Sunmi D3 Pro: A Closer Look

Sunmi are a well-known brand in the POS industry and continue to showcase products fit for retail & hospitality. Their range of products cater for a multitude of applications, allowing a business owner to fine-tune their hardware exactly for what they need. 

The Sunmi D3 family are a series of products that are versatile in many environments, and continue to be a popular choice. It's time to give the Sunmi D3 Pro and D3 Pro 80mm a more detailed look, and view the specifications that make these devices great for EPOS systems. 

This is solely a comparison between the D3 Pro and D3 Pro 80mm. 

D3 Pro vs D3 Pro 80MM

The key difference between the two is that the D3 Pro 80mm comes with an integrated printer, and doesn't have a "modular" secondary customer display. 

What does this mean?

If you buy the D3 Pro 80mm, you will either need to get a customer facing display (CFS) version or one that is mono-screen, with no option to add a secondary customer display in the future. 

The D3 Pro is designed to attach a 10.1" secondary customer display when needed, allowing for an easier first investment than having to purchase the CFS outright, with the main unit itself. This device doesn't feature an integrated printer, so you can choose a receipt printer, and swap it out, if required. Overall, it's a lot more flexible to choose the D3 Pro rather than the D3 Pro 80mm. 

Specifications Explained:

Both the D3 Pro and D3 Pro 80mm feature the same core specifications, with the exception of the design itself, as described above. 

• Processing: Powerful Octa-core processor (up to 2.2GHz) running on SUNMI OS 4.0 (built on top of modern Android 14). This means the device works well for multi-tasking and stability. 

• Storage Options: Available in either 4GB RAM + 64GB ROM or 3GB RAM + 32GB ROM. Both can be expanded up to 1TB using a Micro SD card. 

• Screens: A sharp 15.6" Full HD display (1920x1080) with multi-touch and an anti-fingerprint coating. 10.1" optional customer facing display (1280x800). 

• Wireless Tech: High-speed Wi-Fi 6 (2.4GHz/5GHz) and Bluetooth 5.4.

• Everyday Ports: Loaded with connections including 3 standard USB ports, 1 Type-C port, a cash drawer port (RJ12), a serial port (RJ11), and an audio jack.

Why Choosing an Open POS System Saves Your UK Business Money

Unlike closed point-of-sale systems like Clover or Square, investing in the Sunmi D3 Pro or Sunmi D3 80mm means you are never locked into a single software provider.

If your business currently uses a locked POS system, switching software is incredibly difficult and expensive. Because the hardware only works with one brand, changing your software platform forces you to replace your entire till system. This results in unnecessary hardware costs that drain budget away from more critical areas of your business growth.

By contrast, the entire Sunmi hardware range offers complete flexibility, allowing you to comfortably switch between compatible EPOS providers whenever you like. If you ever want to change your point-of-sale software, all you need to do is check that your new provider supports Android-based Sunmi hardware.

Ultimately, this open ecosystem means you can keep using the exact same premium hardware, even if you decide to switch your software provider down the line.

Moving on from older Sunmi models?

If you are currently running a Sunmi T2 or T2s, the D3 family represents a massive generational leap. Moving up to Android 13/14 and Wi-Fi 6 ensures your till system remains future-proof, highly secure, and compatible with the latest security standards required by modern UK cloud banking and EPOS apps.

Which layout fits your counter?

• Choose the Sunmi D3 80mm if counter space is tight: By integrating a premium 80mm thermal receipt printer directly into the heavy-duty metal base, this all-in-one terminal leaves a remarkably clean, tiny footprint. It’s perfect for busy bars, coffee kiosks, or small boutiques where every inch of counter space matters.

• Choose the Sunmi D3 Pro if you want modular growth: If you already own an external kitchen or receipt printer, or prefer to mount your printer under the counter, the D3 Pro gives you that freedom. It keeps costs lower on day one while giving you the flexibility to plug in a customer-facing screen later down the line.

An Important Note on Google Play Services (GMS)

When purchasing either device in the UK, keep an eye on the specific model variant. Sunmi offers these terminals in a Standard OS build (ideal for developers or platforms using private apps) and a GMS-EDLA certified build. If your chosen EPOS software needs to be downloaded straight from the standard Google Play Store, make sure you specify the GMS version when ordering.

[View the Sunmi Range of EPOS Systems]