What Is the Best GrapheneOS Alternative? 4 Options Reviewed

If you’re looking for a mobile operating system that prioritizes privacy and anonymity, you’ve likely encountered GrapheneOS, a popular choice among security-conscious Android users.

While Graphene owes its popularity to its advanced mobile security and privacy features, its device compatibility is extremely limited as it’s primarily designed for Google Pixel smartphones. Additionally, many of its users also experience issues with banking apps and NFC payments, a potential dealbreaker for those who rely on these features for everyday convenience.

By choosing the right GrapheneOS alternative, you get to enhance your phone’s privacy and security without unnecessary trade-offs. This guide explores the features, compatibility, and usability of four worthy competitors to help you find the most suitable GrapheneOS replacement.

What To Look For in Alternatives to GrapheneOS

While reviewing your options, make sure the alternative you choose retains the robust security and privacy features that Graphene offers but also eliminates its limitations. To do so, consider the following aspects:

• Device compatibility: GrapheneOS only works on Google Pixel phones, so you should explore high-security options that are compatible with a larger number of devices and brands. The goal is to maintain the same level of privacy regardless of the device you use.
• Privacy features: A worthy alternative to GrapheneOS should include advanced system hardening and sandboxing features, isolating applications from one another to enhance privacy.
• Security measures: To ensure comprehensive mobile data protection, a suitable GrapheneOS alternative should use filesystem-based encryption to secure all data, file names, and metadata.
• Reliability: Confirm that the option you choose runs minimal background processes and receives regular updates and security patches. This ensures optimal performance and reduces the system’s exposure to vulnerabilities. A proper replacement should have a simple, user-friendly interface, enabling users to install, configure, and adjust seamlessly.
• App support: Security-focused operating systems, including GrapheneOS, usually don’t use Google apps or services. If compatibility with Google applications is essential, look for systems that offer sandboxed support without compromising privacy protections.
• Transparency: Choose an alternative that is transparent about its pricing and doesn’t include any hidden fees. You should also explore the provider’s breach disclosures and responsiveness amid security incidents to confirm they handle user data responsibly.

4 Best GrapheneOS Alternatives Reviewed

Considering the criteria listed above, we have selected the four best alternatives to GrapheneOS:

1. CalyxOS
2. LineageOS
3. Ubuntu Touch
4. /e/OS

Refer to the table below for a brief overview of these GrapheneOS alternatives and their key comparison points:

The following sections explore their features, advantages, and limitations to help you find a replacement that works for you.

1. CalyxOS

Founded in 2020, CalyxOS is a free Android-compatible mobile operating system that emphasizes security and privacy without compromising ease of use. Although it isn’t compatible with all Android devices, you can use CalyxOS on various models of the following brands:

1. Motorola
2. Pixel
3. Fairphone
4. SHIFTphone

This OS is primarily created to enhance the security and privacy of users, including journalists, activist groups, and lawyers. However, its user-friendly features and interface make it suitable for any privacy-focused individual looking to protect their mobile data from unauthorized access and vulnerabilities.

Throughout 2026, the team has been rebuilding: a new HSM-based signing process (audited by Trail of Bits) was completed early in the year, and the first Android 16 test build shipped on May 4, 2026. As of this writing, there is no stable Android 16 release yet. If you're considering CalyxOS today, factor that in.

CalyxOS’s core principle is Privacy by Design, so it provides robust privacy features and settings, such as:

• Sandboxing: CalyxOS sandboxes, or isolates, apps from each other and the system, so users’ private data can’t be shared between applications, strengthening privacy measures.
• End-to-end encrypted communication: Users can make encrypted calls through the CalyxOS Dialer feature and send encrypted messages via its Signal application.
• Anonymous browsing: The OS includes a secure Tor Browser for anonymous browsing. Additionally, its default search engine, DuckDuckGo, blocks behavior trackers and ads.
• No location tracking: When using CalyxOS, your location won’t be tracked or reported to Google.
• Built-in VPN: This OS includes a free built-in VPN to keep your network traffic and IP address secure and ensure anonymity.

While CalyxOS is compatible with most Google apps, you must install them using microG, its security-focused replacement for Google Play. Unfortunately, microG may encounter compatibility issues with applications that rely heavily on Google Play services.

Additionally, CalyxOS doesn’t receive updates as frequently as GrapheneOS, making it less reliable by comparison.

2. LineageOS

LineageOS is a free, open-source mobile operating system, released in 2016 as a successor to CyanogenMod. Unlike GrapheneOS, Lineage is compatible with a large number of brands and devices, such as smartphones, tablets, and set-top boxes. It’s also a great GrapheneOS alternative for Samsung—you can use it on 15+ Samsung models.

The platform is built on the Android Open Source Project (AOSP), which provides the core source code for the Android OS. This means it’s a custom version of Android with a simplified, de-Googled Android-like interface, making it easy for users to adjust to it.

Instead of focusing on a hardened system and sandboxing to enhance security, Lineage OS provides a bloatware-free Android experience. This means it doesn’t include any Google apps or services to protect user data from tracking and unauthorized access. It also uses the Privacy Guard features to manage app permissions in case a user decides to install Google’s applications through Lineage’s Google apps package.

Although LineageOS is a solid alternative to GrapheneOS, it lacks the latter’s advanced security and privacy features. Its primary focus is on providing a de-Googled, minimalistic, highly customizable, user-friendly OS that resembles Android.

3. Ubuntu Touch

Ubuntu Touch is a free, open-source mobile version of the Ubuntu OS released in 2014. It’s available on phones and tablets, including brands like Xiaomi, Fairphone, Google Pixel, and Volla Phone. You can also connect it to a monitor or TV and run apps side-by-side.

Ubuntu Touch prioritizes privacy, security, and user control. It does so through its AppArmor, a user-friendly security system that proactively protects the OS from external and internal threats. The app uses security policies to define which system resources individual applications are allowed to access, preventing unauthorized actions.

Additionally, this OS runs on a read-only file system, which means it can access data without modifying or adding new information. So, your files are secured from tampering or unauthorized changes.

Ubuntu Touch has its own set of mobile apps that transition seamlessly between mobile, tablet, and PC. It also supports Waydroid—an independent project that allows running Android apps on Linux-based operating systems.

However, Ubuntu Touch may not be ideal for users who are accustomed to Android and unfamiliar with Linux. While the OS is fairly easy to navigate once installed, the setup process can be challenging.

Another downside of Ubuntu Touch is the limited device support. Users may run into issues with banking apps.

4. /e/OS

/e/OS is an open-source mobile OS compatible with 200+ devices. It’s fully de-Googled and provides a privacy-first environment for using online services like a search engine and cloud storage.

To ensure Google can’t access and collect user data, /e/OS removed Google’s default search engine and replaced it with Spot—its own search engine that allows anonymous browsing. Additionally, this OS avoids Google apps and services by:

• Replacing Google Services with microG
• Not using Google’s Network Time Protocol servers
• Avoiding Google’s Domain Name System servers

/e/OS provides a set of secure apps for daily use. It also lets users install Android apps through an app repository called F-Droid that works like Google Play but prioritizes privacy. Still, the OS may not support all Google applications.

The OS also includes an Advanced Privacy widget that allows users to choose whether they consent to being tracked and provides options to hide their IP address and geolocation.

Additionally, /e/OS is operated by Murena, which provides an online workspace for storing, backing up, and retrieving data securely on remote servers. It offers 1 GB of free storage, but you can get paid plans for additional storage of up to 2 TB. Monthly workspace subscription starts at €1.99 (around $2.30) for 20 GB.

However, despite its broad device compatibility, /e/OS support is limited compared to stock Android.

Verdict: Which Alternative to GrapheneOS Should You Choose?

There is no single right answer, as the best alternative depends on which trade-off you can live with. Here are the key considerations:

• For most users in 2026, /e/OS is the most pragmatic default. It supports 250+ devices, ships regular stable releases, and pairs cleanly with Murena's privacy-respecting cloud workspace. It trades some kernel-level hardening for broader device compatibility and a smoother day-to-day experience.
• If you need broad device coverage on older or less common Android hardware, LineageOS still has the widest device support of these projects, at the cost of weaker privacy hardening.
• If you prefer a Linux-rooted, non-Android UI and don't rely on banking apps, Ubuntu Touch may be the best choice
• As of mid-2026, CalyxOS is still emerging from a development hiatus that began in August 2025. We'd wait for a stable Android 16 release before recommending it again.

Know that even the most secure operating system can only protect what’s on the device—it cannot prevent threats originating from the mobile network itself. The most concrete recent illustration: in late 2024, the FBI and CISA confirmed that the China-linked Salt Typhoon campaign had compromised AT&T, Verizon, T-Mobile, and Lumen, exfiltrating customer call records, intercepting calls and texts of targeted individuals, and reaching the systems carriers use to fulfill court-authorized wiretaps.

None of that can be stopped by hardening the operating system on your device. Vulnerabilities like SIM swaps, SS7 attacks, and network-level surveillance live below the OS, where the carrier, not the OS, is the only thing standing between you and the attacker.

That’s where Cape comes in. As a secure mobile carrier, Cape protects you and your information at the network level, ensuring that you stay connected without having to compromise your privacy.

Meet Cape: The Secure Carrier Designed for Today’s Threats

We share the most intimate details of our everyday lives with our cell phones. In order to stay connected, our cell phones share that information with local cell networks, and in turn, those cell networks share our data with each other.

While this system is what makes connectivity possible, it was also built with interoperability as its priority, rather than security. The global cell network is vulnerable to a number of threats, as seen through headlines about major carrier data breaches we see time and time again. When major carriers aren’t losing our sensitive personal data in breaches and hacks, they’re actively selling it to ad networks, data brokers, and third parties.

At Cape, we believe that privacy and security shouldn’t have to be sacrificed for connectivity. That’s why we built our service with privacy principles and security features at its core, including:

1. Minimal Data Collection

Cape eliminates the risk of your sensitive data falling into the wrong hands by not even asking for it. When you make your Cape account, we don’t ask for your name, address, or SSN. We only collect the information that’s necessary to provide the service, and we retain it for the least amount of time possible.

2. SIM Swap Protection

During account creation, you receive a unique 24-word phrase that generates a private key tied to your phone number. This pass phrase is required to move your number to a new device or carrier. Nobody else, not even us at Cape, has access to the phrase, meaning there’s absolutely no way for bad actors to transfer your number to their device, effectively nullifying the possibility of SIM swapping.

3. Disappearing Call Logs

Your phone stores an incredible amount of data, which can be accessed through call and text records. Most mobile carriers store your call and text metadata for years, which can easily fall into the wrong hands.

Cape is built to forget, meaning we delete Call Data Records (CDRs) after just 1 day, ensuring nobody can see who you texted or called, track where the communication took place, or access the sensitive information within CDRs.

4. Identifier Rotation

All SIM cards are accompanied by International Mobile Subscriber IDs (IMSI). These function as unique identifiers devices use to register with cellular networks. Traditional telcos assign fixed IMSIs to user accounts, meaning the carriers, advertisers, hackers, and other bad actors can exploit them to identify and track your device.

Cape patches this security hole by allowing you to automatically rotate your IMSI every 24 hours. In practice, this means you appear as a different subscriber every day, making it much more difficult for anyone to identify your device or track your movements.

5. Secondary Numbers

Are you tired of spam messages from brands, phone call surveys, and scammers trying to trick you into sharing sensitive information over the phone? The reason why most people are exposed to these nuisances is that we are often required to share our phone numbers with retailers, websites, apps, and service providers.

While messages and phone calls can be annoying, what’s worse is that your number can easily become a target for data brokers and bad actors. That’s why many people turn to VoIP numbers as secondary lines. VoIPs are a decent option, but they don’t fully solve the issue—they are not encrypted, you can’t use them for 2FA, and they’re an additional cost each month.

When you sign up for Cape, you get two free additional SMS/MMS lines that are middle-to-end encrypted. This allows you to use Secondary Numbers for online shopping, signing up for services and discounts, and receiving secure OTPs, while your primary phone number is reserved for friends and family.

6. Network Lock

Traditional cellular networks were designed for interoperability, not security. Outdated and legacy network protocols like SS7 have vulnerabilities that allow attackers to hack in and track your location, intercept your calls and texts, and steal sensitive information.

Cape’s Network Lock uses a proprietary signaling proxy to verify that your device’s physical location matches the network it’s trying to attach to. If anything looks suspicious, like a mismatched location, we block the connection.

7. Encrypted Voicemail

Voicemails can reveal more than you think, from personal messages to authentication codes, yet most voicemail systems are outdated and unencrypted.

Cape encrypts your voicemails so that only you can access them.

8. Secure Global Roaming

To access phone service while traveling abroad, your phone typically needs to connect to local telecom providers. The trouble is, there’s no guarantee all networks are secure, and not every government treats privacy the same.

Cape doesn’t leave anything to chance. We let you route traffic through our U.S.-based mobile core, so you can safely use international data roaming without exposing your identity or sharing sensitive data or communications with foreign carriers.

With Cape, you get up to 15 GB per month of international roaming, included in your monthly plan.

Get Started With Cape Today

If you’re ready to make a switch from legacy telcos to America's privacy-first mobile carrier, visit cape.co/get-cape.

In addition to all the features listed above, you can further enhance your privacy and security with Proton. Our partnership with this technology leader allows you to get Proton Unlimited or Proton VPN Plus for only $1 for the first six months.