5 Best Encrypted Phones for Privacy and Security

Published: July 7, 2025

Towards the end of 2024, Reuters reported that the campaign team of then-presidential nominee Donald Trump had invested in encrypted phones after being targeted by Iranian hackers.

The phones include a number of security features that go above and beyond those found on standard devices, including functioning on an isolated channel that can only be accessed by other devices on the same plan.

However, you don’t just need an encrypted phone if you work for a U.S. President. Anyone who deals with sensitive information may need one. Alternatively, perhaps you just really value your privacy and are willing to pay more to protect it.

This article explores the best encrypted phones available, detailing their security features, pros and cons, and who they best suit. We’ll also provide more information on how to choose a secure phone that’s right for you.

Finally, if you prefer to stick with a mainstream smartphone like an iPhone or Samsung, we’ll also cover ways to enhance its security for safer communications.

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The Best Encrypted Phones to Protect Your Communications

Before we start, it’s worth noting that most modern smartphones come with built-in encryption for storage, which helps protect files on the device if it is lost or stolen. But, this encryption doesn’t always extend to communications like calls and messages.

For those seeking a truly secure experience, niche security-focused phones offer robust encryption, advanced privacy features, and hardened operating systems.

However, these phones are often aimed at businesses or government organizations and that is often reflected in the price—all phones on this list cost at least $999.

1. Blackphone PRIVY 2.0

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Manufacturer: Silent Circle
Price: Approx. $1,499

The Blackphone PRIVY 2.0 targets professionals who face elevated surveillance risks or require secure communications for sensitive data handling.

The phone provides encrypted voice communication and secure messaging capabilities, along with enhanced data privacy features. It runs on a modified Android-based operating system that includes additional security enhancements while maintaining a relatively familiar user interface.

What sets the Blackphone PRIVY 2.0 apart is its combination of strong encryption protocols with reasonable usability. While many encrypted phones sacrifice user experience for security, this device attempts to bridge that gap, offering secure voice and messaging services without completely abandoning the smartphone experience most users expect.

⚙️ Features

End-to-end encryption for calls and messages using secure ZRTP protocol.
Android-based operating system with security enhancements.
Blocks Google services, which are prone to tracking and data leaks.
Secure boot system to prevent unauthorized software modifications.
Remote wipe capabilities to erase the user’s data if the phone is lost or stolen.
No pre-installed bloatware, reducing security vulnerabilities.

✅ Pros:

Complete privacy for communications.
Reduced tracking and third-party data collection.
Highest level of call encryption.
Balances user-friendly experience with robust security.
Easy to protect data if the device is compromised.

❌ Cons:

Expensive compared to mainstream smartphones.
Limited app availability due to lack of Google services.
Not designed for casual users—requires understanding of privacy tools.

Who it best suits

The Blackphone PRIVY 2.0 best suits senior executives, government officials, journalists, and individuals dealing with highly sensitive information.

It provides robust security for those needing confidential communications, making it an excellent choice for executives handling corporate secrets or activists in regions with heavy surveillance.

2. Bittium Tough Mobile 2C

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Manufacturer: Bittium
Price: Approx. $1,800

The Bittium Tough Mobile 2C is designed for users who need both top-tier security and a physically rugged device.

Bittium is a Finnish company known for its secure communications and defense technology. Its Tough Mobile 2 is widely used by governments, military personnel, and corporate executives handling sensitive data.

This phone has a dual operating system, unlike other encrypted phones that prioritize software-based privacy measures. One of these systems is a standard Android OS for regular use, while the other is a restricted, security-focused environment for classified tasks.

Even if the Android environment is compromised, the secure environment remains safe. Furthermore, the second OS does not need a network connection to operate, making it less vulnerable to security threats.

It’s also physically durable and suitable for use in the field by military personnel.

⚙️ Features:

Dual OS.
Tamper-proof design.
Secure boot process prevents unauthorized modifications to the system.
End-to-end encrypted calls and messages.
Data encryption.
Secure offline mode (air gapping).

✅ Pros:

Provides military-grade encryption and communication security.
Extremely durable, resistant to drops, water, and tampering.
Separation of personal and classified use.
Remote management and secure wiping options for enterprises.
Strong emphasis on offline security, making it ideal for restricted environments.

❌ Cons:

High price compared to consumer smartphones.
Limited availability outside government and enterprise buyers.
Not optimized for everyday consumer convenience.
Lacks access to mainstream app stores, limiting app compatibility.

Who it best suits

The Bittium Tough Mobile 2C is best suited for government officials, military personnel, and corporate security teams that need a highly secure and physically resilient device.

It is particularly beneficial for users operating in extreme conditions where both cybersecurity threats and physical damage are concerns. This includes professionals working in defense, intelligence, or industries handling classified information.

3. Purism Librem 5

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Manufacturer: Purism
Price: Approx. $1,299

The Librem 5 is the only fully open-source encrypted phone on this list. Unlike other devices that rely on proprietary software, the Librem 5 is designed with transparency and user control in mind.

Being open-source, it allows users to audit the code themselves and ensure no hidden backdoors.

Purism is an American privacy-focused company that specializes in secure, open-source hardware. It is best known for developing laptops, servers, and smartphones that prioritize user freedom, control, and security.

The Librem 5 is built for those who want complete independence from major tech companies, as it avoids Google and Apple entirely. It runs PureOS, a Linux-based system that the company designed so users can customize their security.

⚙️ Features:

Fully open-source software.
Physical switches to disconnect the microphone, camera, Wi-Fi, and Bluetooth.
No reliance on proprietary firmware.
Full disk encryption.
Call encryption.
Secure boot process.

✅ Pros:

Maximum transparency—users can verify security through open-source code.
Physical control over sensors.
No reliance on Google or Apple, reducing corporate tracking.
Receives regular security updates from Purism.
Highly customizable for advanced users.

❌ Cons:

Expensive compared to mainstream smartphones.
Limited app availability due to the non-Android, Linux-based OS.
Less polished user experience than standard smartphones.
Lower spec hardware compared to high-end consumer devices.

Who it best suits

The Librem 5 is best suited for privacy enthusiasts and users who prioritize control over their devices. It is an excellent choice for those who want full ownership of their phone’s security and are comfortable using Linux-based systems.

This device is particularly appealing to activists, journalists, and professionals handling sensitive information, as well as users who prefer to avoid Google and Apple’s ecosystems entirely.

4. K-iPhone

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Manufacturer: KryptAll
Price: Approx. $4,500

The K-iPhone is a modified version of an Apple iPhone that provides secure, encrypted voice communications while retaining the iOS experience. KryptAll modifies existing iPhones to route calls through encrypted servers, preventing interception and tracking.

KryptAll is known for developing encrypted communication solutions for government officials, business executives, and legal professionals who require untraceable phone calls.

⚙️ Features:

Uses modified iPhone hardware for encrypted calls.
End-to-end encryption for all voice communications.
Works over Wi-Fi, cellular, and satellite networks.
Secure calls to both encrypted and non-encrypted phones.
Retains iOS experience with access to the App Store.
No call logs stored, reducing traceability.

✅ Pros:

Provides secure calls while keeping the familiar iOS interface.
Encrypted calls work even when contacting non-secure numbers.
Works worldwide across different network types.
No learning curve for iPhone users.
Allows access to standard iOS apps and services.

❌ Cons:

Very expensive compared to both standard iPhones and other encrypted phones.
Focuses only on voice security—lacks encrypted messaging.
Calls depend on KryptAll’s private servers, requiring trust in their infrastructure.
Limited user control over additional security modifications.

Who it best suits

The K-iPhone is best suited for business leaders, legal professionals, and government officials who need secure voice calls while keeping the convenience of a standard iPhone.

It’s particularly useful for those who can’t switch to an entirely new operating system but still need protection against surveillance and call interception.

However, users looking for comprehensive encrypted messaging and system-wide security may prefer other options.

5. Sirin Labs Finney U1

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Manufacturer: Sirin Labs
Price: Approx. $999

The Sirin Labs Finney U1 is a security-focused smartphone designed for cryptocurrency users who require secure transactions and privacy-focused communications. It uniquely integrates a cold storage wallet, allowing users to store and manage digital assets offline.

Sirin Labs specializes in secure smartphones with blockchain integration, catering to users who prioritize both privacy and cryptocurrency security.

⚙️ Features:

Wallet for securely storing cryptocurrency offline.
Encrypted calls and messaging.
Three-factor authentication.
Preconfigured for secure use of decentralized apps and blockchain access.

✅ Pros:

Strong security for cryptocurrency transactions.
Built-in protections for digital assets and private communications.
Multi-layer authentication enhances security.
Supports decentralized applications.

❌ Cons:

Primarily useful for cryptocurrency users.
Limited app support compared to mainstream platforms.
Expensive for users not focused on blockchain features.
Aging hardware specifications from 2018 launch.

Who it best suits

The Sirin Labs Finney U1 is ideal for cryptocurrency traders and investors who require secure asset storage and private communications. However, those looking for a general encrypted phone may prefer other options.

How to Choose an Encrypted Phone

Now you know our top five encrypted phone picks. In this section, we explain the key factors that determine security and usability. These are essential aspects to consider when selecting the right device for your needs.

What makes a phone truly secure?

While most modern smartphones offer built-in encryption for data storage, a truly secure phone goes beyond this.

Features like end-to-end encryption for calls and messages, secure boot processes, and hardware-level security measures make a significant difference. Some phones even block Google services to reduce tracking risks.

What features should I look for?

End-to-end encryption for voice and messaging to prevent eavesdropping.
Secure operating system that minimizes vulnerabilities.
No reliance on mainstream cloud services that could expose data.
Physical security measures such as tamper-proof hardware or kill switches.
Remote wipe capabilities in case the device is lost or stolen.
Compatibility with secure communication apps like Signal or Telegram.

How to Secure a Standard Smartphone

If purchasing an encrypted phone isn’t right for you, there are ways to make your existing device more secure.

While these steps won’t provide the same level of security as a dedicated encrypted phone, they significantly enhance your privacy and reduce the risk of surveillance or hacking.

Use end-to-end encrypted messaging apps like Signal or Telegram instead of standard SMS.
Turn on full-disk encryption if it’s not already enabled for your device.
Use a VPN to encrypt web traffic and hide your online activity.
Disable unnecessary tracking by reviewing permissions from third party apps and turning off location tracking.
Use strong passwords and multi-factor authentication to protect accounts.
Use antivirus and antispyware software to detect and remove potential threats that could compromise privacy.

Final Thoughts: Choosing the Most Secure Phone

Choosing an encrypted phone depends on your security needs, budget, and preferred balance between usability and privacy.

Whether you need a fully secure communication device like the Blackphone PRIVY 2.0, a rugged option like the Bittium Tough Mobile 2C, or a blockchain-integrated phone like the Sirin Labs Finney U1, there’s an option to fit your requirements.

For those unable to invest in a specialized device, following essential security steps—such as using encrypted messaging apps, enabling a VPN, and installing anti-spyware software—can significantly enhance privacy on standard smartphones.

Staying proactive with your digital security is essential in today’s world, whether you opt for a high-end encrypted phone or take steps to secure your current device.

By Sophia Taylor

Sophia is a Senior Content Manager at Certo Software, showcasing her deep-rooted expertise as an accomplished writer in the tech industry. With a genuine passion for cybersecurity, Sophia is a trusted source of insight and information.