DUSphone - VoIP

Content rating
Everyone
100+
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Content rating
Everyone
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About this app

dus.net GmbH proudly presents DUSphone – the VoIP softphone for your dus.net line. Make encrypted, HD-quality calls straight from your Android phone: to landlines, mobile numbers, and other dus.net lines.

All you need is a dus.net plan – ready in minutes, including a starting balance of €0.45 for your first calls. See the plans at www.dus.net.

Your benefits:
• Encrypted calling over TLS and SRTP – your conversations stay private
• HD voice quality powered by the Opus codec
• Native call integration on Android – incoming calls appear on your lock screen like regular calls
• Always reachable: incoming calls ring reliably, even when your device is locked or the app is closed (push)
• Call landlines and mobile numbers – and receive calls on your dus.net number
• Fast setup by scanning a QR code from the customer center – no password to type
• Manage several lines at once (multi-account)
• Company directory and device contacts – callers are matched by name
• Keep an eye on your prepaid balance in euros at any time
• Show or hide your caller ID per call (call anonymously)
• In-call DTMF, hold, speaker, and call history

Privacy-friendly: no tracking, no ads. DUSphone is built on open-source software (baresip); the open-source licenses can be viewed in the app.

Requirement: DUSphone needs a VoIP line at dus.net. More information at www.dus.net.
Make encrypted HD calls over your dus.net line on Android
Updated on
Sep 9, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • No data collected
    Learn more about how developers declare collection
  • Data is encrypted in transit
  • You can request that data be deleted

What’s new

• Sign-in: the QR code from the customer center is now the default; username and password remain as the exception.
• QR scanner finally in portrait mode.
• Diagnostic log only on request for 60 minutes instead of permanently.
• Line credentials no longer end up in the device backup (prevents a crash after switching devices).
• Vibration on incoming calls.
Content rating
Everyone
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App support

Phone number
+4921123704140
About the developer
dus.net GmbH
info@dus.net
Kaiserswerther Str. 215 40474 Düsseldorf Germany
+49 211 23704140