Top Modular Android Smartphones Under $700 in 2025

When selecting a smartphone within the $500 to $700 range that runs on Android and emphasizes modularity for easy repair and part replacement, several options stand out in 2025. Modular smartphones are designed to be easily repairable and customizable, allowing users to replace or upgrade components like batteries, cameras, and screens without specialized tools or professional assistance.

Market Overview

The modular smartphone market has seen significant advancements, with manufacturers focusing on sustainability and user empowerment. Brands like Fairphone and Nothing have been at the forefront, offering devices that combine performance with repairability.

Detailed Product Breakdown

1. Fairphone 6

   • Modularity: The Fairphone 6 is designed with a modular architecture, allowing users to easily replace components such as the battery, display, and cameras. This design promotes longevity and reduces electronic waste.

   • Specifications:

     • Display: 6.46-inch OLED with a resolution of 1224x2700 pixels.
     • Processor: Qualcomm QCM6490.
     • RAM: 8GB.
     • Storage: 256GB, expandable via microSD.
     • Cameras: Dual 50MP rear cameras and a 50MP front camera.
     • Battery: 4,415mAh removable battery.
     • Operating System: Ships with Android 15.

   • Availability: As of July 2025, the Fairphone 6 is primarily available in European markets and has not been officially released in the United States. (en.wikipedia.org)

2. CMF Phone 2 Pro

   • Modularity: The CMF Phone 2 Pro features a modular design that allows for the attachment of various accessories, enhancing its functionality and personalization.

   • Specifications:

     • Display: 6.77-inch AMOLED with a 120Hz refresh rate.
     • Processor: MediaTek Dimensity 7300 Pro.
     • RAM: 8GB.
     • Storage: 128GB or 256GB.
     • Cameras: Triple rear camera setup with 50MP wide, 50MP telephoto, and 8MP ultrawide lenses; 16MP front camera.
     • Battery: 5,000mAh with 33W wired charging.
     • Operating System: Nothing OS 3.2 based on Android 15.

   • Availability: The CMF Phone 2 Pro is available in select markets, including parts of Europe and Asia. Availability in the United States is limited, and potential buyers may need to explore international shipping options. (en.wikipedia.org)

Specific Recommendations

Given the user's preference for modularity and the specified budget, the following recommendations are tailored to their needs:

1. Fairphone 6

   • Justification: The Fairphone 6 offers unparalleled modularity, allowing users to replace and upgrade components easily. Its commitment to sustainability and long-term software support makes it an excellent choice for those prioritizing repairability.

   • Considerations: Availability in the United States is currently limited. Interested buyers may need to consider importing the device or waiting for potential future releases in their region.

2. CMF Phone 2 Pro

   • Justification: The CMF Phone 2 Pro combines a modular design with robust specifications, offering a unique blend of performance and customization. Its accessory ecosystem allows users to tailor the device to their preferences.

   • Considerations: Similar to the Fairphone 6, availability in the United States is limited. Prospective buyers should verify compatibility with local networks and consider warranty implications when purchasing from international sellers.

Price-Performance Analysis

Both the Fairphone 6 and CMF Phone 2 Pro are priced within the $500 to $700 range, aligning with the user's budget. While they may not offer the highest performance metrics compared to non-modular counterparts, their modularity provides significant value for users seeking repairable and customizable devices.

Actionable Advice

• Research Availability: Before making a purchase, confirm the availability of the Fairphone 6 and CMF Phone 2 Pro in your region. Check official websites and authorized retailers for the most accurate information.

• Network Compatibility: Ensure that the chosen device is compatible with your carrier's network bands to avoid connectivity issues.

• Warranty and Support: Consider the implications of importing a device, such as warranty coverage and access to customer support.

• Alternative Options: If availability is a significant concern, explore other smartphones that offer user-replaceable batteries or are known for ease of repair, even if they are not fully modular.

By focusing on modular smartphones like the Fairphone 6 and CMF Phone 2 Pro, users can enjoy the benefits of easy repairability and customization, aligning with the growing trend towards sustainable and user-centric technology.