded through your browser. Accept this request in order to proceed with the installation.
After installation, sign in with your Zello Work network name, username, and password.