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Silent Phone - Secure calls & messaging

Experience unparalleled privacy with encrypted calls, secure messaging, and file sharing for your business.

Silent Phone
  • 6.15 Version
  • 3.0 Score
  • 362K+ Downloads
  • Free License
  • 3+ Content Rating
Download Android APK (21.63 MB)
Old Versions
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CONS

High monthly subscription cost

Requires personal information and payment details

Limited compatibility with some networks

Frequent connectivity issues reported

Complexity in understanding pricing structure

Not widely adopted among potential users (needs family and friends on platform)

Occasional bugs and glitches in the app

Lack of transparency about costs before sign-up

Dependent on the operational status of Silent Circle's services

Introduction:

Silent Phone acts as the software element within Silent Circle's Enterprise Privacy Platform, which combines devices, software, and services to ensure safety and security for you and your business. 

It enables peer-to-peer encrypted voice calls, secure video communication, messaging, and file transfers, all featuring an easy zero-touch deployment approach for cross-platform security on Android, Silent OS, and iOS. 

Why Us? 

Enterprise-grade encrypted voice, video, and messaging with Silent Phone 

Whether traveling or working from home, Silent Phone keeps your team both connected and secure. Works on any Android or iOS device. 

End-to-end encrypted & authenticated 

Silent Phone makes sure your conversations are 100% private and that you're connected only to your intended party. All encryption is done on device. No one can listen in. 

No new hardware 

Make secure calls with your existing iOS and Android devices. There are no special headsets or SIM cards. You don't need a single-purpose phone. With Silent Phone, no new hardware is required.

Enterprise-ready

Silent Phone is easy to deploy and manage in an enterprise environment. It requires no end-user training. It supports SSO, SIEM systems, and can be deployed via MDM. You and your team will have a dedicated client liaison and direct access to our highly trained technical support staff.

Premium security

We protect brand name enterprises, international NGOs, government agencies, and firms in such industries as defense, energy, and law. With Silent Phone, you're getting a premium product with top-notch security.

Unlimited user to user calling and messaging

Keep the conversation going from anywhere in the world. Silent Phone delivers unlimited worldwide calling and messaging between your users with no hidden or additional fees from us.

Data minimization

Stored data is a security risk. Many providers keep as much data as possible "just in case." We keep as little data as possible. We don't track IP addresses or keep logs of calls and messages between users.

Key Features:

* Genuine Privacy. Endorsed by organizations and governments globally. 

* Effortless “zero-touch” implementation throughout your organization.

* Training available either remotely or on-site.

* Secure conference calling with high-definition audio quality. 

* Burn feature ensures text messages can auto self-destruct for added protection.

* Voice memos serve as a contemporary substitute for standard unprotected voicemail.

* Safely send files in formats such as pdf, docx, mov, mp4, png, and jpg.

* Upgrade to Silent World for secure communication with non-members. 

FAQs:

1: What are Silent Circle's core services? Which devices are they applicable to?

Answer: The core services are enterprise-grade end-to-end encrypted communication solutions, including encrypted voice calls, video calls, messages, file sharing, and conference calls. They are applicable to any Android or iOS device without the need for special hardware.

2: What are the core security mechanisms for its secure communication?

Answer: The core security mechanisms include: ① End-to-end encryption, where all encryption is completed on the device side, users hold the keys, and no one (including Silent Circle itself) can monitor; ② Automatic message deletion (Burn timers), which can erase messages after a custom time; ③ Security Words to detect complex attacks.

3: How can enterprises manage Silent Circle's communication services? What are the functions of the management tools?

Answer: Enterprises manage through Silent Manager, which has functions such as Single Sign-On, Remote Wipe, Virtual On-Prem, etc., supporting centralized deployment and management in complex enterprise environments.

Get Further Help & Share Feedback for Silent Circle:

For more details about utilizing Silent Circle in your enterprise, please reach out to our sales team. 

If you have other inquiries or need assistance, check our FAQ page. 

Your input is valuable for enhancing your experience. If you appreciate your privacy and enjoy using Silent Phone, we encourage you to take a moment to review the app. 

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Tags
Communication
Information
  • Version6.15
  • UpdateAug 31, 2025
  • DeveloperSilent Circle, Inc.
  • CategoryCommunication
  • Requires AndroidAndroid 5.0+
  • Downloads362K+
  • Package Namecom.silentcircle.silentphone
  • Signature774499f817f735775f89118a73a54b83
  • ReportFlag as inappropriate
Old Versions
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User Reviews
3.0 8 Reviews
5
4
3
2
1
  • Mucles
    Mucles

    I can’t use my prepaid card anymore. That’s frustrating. Now you want a Visa when it’s linked to my bank. It doesn’t feel safe at all.

  • Al Razzak
    Al Razzak

    I hear you loud and clear. The next generation seems to think privacy comes without a cost. I used to think that way as well. Remember the Solarin phone? Priced at 13k dollars, not even the top-rated in security. Kids need a wake-up call. I’ll gladly pay my ten bucks for better protection. I'll even sing their praises and support them wholeheartedly if they keep us safe. Let’s recognize the efforts of the few companies actually trying to protect us. Those one-star reviews? Some folks might want to reconsider their perspective before they really need help.

  • Ian
    Ian

    That's really frustrating! It’s disappointing when you expect a simple setup and then discover there's an ongoing cost. You sign up, excited about secure communication, and it turns into something else. You feel misled, and that can be really annoying. It's always good to know the full details before committing. You're not alone in feeling this way!

  • Muhammad Ayaz
    Muhammad Ayaz

    This app is fantastic. It requires an email and a credit or debit card, especially for new users or those having trouble. First, download the app. Next, register your account, which needs an email. Log out of the app after registration and remember your login details. Check your email and click the verification link; this is why logging out is necessary. After verifying, log back in and select the payment option for the monthly fee of $10. To get a phone number, you’ll need to pay. The price varies based on the country. The app operates on a credit system. You load money onto your card for credits. You won’t pay for the phone number directly using a credit card; instead, use the credits. This part often confuses people.

  • Peter Zander
    Peter Zander

    Mr. Zimmerman is a genius, no doubt about it. I started using his app right from the get-go. Three stars feels a bit unfair since SC really set the stage for secure VoIP. I appreciate the constant improvements. The decision to move from Switzerland to the U.S. gives me pause. More details about silent mode would be great too. Imagine being able to have multiple phone numbers, maybe three per user. A voice changer would be amazing! It could make your voice sound completely different if someone recorded you. You could choose male or female and different accents, even variations of those accents. It would be incredible to deepen your voice too. Also, how cool would it be to detect Sting Rays or devices that monitor closely? Adding a VPN and a browser like Brave that wipes all browsing history after use would take things up a notch. Hope you enjoy this wish list! It’s all serious but brings a smile as well.

  • Blind OBSERVATIONS \m/
    Blind OBSERVATIONS \m/

    The latest update from 2015 brings an exciting blend of modern design and functionality. It's refreshing not to have my call log monitored by any phone company or prying eyes. There is a small downside, other apps might still record calls while this one is in use. Silent Circle might even take control of the microphone during calls. The monthly fee feels a bit steep. I wonder if Redphone offers a similar experience without the cost.

  • Malakai Peek
    Malakai Peek

    Got a provisioning error telling you to activate a service level before logging in? First, check your account details. Make sure you have the correct service subscription. Next, look for an activation link in your email or account settings. Sometimes, a simple click can fix the issue. If that doesn’t work, try restarting your device. If it still won’t let you in, contact customer support for help. They can guide you through getting everything set up. Don’t worry, this is manageable!

  • Kara Sternquist
    Kara Sternquist

    You start the signup process, fill in your details with excitement. You reach that final step, and bam! The payment screen pops up. Suddenly, the realization hits you. This service comes with a price tag. Confusion sets in as you didn't expect it. The anticipation shifts to surprise. Now you must decide whether to proceed or turn back.

Security Status
Clean

It’s extremely likely that this software program is clean.

What does this mean?

We have scanned the file and URLs associated with this software program in more than 50 of the world's leading antivirus services; no possible threat has been detected.

  • Name: Silent Phone
  • Package Name: com.silentcircle.silentphone
  • Signature: 774499f817f735775f89118a73a54b83