# Call One UC > Remote management of home/office telephony services with call transfer and voicemail. (iPhone/iPad app by Call One, Inc..) - Source: https://appshunter.io/ios/app/call-one-uc/id1358793823 (this page in markdown: same URL + `.md`) - Developer: [Call One, Inc.](https://appshunter.io/developer/1358793822) - Category: Business, Productivity - Price: Free - Rating: 4.20/5 from 29 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 12.0 · 148 MB - Languages: American English, Bulgarian, Croatian, French (France), German (Germany), Greek, Indonesian, Italian, Polish, European Portuguese and 4 more - Released: 2018-04-03 - Data updated: 2026-06-01 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/call-one-uc/id1358793823/reviews.md ## What is Call One UC? Max UC - For customers of Call One using the Call One UC product. IMPORTANT: FULL TELEPHONY FUNCTIONALITY IS ONLY AVAILABLE WITH AN ACTIVE CALL ONE UC ACCOUNT ***** With Call One UC, you can take control of your home or office telephony services from anywhere. FEATURES • Call One Meeting: Join audio and video conferences that you are invited to • Make and receive calls over WiFi/LTE/3G using your landline number • Move calls between your landline, mobile and tablet devices, without hanging up • Add video to your calls • Make calls from any phone using your landline caller ID • Receive new voicemail alerts • Playback voice and video messages and view faxes • View transcribed voice messages • Control how incoming calls are handled • Sync your Accession contacts across devices NOTE: Your current feature bundle may not offer all features listed and may require you to pay additional subscription charges to access certain features. Contact your sales agent for information. Call One UC also requires 3G/4G or WiFi access. Use of these services may incur additional charges. ## Key features - Join audio/video conferences - Make/receive calls with landline number - Transfer calls between devices - Add video to calls - Use landline caller ID - Voicemail and fax playback - Transcribed voice messages ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/call-one-uc/id1358793823/reviews.md ### 1/5 — Terrible App *2025-04-23* Terrible App ### 5/5 — My business line rings wherever I am *2020-01-18* Great way to take business calls when I’m working from home or traveling. Great app that does everything it says it does. Highly recommend this for any size business. ## Frequently asked questions about Call One UC ### What is Call One UC? Call One UC is a business application that allows customers of Call One to manage their home or office telephony services remotely. It enables making and receiving calls using a landline number over WiFi or cellular data. ### Does Call One UC require a subscription? While the app is free to download, full telephony functionality requires an active Call One UC account. Some features may require additional subscription charges, so contact your sales agent for details. ### What devices does Call One UC support? Call One UC is available for iPhone, iPad, and iPod devices. It requires a 3G/4G or WiFi internet connection to operate. ### Can I transfer calls with Call One UC? Yes, Call One UC allows you to move calls between your landline, mobile, and tablet devices without hanging up. This feature provides flexibility for managing your communications on the go. ### Does Call One UC have video conferencing? Yes, Call One UC includes a feature called 'Call One Meeting' which allows you to join audio and video conferences you are invited to. You can also add video to your calls. ### How does Call One UC handle voicemail? Call One UC provides new voicemail alerts and allows you to play back voice messages. It also offers the ability to view transcribed voice messages for easier review. ### When was Call One UC last updated? The latest version of Call One UC, 2.33.12, was last updated on May 5, 2021. The app was initially released on April 3, 2018. ### What is the age rating for Call One UC? Call One UC has an age rating of 4+. This indicates it is suitable for a wide range of users, including children, though adult supervision is always recommended for business applications. ## Version history (last 5 releases) ### 2.33.12 — 2021-05-05 Here’s what to expect in this release: Security improvements Voicemail forwarding to other voicemail boxes (as CommPortal web does) File transfer UX improvements Updated Zoom SDK Thai Support Improved IM performance This release, we’ve been focused on improving the security of the app – Updating your security email requires a password confirmation. MaX Meeting now uses AES-GCM encryption (needs to be enabled in the Zoom master account). ### 2.31.16.049 — 2021-01-07 This patch contains the following: Security improvements Support for Greek language It also contains fixes for the following bugs: SFR 544110 App crash when opening on iPad SFR 544620 Display issue when unlocking an iPad SFR 544621 Crash when attempting to pick up a call SFR 543183 Fix IM UI for users with neither SMS nor Group IM SFR 546561 Connection error on iPad when viewing upcoming meetings SFR 534163 Crash from trying to present Settings page twice SFR 545386 iOS branded app crashes when trying to send feedback SFR 544617 OS terminates app for using too much CPU when collating contacts SFR 544618 No ringback tone on iPhone on Intra-BG Calls ### 2.31.06 — 2020-12-16 V2.31 introduces support for transferring all file types in one-to-one chat conversations in Call One UC Mobile on iOS, bringing this into line with Call One UC Desktop. Prior to V2.31, subscribers with Call One UC Mobile on iOS could only transfer photos and videos. On upgrade to V2.31, these subscribers will now have the option to transfer all document types. Once a subscriber has initiated a chat with one of their IM-enabled contacts, clicking on the paperclip symbol will launch a Share File pop-up giving two options, Photo & Video or Document. When the subscriber selects one of these, Call One UC Mobile launches the native document or photo picker. Clicking the back button from the native file picker returns the subscriber to the IM conversation. This enhancement does not require any configuration and is available immediately after upgrading Call One UC Mobile on iOS to V2.31. ### iOS App 2.30.11023 — 2020-01-02 - Minor bug fixes - Feature enhancements for password security ### 2.30.10.63 — 2019-10-16 Addresses several bugs that affected users after upgrading to iOS 13.1 including app crashes on start up, client crashes when viewing IM messages and transparent title bars. ## Apps similar to Call One UC | App | Rating | Price | Category | | --- | --- | --- | --- | | [Cloud Dial](https://appshunter.io/ios/app/cloud-dial/id1463972628) | 4.7 (27) | Free | Business | | [GoDial Enterprise - Team App](https://appshunter.io/ios/app/godial-enterprise-team-app/id1506959298) | 4.1 (11) | Free | Business | | [newVoice Mobile](https://appshunter.io/ios/app/newvoice-mobile/id1144653895) | 4.9 (15) | Free | Business | | [The Call Portal & Phone Number](https://appshunter.io/ios/app/the-call-portal-and-phone-number/id1561597458) | 5.0 (1) | Free | Business | | [Onebox – Virtual Phone System](https://appshunter.io/ios/app/onebox-virtual-phone-system/id338908820) | 3.0 (46) | Free | Business | | [US Second Phone Number - EXNum](https://appshunter.io/ios/app/us-second-phone-number-exnum/id6740494474) | 3.7 (3) | Free | Business | ## Related topics [One97 Communications Ltd](https://appshunter.io/ios/topics/one97-communications-ltd) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*