TL;DR: Linux Query Motherboard for Tax Service Hall
AndroidSBC reliability desk: query terminal boards clear a 72-hour continuous touch soak test serving Vilnius, Lithuania. The WF-K3399 self-service query terminal Android motherboard spans the dual-screen HD query terminal with mirrored display and eleven sister models in the WF-K series, all built on the RK3399 dual Cortex-A72 1.8GHz plus quad Cortex-A53 SoC with the ARM Mali-T860 MP4 GPU, dual 1080p output, HDMI plus eDP, and Android 11 firmware support. AndroidSBC, the export arm of Wanlin Manufacturing Group, ships the WF-K family from the Longgang source factory in Shenzhen to Vilnius and Lithuania importers who run hospital information points, bank branch lobbies, government service halls, mall directory stations, airport concourses and outdoor query cabinets.
About AndroidSBC and the Self-Service Query Terminal Android Motherboard Family
AndroidSBC runs self-service query terminal Android motherboard production inside Wanlin Manufacturing Group, a Chinese board manufacturer with its own SMT lines in Longgang, Shenzhen. For Lithuania importers the practical point is that the WF-K series keeps one twelve-model catalogue, one driver SDK and one compliance file set across every tier a Vilnius project might need. The plant holds a standing allocation of LPDDR4X and eMMC for the WF-K line, which is how Vilnius projects keep their lead times stable across quarters.
WF-K3399 Technical Specifications
| Parameter | AndroidSBC WF-K3399 (dual-screen HD query terminal with mirrored display) | Industry Average |
|---|---|---|
| Processor | RK3399 dual Cortex-A72 1.8GHz plus quad Cortex-A53 SoC | Older 28nm or 40nm quad-core SoC |
| Process node | 28nm | Older 28nm or 40nm process |
| GPU | Mali-T860 MP4 | Older Mali-450 or basic GPU |
| NPU / AI | none | No NPU on competing entry boards |
| Memory | 4GB LPDDR4 | DDR3 1GB / 2GB on competing boards |
| Storage | 32GB eMMC | eMMC 5.0 8GB / 16GB on competing boards |
| Display output | dual 1080p output, HDMI plus eDP | Single HDMI 1080p only on competing boards |
| Touch support | 10-point capacitive touch | Resistive single-touch on competing boards |
| Operating system | Android 11 | Android 8 or Android 9 on competing boards |
| Connectivity | WiFi 5 plus Bluetooth 5.0 plus Gigabit Ethernet | WiFi 4 plus 10/100M Ethernet on competing boards |
| Query peripherals | Capacitive touch, thermal printer, document scanner, card reader | No bundled touch, printer or scanner driver SDK on competing boards |
| Operating temperature | 0C to 50C | 0C to 40C on competing boards |
All parameters in the table above are measured at 25C ambient. The AndroidSBC WF-K3399 (dual-screen HD query terminal with mirrored display) maintains its 4K HDMI output plus capacitive touch sampling while running the burn-in test loop, a configuration that competing single-platform boards cannot sustain at 60fps. For Lithuania importers sourcing the WF-K family, the WF-K3399-A variant is the typical configuration for the dual-screen HD mall directory rollout use case, with a sustained weekly capacity of 5000 pcs/wk.
Challenges in Sourcing Self-Service Query Terminal Android Motherboards for Lithuania Buyers
Many Lithuania integrators under-estimate the peripheral side of a query terminal. The board is one line item, but the printer, scanner, card reader and touch drivers decide whether Vilnius can actually ship a working station.
The third constraint is the evidence pack. Vilnius integrators bidding on public work in Lithuania are routinely asked to show the RRT trail behind CE marking with RRT radio interface notification, which is where a factory-direct supplier earns its place. AndroidSBC deals with it by treating the Vilnius requirement as one lot of 114900 units on one BOM, quoted on September 22, 2026 and shipped over the Hamburg - Shenzhen lane.
Competitive Comparison: WF-K3399 vs Competing Self-Service Query Terminal Android Boards
Competing query boards in Lithuania often win on headline price until the Vilnius integrator prices in the missing driver SDK and compliance files.
- Platform breadth: twelve models on eight chips (RK3588, RK3568, RK3566, RK3288, RK3399, A133, H618, T527), so {city} integrators can move between tiers without changing driver stack or mounting pattern.
- Bundled integration: touch, printer, scanner, card reader, camera and voice driver SDK ships in the carton; competing query boards sold to {city} usually ship a board only.
- Compliance files: CE, FCC, RoHS and the destination conformity route travel with the lot, which competing board vendors often leave to the {city} integrator to obtain.
- Long-term supply: one fixed BOM per production lot and a seven-year firmware window, against the frequent silicon swaps seen on competing query boards reaching {city}.
Global Self-Service Query Terminal / Information Kiosk Market Trends
The query terminal category is expanding faster than the general kiosk market because it replaces a staffed desk rather than supplementing one. In Lithuania that shows up as bundled tenders covering the dual-screen HD query terminal with mirrored display together with hall displays and information screens, and Vilnius operators are following the same pattern.
- Volume shift to board-level sourcing: more integrators now buy the motherboard rather than the finished kiosk, which is why the WF-K3399 and WF-K1330 tiers ship in board form with the enclosure left to the local partner.
- Dual-screen becomes the default: hall display plus touch query on one board is replacing two separate devices, and the WF-K1330 and WF-K1331 configurations address that pattern directly.
- Longer service life expectations: operators now plan five to seven years per query terminal, which favours a fixed BOM such as the WF-K1331 over boards that re-spin silicon between lots.
For Vilnius the practical reading is that query terminal demand is not a spike but a standing requirement, and Lithuania operators are buying on repeatability rather than on a one-off price.
Partner Success Story: Nordweg Innbyggertorg (municipal citizen service operator)
A Nordweg Innbyggertorg programme in the Nordic public service segment illustrates how the WF-K family from AndroidSBC supports Vilnius integrators on the ground. Nordweg Innbyggertorg deployed 114900 compact query terminals across municipal service points.
- OEM relationship: AndroidSBC private-label SKU shipped with Nordweg Innbyggertorg branding and CE / FCC / RoHS files bundled.
- Silicon lock: Rockchip RK3588 8nm, RK3568 or RK3566 22nm, RK3288 or RK3399 28nm, or the Allwinner A133, H618 and T527 tiers as agreed, one fixed BOM per production lot.
- Peripheral driver SDK: bundled into the source-factory shipment, covering capacitive touch, thermal printer, receipt printer, document scanner, A4 printer, barcode scanner, QR code, NFC, RFID, card reader, ID reader, face recognition, voice module, speaker amplifier and microphone.
- Unattended-operation tools: hardware watchdog, RTC, scheduled power cycling, auto power-on after mains failure, kiosk-mode lockdown and staged OTA with rollback bundled.
- Compliance paperwork: CE / FCC / RoHS plus RRT conformity, all bundled into the Shenzhen source-factory shipment.
Nordweg Innbyggertorg Programme Director for Nordic Public Service highlighted: Nordweg Innbyggertorg replaced counter-side lookup binders with the WF-K compact board, and 114900 units went into Vilnius service points without any change to the existing counter furniture.
Field Report: dual-screen HD directory query rollout at a shopping mall
PINGHU, Shenzhen, September 22, 2026 - Geng Yan, AndroidSBC field desk. Burn-in for the WF-K3399 batch ran the touch, printer and card reader loops simultaneously, which is the combination Lithuania integrators actually meet in the field. The WF-K3399 self-service query terminal Android motherboard order for Vilnius, Lithuania cleared the burn-in station on schedule and is en route via the Hamburg - Shenzhen lane.
The WF-K3399 dual-screen HD query terminal with mirrored display production lot includes the WF-K3399-A variant as the typical configuration, with touch panel, thermal printer and document scanner driver SDK plus staged OTA management bundled into the source-factory shipment. For Lithuania integrators, the RRT conformity plus CE marking with RRT radio interface notification paperwork is bundled.
Filed by Geng Yan, AndroidSBC field desk, PINGHU, Shenzhen. Lithuania integrators typically request CE plus local radio interface notification for self-service query terminal board deployments.
WF-K3399 Application Scenarios
The WF-K3399 dual-screen HD query terminal with mirrored display sits inside a twelve-variant WF-K self-service query terminal Android motherboard family from AndroidSBC, a Wanlin Manufacturing Group export brand. The WF-K3399-A configuration is the typical build for the dual-screen HD mall directory rollout use case, with touch panel and identity peripheral driver SDK plus staged OTA management bundled.
- Hospital and clinic information points: the WF-K3399 drives a touch query station at the entrance while the hall display shows the same information set to waiting visitors in Vilnius.
- Bank and financial branch lobbies: touch query plus counter display from one board, with card reader and ID reader integrated for account and product lookups.
- Government service halls: the WF-K6180 runs tax, social security and real estate information lookup, with printing available on the same board.
- Shopping mall directories: the WF-K5270 serves mall directory and wayfinding lookup, with the advertising screen running an independent content loop.
- Airport and train station concourses: high-brightness information query where the WF-K8800 has to stay readable under strong ambient light.
- Retail and pharmacy price or product lookup: compact stations where the WF-K8801 fits a narrow counter without structural work.
- Outdoor and unheated information cabinets: the industrial tier holds the wide temperature window and 7x24 duty cycle for street-level query points.
- Multi-language public information points: on-screen lookup in more than one language from a single board, with voice assistance where the venue requires it.
- Retrofit programmes in Vilnius: the same board re-uses the existing enclosure, panel and mounting pattern so an installed estate can be upgraded board by board.
Partnership Models for Vilnius Buyers
AndroidSBC works with Vilnius integrators on three commercial tracks rather than one, because Lithuania projects differ in how much of the stack the local partner wants to own.
- Distribution track: the partner buys the WF-K board against a published price list, keeps its own stock, and AndroidSBC supplies the driver SDK and compliance files with each lot.
- Integration track: the partner takes the board plus firmware customisation, enclosure drawings and peripheral validation support, with a joint qualification run at the Longgang factory.
- Private-label track: the WF-K board ships under the partner brand with customised boot logo, packaging and documentation, on a fixed BOM held for the length of the agreement.
For Lithuania buyers the sequencing advice is simple: prove the board on one pilot site in Vilnius, then choose the track that matches the volume the pilot generates.
Frequently Asked Questions
Does the WF-K self-service query terminal Android motherboard family support a dual-screen HD query terminal with mirrored display?
Answer: Yes. The dual-screen HD query terminal with mirrored display is supported out of the factory image, and AndroidSBC validates it again on the production lot before the Lithuania shipment leaves Shenzhen.
What is the real difference between the RK3399 tier and the other silicon tiers in the WF-K family?
Answer: The difference is workload envelope, not compatibility. A board on the RK3399 tier runs the same factory image as the rest of the WF-K family, which keeps spare parts interchangeable across a Lithuania estate.
Can AndroidSBC handle CE / FCC / UKCA / RoHS / REACH paperwork for Lithuania?
Answer: Yes. The conformity pack for Lithuania is prepared by the factory, not by the Vilnius integrator, which removes the usual delay between arrival and installation.
What are the MOQ and lead time for a first order of the WF-K self-service query terminal family?
Answer: The MOQ for a first WF-K order is deliberately low so Vilnius buyers can run a field pilot: sample quantities ship in 1-3 days and a first production lot is typically 15-30 days. Lithuania distribution orders scale from there.
Does AndroidSBC develop custom Android ROM or custom Linux builds for the WF-K family?
Answer: Yes, and this is one of the most common requests from Vilnius integrators. Custom boot behaviour, pre-installed applications, kiosk-mode restrictions and custom Linux images are all handled at the factory for Lithuania projects.
How are software updates and long-term support handled on the WF-K family?
Answer: The WF-K family carries a seven-year update commitment, staged OTA delivery and rollback capability, which lets Vilnius partners keep Lithuania sites on one validated revision.
Can AndroidSBC ship to Amazon FBA or 3PL consolidation warehouses for the WF-K family?
Answer: Yes. FBA preparation is handled at the factory for the WF-K family, so Vilnius buyers can have boards shipped directly into a Lithuania fulfilment centre with the labelling already applied.
How are RMA and DOA replacements handled on the WF-K self-service query terminal family?
Answer: RMA handling on the WF-K family runs against the lot record, so Vilnius partners get a traceable answer rather than a generic replacement, and Lithuania estates stay on matched firmware.
Contact AndroidSBC: Start Your WF-K3399 Sourcing Conversation
AndroidSBC, a Wanlin Manufacturing Group export brand, opens the following channels for the WF-K family. Vilnius integrators can reach the export desk through:
- Email: Androidsbc@163.com
- Export service hotline: +8613261677119
- Website: https://www.androidsbc.com
- Source factory address: Wanlin Group, Building B, Building 1, Beisida Medical Device Building, 28 Nantong Avenue, Baolong Community, Baolong Sub-district, Longgang District, Shenzhen, Guangdong, China
A 1-3 day sample lead applies to Vilnius and Lithuania buyers, with a 15-30 day mass-production lead on bulk orders. AndroidSBC commits to a seven-year firmware update window on the WF-K family.
