# SUMOFIBER Mobile Voice vs 123Telecom

The clearest difference is update cadence: SUMOFIBER Mobile Voice at every 2 months against 123Telecom's every 10 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SUMOFIBER Mobile Voice ships an update every 2 months, 123Telecom every 10 months. The most recent releases landed on November 3, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | SUMOFIBER Mobile Voice | 123Telecom |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/sumofiber-mobile-voice/id1479251479/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 10 months |
| Monetization | Free | — |
| Size | 120 MB | 124 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SUMOFIBER LLC](https://appshunter.io/developer/1746436608) | [123Telecom Limited](https://appshunter.io/developer/1711029096) |

## What reviewers say

### SUMOFIBER Mobile Voice

[App page](https://appshunter.io/ios/app/sumofiber-mobile-voice/id1479251479)

This app brings your office phone system to your mobile device, enabling you to make and receive business calls using your office number and extension. Manage voicemail, transfer calls, and record conversations on the go, all while maintaining a professional presence.

**Highlights:** Receive calls to office number, Send and receive SMS, Make calls as office extension, Display office caller ID, Call transfer and parking, On-demand call recording, Visual voicemail management

**Features:** Siri integration

**In-app purchases:** none


### 123Telecom

[App page](https://appshunter.io/ios/app/123telecom/id6471536452)

**Features:** macOS Compatibility, Siri integration

**In-app purchases:** none


## Frequently asked questions

### Is SUMOFIBER Mobile Voice free?

SUMOFIBER Mobile Voice is free to download, with no in-app purchases.

### Is 123Telecom free?

123Telecom is free to download, with no in-app purchases.

### Do SUMOFIBER Mobile Voice or 123Telecom have ads?

Neither SUMOFIBER Mobile Voice nor 123Telecom shows ads.

### Which is updated more often, SUMOFIBER Mobile Voice or 123Telecom?

SUMOFIBER Mobile Voice ships an update every 2 months, and 123Telecom every 10 months. Most recently, SUMOFIBER Mobile Voice was updated on November 3, 2026 and 123Telecom on October 27, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*