1. Home
  2. 💼 Business
  3. DUSphone
DUSphone

DUSphone

Encrypted calls via dus.net

0 ratings
4 reviews
💼 Business
🔧 Utilities
Free

Details

Released
February 9, 2012
Updated
October 28, 2026

Features

Developer

dus.net GmbH
✨Promote your app ✨
DUSphone screenshot #1 for iPhone
DUSphone screenshot #2 for iPhone
DUSphone screenshot #3 for iPhone
DUSphone screenshot #4 for iPhone
DUSphone screenshot #5 for iPhone
iphone
ipad
⭐4
Reviews↘︎
🔄4+ apps
Alternatives↘︎
❓8 answered
FAQ↘︎
📦~ in 5 days
Updates frequency↘︎
🖼️Get Icon
Icons↘︎

About

This app provides encrypted, high-definition voice calls for your business line directly from your smartphone. It integrates seamlessly with your device for reliable incoming calls and offers features like caller ID management and multi-account support. Setup is quick and secure via QR code scanning.

✓Encrypted calls (TLS/SRTP)
✓HD voice quality (Opus codec)
✓Native call integration (CallKit)
✓Reliable incoming calls (VoIP push)
✓QR code setup
✓Multi-account management
✓Caller ID management
Show original description
+1

What's New in DUSphone

7.3.8

October 28, 2026

• Calls at your ear: the screen now turns off as soon as the phone is at your ear, and audio plays through the earpiece. • Bug fixes and improvements.

User reviews

Most RecentHighest RatedLowest Rated

Medium great

The app is a few years old, but so far it has done its job.

Since it is built on old technology iOS now shows this disclaimer:

These apps may slow down your iPhone and will not work with future version of iOS if they are not updated. If no update is available, contact the app developer for more information.

I am hoping there will be an update soon, because I like having this app available when I want to use my dus.net account on my iOS device.
Show more
Zzepharius_again

Crashes immediately

Doesn't work. Why is this in the App Store?
MMatthi

So stupid!

Once you get it, as soon as you open it, the thing keeps giving you reminders that say something like your account isn't credible anymore...I JUST GOT IT!!! Then when you go to call someone...EVERY NUMBER IS SUPPOSEDLY FAKE!!!!
HHannyBear99

SUSphone

Stinks :(
SSamuraiParkour

Developer apps

SIPhone
SIPhone

VoIP calling for Sipona

💼 Business
Free
See developer apps

FAQ

Does DUSphone have ads?

No, DUSphone is privacy-friendly and does not contain advertisements. It is built on open-source software and prioritizes user privacy.

How do I set up DUSphone?

Setup is fast and secure by scanning a QR code from your dus.net customer center. This eliminates the need to manually type in passwords.

What devices does DUSphone support?

DUSphone is available for iPhone and iPad devices. It requires a VoIP line at dus.net to function.

Can I make calls to regular phone numbers with DUSphone?

Yes, you can make encrypted, HD-quality calls to both landlines and mobile numbers using your dus.net line.

How reliable are incoming calls with DUSphone?

Incoming calls ring reliably even when your iPhone is locked or the app is closed, thanks to VoIP push notifications.

What is the age rating for DUSphone?

DUSphone has an age rating of 4+, making it suitable for a wide range of users.

How often is DUSphone updated?

The latest version is 7.3.8, and the app was last updated on October 28, 2026. Updates ensure continued reliability and feature enhancements.

Can I manage multiple business lines with DUSphone?

Yes, DUSphone supports multi-account management, allowing you to manage several lines at once and keep track of your prepaid balance.