AI comparison report

b7 pro vs b751c

By CompareAI Editorial Team · Published 2026-09-12 · How we compare

Choose the Bigme B7 Pro for significantly higher performance, faster refresh rates, and standalone 4G LTE connectivity, or choose the Bigme B751C for a simpler…

Who wins: b7 pro or b751c?

Choose the Bigme B7 Pro first if you need standalone 4G LTE calling, double the RAM (8 GB vs. 4 GB), four times the storage (256 GB vs. 64 GB), and double the maximum refresh speed (up to 43 FPS vs. ~21 FPS); opt for the Bigme B751C if you only need a straightforward Wi-Fi e-reader for reading and light note-taking.

Based on our analysis across 5 dimensions with 20 sources, b7 pro scores 9.1/10 overall while b751c scores 6.7/10 overall.

Dimensionb7 prob751c
Processor & Memory Configuration9.5/106.5/10
Connectivity & 4G LTE Support9.5/106/10
E-Ink Refresh Speed & Video Capability8.5/106/10
Android Version & System Features9.2/107/10
Physical Controls & Form Factor8.8/107.9/10
Overall9.1/106.7/10

Should I choose b7 pro or b751c?

Verdict: Choose the Bigme B7 Pro first if you need standalone 4G LTE calling, double the RAM (8 GB vs. 4 GB), four times the storage (256 GB vs. 64 GB), and double the maximum refresh speed (up to 43 FPS vs. ~21 FPS); opt for the Bigme B751C if you only need a straightforward Wi-Fi e-reader for reading and light note-taking.

Choose the Bigme B7 Pro for significantly higher performance, faster refresh rates, and standalone 4G LTE connectivity, or choose the Bigme B751C for a simpler, dedicated Wi-Fi color e-reader experience.

The Bigme B7 Pro outperforms the Bigme B751C across all hardware and performance metrics, featuring a MediaTek Dimensity 1080 processor with 8 GB of RAM and 256 GB of storage compared to the Bigme B751C's 2.3 GHz octa-core processor with 4 GB of RAM and 64 GB of storage—delivering double the memory and 400% of the internal capacity. The Bigme B7 Pro also doubles visual fluidness with proprietary xRapid refresh rates reaching up to 43 FPS versus approximately 21 FPS on the Bigme B751C. Furthermore, the Bigme B7 Pro adds standalone 4G LTE cellular connectivity, native Android 14, an integrated 5MP rear camera, and a slimmer 5.8mm, 215g body, making it the decisive choice over the 7mm, 220g Wi-Fi-only Bigme B751C for power users needing mobility and multitasking.

Best for b7 pro

  • Users needing standalone 4G LTE cellular calling and mobile data via Nano-SIM
  • Heavy multitasking and demanding Android apps requiring the MediaTek Dimensity 1080 processor and 8 GB RAM
  • Extensive local storage needs with 256 GB internal capacity
  • Smooth scrolling, web browsing, and video playback with up to 43 FPS xRapid refresh speeds
  • Modern out-of-the-box Android 14 operating system support
  • A slimmer 5.8mm, 215g chassis with eight touch-sensitive shortcut keys and a 5MP rear camera

Best for b751c

  • Standard reading, digital note-taking, and lighter multitasking workloads
  • Users who only require dual-band Wi-Fi and Bluetooth connectivity without cellular hardware
  • Readers comfortable with a standard 4 GB RAM and 64 GB storage configuration
  • Users who prefer a dedicated 7mm-thick traditional e-reader form factor without integrated cameras

When not to compare directly

Do not compare them directly if your primary requirement is a standalone cellular phone-tablet hybrid, as the Bigme B7 Pro includes integrated 4G LTE calling and mobile data whereas the Bigme B751C is strictly a Wi-Fi and Bluetooth reading tablet.

What are the key differences between b7 pro and b751c?

  • Processor & Memory Configuration

    The Bigme B7 Pro offers double the memory and four times the storage with 8 GB RAM and 256 GB storage powered by a Dimensity 1080 processor, compared to the Bigme B751C with its 2.3 GHz processor, 4 GB RAM, and 64 GB storage.

    b7 pro: The Bigme B7 Pro is equipped with a MediaTek Dimensity 1080 octa-core processor paired with 8 GB of RAM and 256 GB of internal storage, delivering significantly higher performance for multitasking and demanding Android apps.

    b751c: The Bigme B751C features a 2.3 GHz octa-core processor with 4 GB of RAM and 64 GB of onboard storage, providing sufficient capability for standard reading, note-taking, and lighter multitasking workloads.

    Scores — b7 pro: 9.5/10, b751c: 6.5/10

    Higher processing power and RAM determine how smoothly multitasking, demanding Android apps, and background indexing run on an E-Ink device.

    Sources: Bigme B7 PRO powerful color epaper Phone-Tablet 80FPS ..., Bigme B751C - eWritable

  • Connectivity & 4G LTE Support

    While the Bigme B7 Pro provides standalone 4G LTE mobile calling and data connectivity via a physical SIM slot, the Bigme B751C is restricted entirely to Wi-Fi and Bluetooth connections.

    b7 pro: The Bigme B7 Pro includes integrated 4G LTE cellular calling and data via a Nano-SIM slot alongside dual-band 2.4GHz/5GHz Wi-Fi and Bluetooth 5.0, enabling standalone mobile connectivity.

    b751c: The Bigme B751C relies exclusively on dual-band 2.4GHz/5GHz Wi-Fi and Bluetooth 5.0 for wireless connections, lacking any integrated cellular network support.

    Scores — b7 pro: 9.5/10, b751c: 6/10

    Standalone cellular connectivity allows on-the-go web browsing, cloud syncing, and communication without relying on Wi-Fi hotspots.

    Sources: Bigme B7 PRO powerful color epaper Phone-Tablet 80FPS ..., Bigme B751C - eWritable

  • E-Ink Refresh Speed & Video Capability

    The Bigme B7 Pro achieves higher refresh speeds of up to 43 FPS with its xRapid technology compared to the Bigme B751C, which tops out at approximately 21 FPS.

    b7 pro: The Bigme B7 Pro utilizes proprietary xRapid refresh technology to achieve refresh speeds of up to 43 FPS, delivering significantly smoother scrolling and capable video playback on its 7-inch color E-Ink screen.

    b751c: The Bigme B751C reaches refresh rates of approximately 21 FPS, which supports basic animated content and page turns but experiences more noticeable ghosting during rapid scrolling and video playback.

    Scores — b7 pro: 8.5/10, b751c: 6/10

    Faster refresh rates minimize ghosting and make scrolling, web browsing, and video playback significantly smoother on E-Ink panels.

    Sources: Bigme B7 PRO powerful color epaper Phone-Tablet 80FPS ..., Bigme B751C - eWritable

  • Android Version & System Features

    The Bigme B7 Pro natively ships with modern Android 14 out of the box, whereas the original Bigme B751C runs older Android 11 software.

    b7 pro: The Bigme B7 Pro runs an open Android 14 operating system with Google Play Store support, offering modern system permission management, extended third-party app compatibility, and software integration for 4G calling [1, 13].

    b751c: The standard Bigme B751C operates on the older Android 11 platform with Google Play access and built-in AI productivity tools, though an upgraded B751C S edition is offered with Android 14 [2, 12].

    Scores — b7 pro: 9.2/10, b751c: 7/10

    A newer Android version provides extended app compatibility, improved security, and modern permission management.

    Sources: Bigme B7 PRO powerful color epaper Phone-Tablet 80FPS ..., Bigme B751C S--Upgraded 7inch color ereder with Android 14 OS

  • Physical Controls & Form Factor

    While the Bigme B751C offers a traditional 7mm-thick e-reader form factor at 220g without a camera, the Bigme B7 Pro features a slimmer 5.8mm, 215g body with physical side buttons, eight touch-sensitive keys, and an integrated 5MP rear camera [2, 5, 13].

    b7 pro: The Bigme B7 Pro features a 5.8mm-thick, 215g chassis with two physical page-turn buttons, eight touch-sensitive side shortcut keys, and an integrated 5MP rear camera with LED flash [5, 13].

    b751c: The Bigme B751C features a 7mm-thick chassis weighing 220g with integrated physical page-turn buttons positioned on an ergonomic side bezel, while omitting any built-in camera hardware [2, 4].

    Scores — b7 pro: 8.8/10, b751c: 7.9/10

    Dedicated page-turn buttons and ergonomic button placement impact one-handed reading comfort during long reading sessions.

    Sources: Bigme B751C S--Upgraded 7inch color ereder with Android 14 OS, Bigme B7 Pro Review: The Gold Standard for Color E Ink Readers

What are the pros and cons of b7 pro vs b751c?

b7 pro

Strengths

  • The Bigme B7 Pro is equipped with a MediaTek Dimensity 1080 octa-core processor paired with 8 GB of RAM and 256 GB of internal storage, providing double the RAM and four times the storage of the Bigme B751C.
  • The Bigme B7 Pro includes integrated 4G LTE cellular calling and data via a Nano-SIM slot alongside dual-band Wi-Fi and Bluetooth 5.0 for standalone mobile connectivity.
  • The Bigme B7 Pro achieves refresh speeds of up to 43 FPS with its proprietary xRapid technology, enabling smoother scrolling and video playback.
  • The Bigme B7 Pro natively runs modern Android 14 out of the box with Google Play Store support and system integration for 4G calling.
  • The Bigme B7 Pro features a slim 5.8mm, 215g chassis equipped with two physical page-turn buttons, eight touch-sensitive side shortcut keys, and a 5MP rear camera with LED flash.

b751c

Strengths

  • The Bigme B751C includes dedicated physical page-turn buttons on an ergonomic side bezel for comfortable one-handed reading.
  • The Bigme B751C provides a 2.3 GHz octa-core processor with 4 GB of RAM and 64 GB of onboard storage, delivering adequate performance for standard reading, note-taking, and lighter tasks.
  • The Bigme B751C supports dual-band 2.4GHz/5GHz Wi-Fi and Bluetooth 5.0 wireless connectivity with built-in AI productivity tools.

Weaknesses

  • The Bigme B751C comes with lower memory and storage capacity, offering 4 GB of RAM and 64 GB of storage powered by a 2.3 GHz octa-core processor.
  • The Bigme B751C lacks integrated cellular connectivity and is restricted entirely to Wi-Fi and Bluetooth networks.
  • The Bigme B751C tops out at a refresh rate of approximately 21 FPS, resulting in more noticeable ghosting during rapid scrolling and video playback compared to the Bigme B7 Pro.
  • The standard Bigme B751C operates on older Android 11 software rather than shipping with Android 14 out of the box.
  • The Bigme B751C has a thicker 7mm, 220g chassis and lacks rear camera hardware and touch-sensitive shortcut keys found on the Bigme B7 Pro.

Where does this data come from?

  1. Bigme B7 PRO powerful color epaper Phone-Tablet 80FPS ...
  2. Bigme B751C S--Upgraded 7inch color ereder with Android 14 OS
  3. Bigme B7 Pro Color ePaper Tablet , Protable E-ink ...
  4. Bigme B751C E-Ink Tablet Review - Sypnotix
  5. Bigme B7 Pro technical specifications
  6. Advantages of Colour E-Ink Reader - BigMe B751C Full Review
  7. Bigme B7 Pro Review
  8. Is Bigme B751C Color E-ink worth it or is there better cheaper ...
  9. Review: Bigme B7 Pro colour ePaper tablet with 4G
  10. Bigme B751C review - Kuro Time Design
  11. Bigme B7 Pro Color e-Reader, Upgraded Android E-Ink Tablet 7 ...
  12. Bigme B751C - eWritable
  13. Bigme B7 Pro Review: The Gold Standard for Color E Ink Readers
  14. Bigme B7 Color vs. Bigme B751C: How Two Generations of Color E ...
  15. Bigme B7 Pro Review: A Connected 7-Inch Color E Ink Tablet for ...
  16. REVIEW: Bigme B751C "S" - 2026 Edition | Updated Compact Color ...
  17. Battery Performance Tests
  18. Bigme B751C 7 Inch Color E- Paper Tablet with Kaleido 3 Screen ...
  19. Bigme B7 PRO powerful color epaper Phone-Tablet 80FPS ...
  20. Bigme B751C Color ePaper Tablet User Manual

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