Smart PBX app icon

Smart PBX

The Smart PBX can make smart phones internal, free to make location free and free extension calls.

NTT Communications Corporation · com.ntt.voip.android.smartpbx

5.0 (1 rating) 100K+ downloads v3.3.2 34.6 MB Android 11+ PEGI 3 · Everyone

Download APK 34.6 MB All versions
  • Signature matches the Google Play version Details

At a glance

Latest version
v3.3.2 (332)
Updated
Jun 30, 2026 (3 months ago)
APK size
34.6 MB
Requires
Android 11+ (API 30)
CPU support
ARM 32-bit, ARM 64-bit
Category
Business (app)
Listed since
Feb 15, 2021 (at least)
Permissions
40 (12 sensitive)
Website
ntt.com/a_smartpbx
Developer contact
[email protected]
Privacy
Developer's privacy policy

About this APK

Smart PBX is an app by NTT Communications Corporation in the Business category, listed since at least February 2021. It includes native code for ARM 32-bit and ARM 64-bit, so it runs on practically every phone.

Since version 2.9.1, the APK grew from 14 MB to 34.6 MB and the minimum Android version rose from 7.0 to 11. It asks for 40 permissions, 12 of them sensitive, including precise location, location in the background and record audio. Compared with version 3.3.1, it adds 2 new permissions: “Detect screen capture” and “Detect screen recording”. The app can read the advertising ID that ad and analytics services use.

What's new in v3.3.2

・一部不具合を修正しました。 ・軽微な修正を行いました。 （2026/6/30） ・一部不具合を修正しました。 （2026/6/25） ・一部不具合を修正しました。 ・軽微な修正を行いました。 （2026/6/23） ・オフィスリンク連携機能を追加しました。 （2026/2/24） ・軽微な修正を行いました。 （2025/11/26） ・軽微な修正を行いました。 （2025/8/27） ・軽微な修正を行いました。 （2025/6/25） ・Android15に対応しました。 ・軽微な修正を行いました。 （2025/5/21） ・一部不具合を修正しました。 ・軽微な修正を行いました。 （2025/3/25） ・通話中の各種機能ボタンの位置を変更しました。 ・電話帳画面に検索バーを追加しました。 ・一部不具合を修正しました。 ・軽微な修正を行いました。 （2025/1/15）

Description

From the listing uploaded by “appupdater”.

[Overview] Smart PBX is an IP phone service that you can use on your smartphone. It is a mobile device service that is provided as a major additional function of mobile communication services such as "OCN Mobile ONE for Business" and dedicated line services such as "Arcstar Universal One" provided by NTT Docomo Business for businesses. By using this app, users of communication services provided by NTT Docomo Business such as "OCN Mobile ONE for Business" can make calls at low cost, and can also use the basic IP phone service functions of "management of call history" and "switching between the default phone and this app depending on the purpose". By using this service, you can make calls using extension numbers not only within the base, but also between bases and when you are out. In addition, customers can change the settings of extension numbers, representative groups, forwarding, answering machines, etc. by themselves, and it is a one-stop service that allows you to use PBX functions. [Official website here] https://www.ntt.com/business/services/voice-video/voip/smartpbx.html OCN Mobile ONE for Business https://www.ntt.com/business/services/network/internet-connect/ocn-business/mobile/mobileone.html Arcstar Universal One https://www.ntt.com/business/services/network/vpn/vpn.html [Notes] Since "Smart PBX" is a service for businesses, you must apply through an NTT Docomo Business sales representative to use it. ---------- ●Please check the terms of use for the Smart PBX application license (https://www.ntt.com/content/dam/nttcom/hq/jp/about-us/disclosure/tariff/pdf/c169.pdf).

Version history

7 versions are listed, going back to v2.9.1. New versions arrive here about every 2 weeks. Since v3.2.0 it requires Android 11+.

v3.3.2 LATEST Jun 30, 2026 34.6 MB TRUSTED v3.3.1 Jun 25, 2026 33.3 MB TRUSTED v3.3.0 Jun 24, 2026 34.6 MB TRUSTED v3.2.0 Feb 25, 2026 33.3 MB TRUSTED v3.1.2 Feb 9, 2026 23 MB TRUSTED

All 7 versions

Security & authenticity

Security rating: Trusted

Signing certificate

  • Signature matches the Google Play version Checked by the source store on Jun 30, 2026.
  • Certificate issued to “NTT Communications Corporation” This is the certificate of the Google Play version.
  • Same certificate as the 2 other versions checked

Store checks and file details

  • Developer signature verified Jun 30, 2026
  • Validated against Google Play Jun 30, 2026
  • Signed byCN=NTT Communications Corporation, OU=Business Network Services Division, O=NTT Communications Corporation, L=Chiyoda-ku, ST=Tokyo, C=JP
  • Signing certificate (SHA-1)D7:8D:41:72:C1:A6:D6:52:E4:14:E2:BC:A5:DA:02:6B:16:4A:60:D2
  • File MD5c35676d797fa7d9793773986222e573d
  • 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 (40)

Smart PBX requests 40 permissions, 12 of them sensitive.

Required hardware & features

Smart PBX APK: questions and answers

Is there a version of Smart PBX for older Android phones?

The current version needs Android 11 or later. Version 3.1.2 is the newest listed build that installs on Android 9 and later. Get version 3.1.2 · 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 Smart PBX 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 c35676d797fa7d9793773986222e573d.

Tags

voip android smartpbx business smart

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