Bigme B7 Color ePaper Tablet vs VIWOODS 6.13'' Carta1300 AiPaper Reader with 4G Connectivity
Updated August 2026 — Bigme B7 Color ePaper Tablet wins on performance, VIWOODS 6.13'' Carta1300 AiPaper Reader with 4G Connectivity wins on portability and display.
The Bigme B7 Color offers versatile functionality, while the VIWOODS excels in portability and AI features.
Why Bigme B7 Color ePaper Tablet is better
Functionality
Bigme offers 4G calling and Android OS.
Screen Size
Bigme has a larger 7-inch display.
Battery Capacity
Bigme has a 3000 mAh battery.
Why VIWOODS 6.13'' Carta1300 AiPaper Reader with 4G Connectivity is better
Portability
VIWOODS is ultra-thin and lightweight.
Display Quality
VIWOODS features a 300 PPI Carta 1300 display.
AI Features
VIWOODS includes advanced AI integration.
Overall score
Specifications
| Spec | Bigme B7 Color ePaper Tablet | VIWOODS 6.13'' Carta1300 AiPaper Reader with 4G Connectivity |
|---|---|---|
| Price | $289.00 | $279.99 |
| Sales Rank | 53605 | 15239 |
| 4G Connectivity | Yes | Yes |
| Voice Calls | Yes | No |
| AI Integration | No | Yes |
Dimension comparison
Price Comparison
The Bigme B7 Color ePaper Tablet is priced at $289.00, while the VIWOODS 6.13'' Carta1300 AiPaper Reader costs $279.99, making the VIWOODS about 3.5% cheaper than the Bigme. This slight price difference may influence budget-conscious buyers, particularly those who are looking for a capable e-reader with robust features without breaking the bank. The pricing reflects their positions in the market, with the Bigme B7 ranked 53,605 in sales and the VIWOODS significantly higher at 15,239, suggesting a better market reception for the latter.
Design and Portability
The VIWOODS 6.13'' Carta1300 AiPaper Reader boasts an ultra-thin and lightweight design at just 138 grams, making it highly portable. In contrast, the Bigme B7 Color tablet, while portable, does not emphasize its weight in the same way, making it feel bulkier for on-the-go reading. The VIWOODS's compact 6.13-inch screen allows it to fit easily in a pocket, which is a significant advantage for commuters and travelers. The Bigme is still a 7-inch device, which, while slightly larger, may not be as convenient for those prioritizing portability.
Display Quality
When it comes to display quality, the VIWOODS features a Carta 1300 E-Ink display with a high resolution of 300 PPI, ensuring sharp and clear text, which enhances the reading experience significantly. The Bigme B7 Color, while offering a color ePaper display, does not specify its PPI but is designed for a more versatile use case beyond just reading. The advanced display technology in the VIWOODS is tailored for reading comfort, especially during extended sessions, making it a better choice for avid readers focused solely on e-reading.
Functionality and Features
The Bigme B7 Color stands out with its all-in-one functionality as a 7-inch ePaper tablet that supports Android 14 OS, allowing users to install various apps, including web browsing and voice calls with built-in 4G. This multi-functionality makes it suitable for users who require more than just an e-reader. In comparison, the VIWOODS focuses heavily on reading, integrating AI features like instant assistance and a personal knowledge library. While the Bigme is designed for productivity and versatility, the VIWOODS excels in delivering a specialized reading experience enhanced by its AI capabilities.
Battery Life and Usage
While specific battery life details are not provided, the Bigme B7 Color has a 3000 mAh capacity, suggesting it should handle extended use effectively. The VIWOODS, on the other hand, does not specify battery capacity but is designed for efficiency with its ultra-thin profile, which often implies optimized battery management. Users seeking a device for long reading sessions without frequent recharges might lean towards the Bigme, while those valuing quick access to information and lightweight design may prefer the VIWOODS.
Connectivity Options
Both devices come with 4G connectivity, allowing users to stay connected without relying on Wi-Fi. The Bigme B7’s support for voice calls adds a layer of communication functionality that the VIWOODS lacks. While the VIWOODS offers advanced AI features and a user-friendly interface, the absence of voice calling may deter those looking for a more integrated device for both reading and communication. Hence, users who prioritize connectivity alongside reading might find the Bigme a more compelling option.
User Experience and AI Integration
The VIWOODS incorporates AI capabilities that enhance user experience significantly, offering features such as voice input, AI-assisted learning, and a way to save Q&A sessions for future reference. This makes it an excellent choice for students and professionals who benefit from interactive learning tools. The Bigme B7 Color, while offering productivity features such as a magnetic stylus for note-taking, does not emphasize AI integration. Thus, for users seeking an interactive reading and learning experience, the VIWOODS offers superior functionality.
Which should you buy?
Deciding between the Bigme B7 Color ePaper Tablet and the VIWOODS 6.13'' Carta1300 AiPaper Reader ultimately hinges on your specific needs. If you prioritize a versatile device with 4G calling capabilities, a larger screen, and an Android operating system, the Bigme B7 is the better choice. However, if you seek a lightweight, portable e-reader with advanced AI features and a superior display for pure reading enjoyment, the VIWOODS stands out as the more compelling option. Considering the price, user experience, and intended use, each device caters to different preferences, making them both excellent choices in their respective niches.

