PBX Call Assist Mobile

Comprehensive UC app as a mobile companion to PBX Call Assist on Windows & macOS

Auerswald GmbH & Co. KG · com.estos.apps.android.auerswald

Not rated yet 1K+ downloads v2026.05.20 (260520.143626.3) 65.8 MB Android 11+ PEGI 3 · Everyone

Download APK 65.8 MB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v2026.05.20 (260520.143626.3) (26052012)
Updated: Jun 28, 2026 (3 months ago)
APK size: 65.8 MB
Requires: Android 11+ (API 30)
CPU support: x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit
Category: Communication (app)
Listed since: Jul 9, 2021 (at least)
Permissions: 39 (14 sensitive)
Website: auerswald.de/en
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

PBX Call Assist Mobile is an app by Auerswald GmbH & Co. KG in the Communication category, listed since at least July 2021. It includes native code for x86 32-bit, x86 64-bit, ARM 32-bit and ARM 64-bit, so it runs on practically every phone.

Since version 2025.07.08 (250708.152443.3), the APK grew from 46.1 MB to 65.8 MB and the minimum Android version rose from 8.0 to 11. It asks for 39 permissions, 14 of them sensitive, including camera, record audio and read contacts. Compared with version 2025.11.11 (251111.175144.3), it adds 1 new permission: “Foreground service phone call”.

What's new in v2026.05.20 (260520.143626.3)

Various Fixes

Description

From the listing uploaded by “appupdater”.

PBX Call Assist Mobile is a Unified Communications & CTI software that enables you to seamlessly switch your complete business communication between office and home office. To be able to use the app, you need a functional installation of PBX Call Assist and an Auerswald/FONtevo ICT system (desktop application), in which you have already been set up and activated as a user  With PBX Call Assist Mobile, users can access selected and proven features of the Unified Communication & CTI software PBX Call Assist anywhere at any time. Important data on business contacts and information on the availability of colleagues enable efficient business communication while on the move. Functions such as video chat or the integration of softphone functions (SIP) add additional value to the app. The most important performance features at a glance: Fixed Mobile Convergence – use your office phone connection when you are on the move. One Number Concept - always available at the same phone number, whether in the office or on the road Quick access to business contacts and all communication functions Clear and detailed last connections log Chat for quick and secure exchange of messages Connection to common CRM, ERP and industry applications. Instant access to most relevant business/customer information. Communicate more personally: by audio or video chat! Instant Messaging and presence management Always efficiently organized with a personal call journal In the first 45 days you can test PBX Call Assist once without any restrictions.

Version history

4 versions are listed, going back to v2025.07.08 (250708.152443.3). Since v2025.10.14 (251014.184754.3) it requires Android 11+.

v2026.05.20 (260520.143626.3) LATEST Jun 28, 2026 65.8 MB TRUSTED v2025.11.11 (251111.175144.3) Feb 4, 2026 80.7 MB TRUSTED v2025.10.14 (251014.184754.3) Dec 13, 2025 80.1 MB TRUSTED v2025.07.08 (250708.152443.3) Sep 14, 2025 46.1 MB TRUSTED

All 4 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Jun 28, 2026.
Certificate from Google Play App Signing Google keeps the signing key for the developer, so the certificate carries Google's name.
Same certificate as the 2 other versions checked

Store checks and file details

Developer signature verified Jun 28, 2026
Validated against Google Play Jun 28, 2026
Signed byCN=Android, OU=Android, O=Google Inc., L=Mountain View, ST=California, C=US
Signing certificate (SHA-1)74:F7:0F:0F:22:50:9A:F0:AE:8A:AF:0A:00:1B:FA:9C:96:A8:CC:9C
File MD583a9a99322a51074487f20b4e7594e99
Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (2 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (39)

PBX Call Assist Mobile requests 39 permissions, 14 of them sensitive.

Call phone Sensitive android.permission.CALL_PHONE
Camera Sensitive android.permission.CAMERA
Display over other apps Sensitive android.permission.SYSTEM_ALERT_WINDOW
Find accounts on the device Sensitive android.permission.GET_ACCOUNTS
Read contacts Sensitive android.permission.READ_CONTACTS
Read media audio Sensitive android.permission.READ_MEDIA_AUDIO
Read media images Sensitive android.permission.READ_MEDIA_IMAGES
Read media video Sensitive android.permission.READ_MEDIA_VIDEO
Read media visual user selected Sensitive android.permission.READ_MEDIA_VISUAL_USER_SELECTED
Read phone numbers Sensitive android.permission.READ_PHONE_NUMBERS
Read phone status and identity Sensitive android.permission.READ_PHONE_STATE
Read shared storage Sensitive android.permission.READ_EXTERNAL_STORAGE
Record audio (microphone) Sensitive android.permission.RECORD_AUDIO
Write contacts Sensitive android.permission.WRITE_CONTACTS
Access notification policy android.permission.ACCESS_NOTIFICATION_POLICY
Bluetooth android.permission.BLUETOOTH
Control vibration android.permission.VIBRATE
Disable keyguard android.permission.DISABLE_KEYGUARD
Flashlight android.permission.FLASHLIGHT
Foreground service camera android.permission.FOREGROUND_SERVICE_CAMERA
Foreground service data sync android.permission.FOREGROUND_SERVICE_DATA_SYNC
Foreground service microphone android.permission.FOREGROUND_SERVICE_MICROPHONE
Foreground service phone call android.permission.FOREGROUND_SERVICE_PHONE_CALL
Full network access android.permission.INTERNET
Internal broadcast protection (app-defined) com.estos.apps.android.auerswald.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Manage own calls android.permission.MANAGE_OWN_CALLS
Modify audio settings android.permission.MODIFY_AUDIO_SETTINGS
Prevent the device from sleeping android.permission.WAKE_LOCK
Push messaging (app-defined) com.google.android.c2dm.permission.C2D_MESSAGE
Receive push notifications com.google.android.c2dm.permission.RECEIVE
Run at startup android.permission.RECEIVE_BOOT_COMPLETED
Run foreground services android.permission.FOREGROUND_SERVICE
Show notifications android.permission.POST_NOTIFICATIONS
Use biometric hardware android.permission.USE_BIOMETRIC
Use fingerprint hardware android.permission.USE_FINGERPRINT
Use full screen intent android.permission.USE_FULL_SCREEN_INTENT
View Wi-Fi connections android.permission.ACCESS_WIFI_STATE
View network connections android.permission.ACCESS_NETWORK_STATE
Write logs android.permission.WRITE_LOGS

Required hardware & features

Camera android.hardware.camera
Basic touch input android.hardware.faketouch
Wi-Fi android.hardware.wifi

PBX Call Assist Mobile APK: questions and answers

Is there a version of PBX Call Assist Mobile for older Android phones?

The current version needs Android 11 or later. Version 2025.07.08 (250708.152443.3) is the newest listed build that installs on Android 8.0 and later. Get version 2025.07.08 (250708.152443.3) · All versions

Can I install this APK over the version I already have?

Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.

Is the PBX Call Assist Mobile APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. It is signed with the same certificate as the 2 other versions checked. After downloading, check that the file's MD5 is 83a9a99322a51074487f20b4e7594e99.