About this app

OpusTel the phone App protecting You and Your friends against global mass surveillance.

Swiss-based OpusTel is a trademark of Telephoenix AG / Ltd.

OpusTel is the mobile phone for Android (and iOS) permitting one to use a real Swiss telephone number, e.g. 0041 41 520 60 00. It allows one to make and to receive secure VoIP calls from any Android device using 4G/3G/UMTS/Wi-Fi Internet connectivity. It was developed with a focus on Swiss privacy, superior audio quality, and low rates, with landline telephone-number tariffs. For more information, see https://opustel.ch/en/home
Those interested in OpusTel may purchase the right to use a Perk (Voucher) from crowd-funding Indiegogo https://indiegogo.com

Features:
1. Encrypted incoming and outgoing calls
2. HD high-definition audio quality with Opus and G722 codecs
3. Free global calls from OpusTel to OpusTel App
4. Low-cost global landline tariffs (typically 2.9 U.S. cents / 2.9 Swiss Rappen per minute)
5. Easy transfer calls to any telephone number (attended or direct)
6. Ability to record incoming and outgoing calls
7. Conference calls
8. Automatic language selection (localized to 15 languages like EN, DE, FR, IT)
9. Address book integration same as for mobile number

More information: https://opustel.ch/en/home

New features

Added support for block UDP traffic from unknown addresses
Improved multiple languages translations
Improved call focus after adding/ transferring a call
Fixed contact matching issue
Fixed issue with updating contacts in the message thread
Fixed missing avatars in the messaging tab

App Permissions

Allows applications to access information about networks.
Marker permission for applications that wish to access notification policy.
Allows the app to answer an incoming phone call.
Allows an application to receive the ACTION_BOOT_COMPLETED that is broadcast after the system finishes booting.
Allows an application to record audio.
Permission an application must hold in order to use ACTION_REQUEST_IGNORE_BATTERY_OPTIMIZATIONS.
Allows an app to create windows using the type TYPE_APPLICATION_OVERLAY, shown on top of all other apps.
This constant was deprecated in API level 21. No longer enforced.
Allows access to the list of accounts in the Accounts Service.
Allows applications to read the sync settings.
Allows applications to write the sync settings.
Required to be able to access the camera device.
Allows access to the vibrator.
Allows an application to read the user's contacts data.
Allows an application to write the user's contacts data.
Allows an application to record audio.
Allows read only access to phone state, including the phone number of the device, current cellular network information, the status of any ongoing calls, and a list of any PhoneAccounts registered on the device.
Allows an application to initiate a phone call without going through the Dialer user interface for the user to confirm the call.
Allows applications to connect to paired bluetooth devices.
Allows an application to broadcast sticky intents.
Allows an application to modify global audio settings.
Allows a calling application which manages it own calls through the self-managed ConnectionService APIs.
Allows applications to perform I/O operations over NFC.
Allows applications to open network sockets.
Allows using PowerManager WakeLocks to keep processor from sleeping or screen from dimming.
Allows applications to change network connectivity state.
Allows applications to access information about Wi-Fi networks.