Support Center / Using Your Phone
The Signal Mobile App — Your Extension in Your Pocket
The mobile app registers your phone as another device on your extension: business calls ring your pocket, and calls you place show your business caller ID, not your personal cell number. Personal and work calling stay fully separated on one device.
Setup
- Install the Signal app from the App Store or Google Play.
- Sign in with your portal credentials.
- Allow notifications — inbound calls arrive as push notifications; denying this is the #1 cause of "the app never rings."
- Place a test call and confirm the recipient sees your business number.
The settings that decide reliability
Setting | Why |
|---|---|
Notifications allowed | Inbound ringing depends on push |
Battery optimization excluded (Android) | Aggressive battery savers kill background ringing |
Microphone permission | Obvious, and still occasionally missed |
Wi-Fi calling preference | Prefer Wi-Fi where available; LTE/5G works but varies |
Boundaries worth setting
- The app rings whenever your extension rings — pair it with your organization's after-hours expectations, or sign out after hours.
- Lost phone? Your administrator resets the extension's SIP password and the app deauthenticates everywhere.
Quick fixes
- Never rings: notifications, then battery optimization, in that order.
- Choppy on cellular: known-weak coverage areas will be choppy; Wi-Fi when available.
- Wrong caller ID: the app uses the extension's configured outbound caller ID — ask your admin to adjust.
Related articles
Last reviewed August 6, 2026. Still stuck? Contact Signal Support from your portal — include what you expected, what happened instead, and one example phone number or extension.