| Feature |
Sunmi D3 Pro |
Sunmi D3 Mini |
| Processor |
Qualcomm Hexa-core (Up to 2.4GHz) |
Qualcomm Hexa-core (Up to 2.4GHz) |
| Operating System |
SUNMI OS 4.0 (Android 13) |
SUNMI OS 4.0 (Android 13) |
| Main Display |
15.6" Full HD (1920 x 1080) |
10.1" HD (1280 x 800) |
| Customer Display |
Optional 10.1" (NFC enabled) |
2.4" (58mm model) or 4" (80mm model) |
| Memory |
4GB RAM + 64GB ROM |
3GB RAM + 32GB ROM |
| Printer |
External connection only |
Integrated (58mm or 80mm options) |
| Connectivity |
Wi-Fi 6, Bluetooth 5.0, Ethernet |
Wi-Fi 5, Bluetooth 5.0, 4G (optional) |
| Battery |
No (Mains power only) |
Optional 2600mAh (58mm model only) |
Top Considerations: Which fits your business?
1. Counter Space and Portability
The D3 Mini is an "all-in-one" solution. Because the printer and scanner are built into the chassis, it takes up very little room. If you run a coffee shop, pop-up stall, or boutique with limited counter space, the Mini is the logical choice. The D3 Pro is a "thin-client" style desktop; it is larger and requires an external receipt printer, making it better for fixed, high-volume counters like full-service restaurants or supermarkets.
Expert Tip: Integrated printers can be harder to swap out, so we always recommend going for terminal without this, allowing you to choose the best receipt printer for you, as well as swap it out if it ever fails.
2. Transaction Speed and Multi-tasking
The D3 Pro has a slight edge in performance with 4GB of RAM and Wi-Fi 6. If your POS software is resource-heavy (e.g., managing complex inventory or multiple delivery app integrations simultaneously), the Pro handles these tasks with less strain.
Be sure to check with your point-of-sale software provider, whether either the D3 Pro or Mini are compatible.
3. Customer Interaction
The D3 Pro offers a secondary 10.1" display that can show high-resolution promotional videos or detailed digital receipts. The D3 Mini uses smaller displays primarily for showing the transaction total. If upselling at the point of purchase is part of your strategy, the Pro is superior.
Expert Tip: Some customer displays mirror the main screen image, and some are able to show specific content you select for advertising. This capability is dependent on your point-of-sale software provider and whether they support this dual functionality.
4. Power Resilience
The D3 Mini (58mm version) includes a built-in battery. This is vital for businesses with unreliable power or those needing to move the terminal around a space (e.g., taking it to a table or using it at a market). The D3 Pro must remain plugged into a wall socket.
Market Comparison: How well are these POS terminals placed in the market?
When compared to competitors like Square Register or Pax E-Series, the Sunmi D3 range offers more flexibility because it is "software agnostic." While Square locks you into their payment ecosystem, Sunmi allows you to choose your own UK merchant service provider and POS software.
FAQ: Common Questions
Does the Sunmi D3 Pro come with a printer? No. The D3 Pro is a terminal only. You will need to connect a separate thermal receipt printer via USB, Bluetooth, or LAN. The D3 Mini, however, has a printer built-in. Talk to us about our selection of printers.
Can I use any UK SIM card for the 4G model? Yes, the D3 Mini (4G version) has standard SIM slots that support UK mobile data providers, which is useful for mobile catering.
What is the "Tap on Glass" feature? Available on the D3 Pro, this allows customers to tap their contactless card or phone directly onto the main screen to pay, provided your payment software supports "SoftPOS."
Is it waterproof? No. While the aluminium housing is robust, these devices are not IP-rated for water resistance. They should be kept away from splash zones in bars or kitchens.
How do I clean the screen? Use a microfibre cloth and a small amount of 70% isopropyl alcohol. Avoid spraying liquids directly onto the device, especially near the printer mechanism
Ready to Choose?
Click here for D3 Pro
Click here for D3 Mini
