o2 Voicemail

o2 Voicemail - A voicemail solution for Android

Telefónica Germany GmbH & Co. OHG · com.unisys.visualvoicemail

5.0 out of 5 (1 rating) 10K+ downloads v20.340.0000 6.2 MB Android 6.0+ PEGI 3 · Everyone

Download APK 6.2 MB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v20.340.0000 (12)
Updated: Jan 2, 2026 (9 months ago)
APK size: 6.2 MB
Requires: Android 6.0+ (API 23)
CPU support: Any (no native code)
Category: Communication (app)
Listed since: Oct 24, 2022 (at least)
Permissions: 27 (12 sensitive)
Website: o2.de
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

o2 Voicemail is an app by Telefónica Germany GmbH & Co. OHG in the Communication category, listed since at least October 2022. It has no native code, so it runs on any Android processor.

Since version 20.331.0000, the APK grew from 5.5 MB to 6.2 MB. It asks for 27 permissions, 12 of them sensitive, including record audio, read contacts and send sms. Compared with version 20.331.0000, it adds 3 new permissions: “Bluetooth connect”, “Read shared storage” and “Show notifications”.

What's new in v20.340.0000

Dieses Update behebt ein Problem beim Hochladen der Begrüßung sowie weitere Bugfixes.

Description

From the listing uploaded by “appupdater”.

O2 has replaced the voicemail system with a newer platform. The new platform offers an improved Visual Voicemail function and therefore it is necessary to install this new Visual Voicemail Client. This new client is not compatible with the old voicemail system. The old o2 Voicemail client will work until the mailbox is migrated from the old to the new system. After the mailbox has been migrated to the new system, the o2 Voicemail users will be informed that they have to install this client in order to continue using the service. When starting the VVM client for the first time, the mobile phone must be logged into the o2 network. In order to be able to use the VVM client, the client must register with Voicemail. This happens automatically after the client has been started and the cell phone is logged into the o2 network. Important: In order for the o2 Voicemail app to work properly, it is necessary to deactivate the energy-saving mode for this app !!! If this is not done, new messages will be displayed with an enormous delay. o2 Voicemail is a voicemail solution for Android. With the help of the o2 Voicemail app, mailbox messages are automatically loaded into the memory of your own mobile phone. The called subscriber is informed of the missed call on the display. The number of existing messages is displayed on the start screen of the mobile phone. The app offers the following features: - Extended mailbox functionalities - Listen to and manage messages - Calling back contacts - Sending SMS - Manage, activate and record greetings (announcements) The app is available to all o2 contract customers. o2 prepaid and third-party providers are currently not supported.

Version history

2 versions are listed, going back to v20.331.0000.

v20.340.0000 LATEST Jan 2, 2026 6.2 MB TRUSTED v20.331.0000 Jun 12, 2024 5.5 MB TRUSTED

All 2 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Jan 2, 2026.
Certificate issued to “Telefonica Germany GmbH & Co. OHG” This is the certificate of the Google Play version.
Same certificate as the other version checked

Store checks and file details

Developer signature verified Jan 2, 2026
Validated against Google Play Jan 2, 2026
Signed byCN=www.telefonica.de, OU=Telefonica Germany, O=Telefonica Germany GmbH & Co. OHG, L=Munich, ST=Bavaria, C=de
Signing certificate (SHA-1)D0:2F:A6:8E:5E:AE:A0:94:50:90:8B:13:DB:BE:C2:6A:D0:51:97:A5
File MD5abf3bc75aa136709a3e8a500e0133c3b
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 (1 other version compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (27)

o2 Voicemail requests 27 permissions, 12 of them sensitive.

Approximate location Sensitive android.permission.ACCESS_COARSE_LOCATION
Bluetooth connect Sensitive android.permission.BLUETOOTH_CONNECT
Call phone Sensitive android.permission.CALL_PHONE
Find accounts on the device Sensitive android.permission.GET_ACCOUNTS
Modify shared storage Sensitive android.permission.WRITE_EXTERNAL_STORAGE
Read contacts Sensitive android.permission.READ_CONTACTS
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
Receive sms Sensitive android.permission.RECEIVE_SMS
Record audio (microphone) Sensitive android.permission.RECORD_AUDIO
Send sms Sensitive android.permission.SEND_SMS
Async jobs service (custom) com.unisys.visualvoicemail.ASYNC_JOBS_SERVICE
Bluetooth android.permission.BLUETOOTH
Control vibration android.permission.VIBRATE
Full network access android.permission.INTERNET
Google Play install referrer com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
Imap service (custom) com.unisys.visualvoicemail.IMAP_SERVICE
Internal broadcast protection (app-defined) com.unisys.visualvoicemail.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Modify audio settings android.permission.MODIFY_AUDIO_SETTINGS
Prevent the device from sleeping android.permission.WAKE_LOCK
Push messaging (app-defined) com.unisys.visualvoicemail.permission.C2D_MESSAGE
Read logs android.permission.READ_LOGS
Receive push notifications com.google.android.c2dm.permission.RECEIVE
Show notifications android.permission.POST_NOTIFICATIONS
View Wi-Fi connections android.permission.ACCESS_WIFI_STATE
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Basic touch input android.hardware.faketouch
Location android.hardware.location

o2 Voicemail APK: questions and answers

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 o2 Voicemail 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 other version checked. After downloading, check that the file's MD5 is abf3bc75aa136709a3e8a500e0133c3b.