Dejavoo QD4

The Dejavoo QD4 brings Android-powered flexibility to the Dejavoo lineup, combining the brand's renowned reliability with the app-based customization that modern businesses demand. It's a Dejavoo terminal that thinks like a smartphone.

The 5.5-inch HD touchscreen provides ample space for complex interfaces, multi-item orders, and detailed customer information. Running on Android, the QD4 can host business applications beyond payment processing—inventory management, loyalty programs, time clocks, and custom software.

Despite its advanced capabilities, the QD4 maintains Dejavoo's commitment to ease of use. The interface remains intuitive, transitions between apps are seamless, and the learning curve stays gentle. You get smart features without the complexity that often accompanies them.

Built-in WiFi, 4G LTE, and Bluetooth provide flexible connectivity options. Whether you're at a fixed counter with WiFi, mobile with cellular, or connecting peripherals via Bluetooth, the QD4 adapts to your environment.

The payment terminal market includes devices from Clover, PAX, Dejavoo, Ingenico, Verifone, and Square. Here is how the Dejavoo QD4 stands out.

vs Entry-Level Terminals

• Advanced reporting, employee management, and inventory tracking
• PCI-PTS certification with point-to-point encryption
• Customer engagement features built in

vs Proprietary Systems (Square, Stripe)

• Interchange-plus pricing saves 20–40% vs flat-rate
• No processor lock-in — you own the pricing relationship
• More hardware accessories and peripheral support

Integration Ecosystem

Kitchen displays, barcode scanners, cash drawers, and customer-facing screens — all configured by Unison's team so everything works together from day one.

Every card transaction involves three fee layers. Understanding them is the first step to paying less.

The Three Fee Layers

• Interchange — set by Visa/Mastercard, paid to the issuing bank (non-negotiable)
• Assessment — charged by the card network (non-negotiable)
• Processor markup — the only negotiable part of your fees

Interchange-Plus vs Flat-Rate

Flat-rate processors (Square at 2.6% + 10¢, Stripe at 2.9% + 30¢) charge the same on every transaction. That means you overpay on debit cards where actual interchange is often under 0.5%.

Unison's interchange-plus pricing shows you the real cost. The average business saves 20–40% after switching. Read our guide to lowering fees.

Zero-Fee Option

Our cash discount program displays cash and card prices on the Dejavoo QD4. Card-paying customers cover the processing cost. Fully compliant with Visa and Mastercard rules.

The Dejavoo QD4 is the physical cornerstone of a full merchant services ecosystem. Here is what connects to it.

Merchant Account Infrastructure

• Next-day funding for most transaction types
• Real-time reporting: sales by hour, average tickets, top items
• Chargeback notifications and PCI-compliant data storage

Integrated Services

• Cash discount — eliminate processing fees through dual pricing
• Consumer financing — buy now, pay later at checkout (30–50% higher order values)
• Chargeback protection — early alerts before disputes hit your account

Omnichannel Processing

Use the Dejavoo QD4 in-store and our payment gateway online. Add ACH processing for recurring billing. Everything settles into one merchant account with unified reporting.