1. Home
  2. 💼 Business
  3. Onebox
Onebox – Virtual Phone System

Onebox – Virtual Phone System

by J2 Web Services, Inc.

46 ratings
85 reviews
💼 Business
📊 Productivity
Free

Details

  • Released
  • Updated
  • December 2, 2009
  • August 12, 2026

Features

Developer

J2 Web Services, Inc.
✨Promote your app ✨
Onebox – Virtual Phone System screenshot #1 for iPhone
Onebox – Virtual Phone System screenshot #2 for iPhone
Onebox – Virtual Phone System screenshot #3 for iPhone
Onebox – Virtual Phone System screenshot #4 for iPhone
Onebox – Virtual Phone System screenshot #5 for iPhone
Onebox – Virtual Phone System screenshot #6 for iPhone
iphone
ipad
📌Ready
Reviews summary↘︎
⭐85
Reviews↘︎
📝4+ tags
Tags↘︎
🔄6+ apps
Alternatives↘︎
❓5 answered
FAQ↘︎
📦~ in 3 weeks
Updates frequency↘︎
🖼️Get Icon
Icons↘︎

About

This app provides a virtual phone system for small businesses, enabling VoIP calling, reliable notifications, and smart call handling on mobile devices. It offers enhanced contact management and detailed call logs for better business communication.

✓VoIP calling within the app
✓Reliable push notifications
✓Enhanced shared contact management
✓Flexible call routing and handling
✓Detailed call logs
✓Voicemail transcription and messaging
✓Custom greeting for incoming calls
Show original description

What users say

Summarized from real user reviews of Onebox. Based on 46 reviews and a 3.0/5 average, it highlights the 10 positives and 10 negatives reviewers mention most about this Business app.

Positive things

  • 👍Easy to use
  • 🚀Fast performance
  • 💡Caller ID customization
  • 💡Call recording feature
  • 💡Faxing capability
  • 💡Voicemail to text transcription
  • 💡VoIP calling
  • 👍Business-oriented features
  • 👍Good for small businesses
  • 👍Comprehensive suite of tools

Negative things

  • 🐛Frequent crashes
  • 🐛App freezes
  • 🐛Unreliable functionality
  • 🐛Poor call quality
  • 🐛Notification issues
  • 🐛Login problems
  • 🐛Outdated interface
  • 🐛Lacks essential features
  • 🐛Customer support issues
  • 🐛Spam calls
See all reviews
+1

What's New in Onebox

5.3.10

August 12, 2026

Your Onebox mobile app now lists all your custom schedules in one place, making it easy to choose the right call setting for your number.

User reviews

Most RecentHighest RatedLowest Rated

Fixed App!

Fixed!
Cory and TrevorCory and Trevor

Response from developer

Hello Cory and Trevor. Thank you for taking the time to provide us with this updated and adjusting your review! We're happy to hear that upgrading your application to the most recent version with the bug fix resolved your issue!

Broken App

Like another reviewer also said, outgoing calls no longer work and support provides no actual way of resolving this
Cory and TrevorCory and Trevor

Response from developer

Hello Cory and Trevor. We apologize for the frustration regarding outgoing calls. We recommend updating to version 5.3 to see if the upgrade resolves the issue. If the problem persists after the update, please contact support at https://www.evoice.com/contact/ and provide code AS0219PL. Our commitment lies in resolving your issue and guaranteeing the full functionality of your service.

Freezes

Suddenly I can not call out. App freezes. Tried pretend no help. Onebox customer support can not help after two days of trying.
Frustrated 213@Frustrated 213@

Response from developer

Hello Frustrated 213@, We apologize for the issues you've experienced with the app freezing and the difficulty getting a resolution. We would like to look further into this for you. Could you please provide your support ticket number(s)? Also, please ensure you are using the most recent version of the Onebox app (v5.2.1) for the best performance.

Not really a “ONE”box fits all

Years go by and still, no email functionality. Will it ever be available?
jill~Binkjill~Bink

Best tool around

I could not get by without it
TMJ DOCTMJ DOC

Response from developer

Hello @TMJ DOC thank you for the great feedback and we are glad you like the service. Should you require any assistance with the service or have any questions , please contact us at ottawasocial@j2.com. Thank you ^DH

See 80 more reviews

Developer apps

Line2 - Second Phone Number
Line2 - Second Phone Number

Calls, Texts, & SMS Messaging

📊 Productivity

(20K)

Free
In-App Purchases
eVoice – Business Phone Number
eVoice – Business Phone Number

Virtual Business Phone System

💼 Business

(523)

Free
See developer apps

User experience

🐞

Reported Bugs

51 issues

Outgoing calls not working

Bug

App freezes during calls

Bug

Sound notification not working

Bug

Texting not working or slow

Bug

App doesn't ring phone

Bug

Scheduling not handled correctly

Bug

Porting out number issues

Bug

No individual extension login

Bug

Notifications failing to work after update

Bug

Call log missing details (duration)

Bug

Notification bubble stuck at 1

Bug

App crashes and drops calls

Bug

VoIP not working on iPad

Bug

App not working with iOS 10 update

Bug

Cannot copy and paste numbers

Bug

Login button stopped working

Bug

Cannot fax .pdf files

Bug

Phone freezes and closes while running app

Bug

Microphone not working during calls

Bug

Customer service unable to help with app issues

Bug

Cannot retrieve email with app or browser

Bug

Crashing upon opening

Bug

Login issues on iPad through safari

Bug

Voicemail to text pop-up closes app

Bug

App closes after entering user and pass

Bug

Click to Call feature uses double minutes

Bug

VoIP dialer crashing

Bug

App crashes when checking messages or logging in

Bug

Calls dropping or bad connection

Bug

Push notification for voicemail followed by crash

Bug

Grayed out record call button

Bug

Cannot conference call

Bug

Contacts list stuck on last contact

Bug

Cannot listen to recorded calls within the app

Bug

Echo on call quality

Bug

App removed to fix, then unable to download

Bug

Pixelated icons on home screen

Bug

No more VoIP option

Bug

VoIP function missing

Bug

Login issues with uppercase passwords

Bug

App crashes consistently

Bug

Website not accessible via mobile browser when app isn't working

Bug

Cannot delete multiple voicemails without losing place

Bug

Voicemail to text feature not working

Bug

App only for text messages, not email or fax

Bug

Main number displayed with extension for all calls

Bug

App crashes when trying to access messages

Bug

App crashes after entering credentials

Bug

App quits after retrieving messages

Bug

VoIP part not working

Bug

Double minutes used with Click to Call

Bug
✨

Requested Features

16 requests

Email functionality

Feature

Individual extension login

Feature

Improved notification system

Feature

Call transfer feature

Feature

Dark mode

Feature

Landscape orientation support

Feature

Copy and paste numbers

Feature

Desktop app or plugin integration

Feature

Access to all message types (email, fax, text)

Feature

Ability to see extension dialed and call duration

Feature

VoIP feature return

Feature

Visual voicemail improvements

Feature

Phone number management similar to RingCentral

Feature

Ability to see all accounts on one page

Feature

Dial out without using contacts

Feature

Conference call functionality

Feature

FAQ

What does the Onebox app do?

The Onebox app provides a virtual phone system for small businesses, allowing users to make and receive calls over the internet (VoIP), manage contacts, handle calls flexibly, and access voicemail and text messages. It's designed for on-the-go use with reliable notifications and a professional interface.

What are the key features of the Onebox app?

Key features include VoIP calling directly within the app, reliable push notifications for alerts, enhanced shared contact management, flexible call routing based on schedules, detailed call logs, voicemail transcription, and the ability to send/receive text messages using your Onebox number.

Is the Onebox app free to use?

The app description indicates it is for existing customers and mentions ads, suggesting it is free to download and use with ads, or potentially part of a paid service. Specific pricing details for the virtual phone system service itself are not provided in the description.

What are the limitations of the Onebox mobile app compared to the web version?

Faxing capabilities are exclusively managed through the web account manager and are unavailable in the mobile app. Admin users cannot switch between different user inboxes on the mobile app, and deleted messages are permanently removed from the app, requiring access via the web account manager's Trash folder for recovery.

How does the app handle outbound and inbound caller ID?

For outbound calls made through the app, your logged-in Onebox number will always be displayed as the Caller ID. For inbound calls, the app will show the phone number of the incoming caller.