📌 At a glance: A major global e-commerce marketplace used Increff's warehouse management system to build a quality grading and inventory serialization engine for refurbished mobile phones — going live before the Diwali 2019 sale, scaling to two warehouse locations in Bengaluru and Mumbai, and processing an average of 11,200 units per month with 2.5+ years of zero downtime.
What Is This Case Study About?
The refurbished electronics market in India is growing fast — and trust is the bottleneck. Buyers of used mobile phones need to know exactly what condition they're getting. Sellers need a system that can grade, tag, track, and move thousands of devices a month without errors. This case study is about how Increff's WMS, extended with a custom quality grading application, gave one of India's largest e-commerce players the infrastructure to run that operation at scale.
Client Overview
- Type: Large global e-commerce marketplace
- Region: India (warehouses in Bengaluru and Mumbai)
- Business Model: Mobile phone exchange program — customers trade in used devices for discounts on new purchases; used devices are graded and resold in the secondary B2B market
- Sales Channels: OLX, Quikr, retailer e-commerce platforms, B2B buyers
- Objective: Build a quality grading, serialization, and inventory tracking system for refurbished mobile phones — rapid integration required, with the Diwali 2019 sale as the go-live deadline
Challenges Faced: Why Refurbished Electronics Needs a Different Kind of WMS
Standard warehouse management systems aren't built for refurbished goods. Every unit is unique. Grading needs to be consistent. And in the secondary market, transparency about condition isn't a nice-to-have — it's the entire basis of customer trust.
1. No standardised quality grading processUsed mobile phones arrive in wildly different conditions. Without a structured, auditable grading process — assessing both hardware and software quality — condition descriptions were inconsistent. Inconsistency erodes buyer confidence, which directly affects resale value and volume.
2. No item-level serialization or trackingIn a standard WMS, inventory is tracked at the SKU level. A refurbished phone operation needs serialization at the individual unit level — each device needs its own ID, its own grade, its own audit trail. Without that, 100% tracking is impossible.
3. Audit workflows were manual and slowThe scale of the exchange program — thousands of devices moving through grading every month — made manual audit processes impractical. The brand needed a system that could handle bulk audit processing without creating a throughput bottleneck.
4. Secondary market sales require verified, documented gradesSelling to B2B buyers on platforms like OLX and Quikr requires documented, credible quality grades — not just an internal classification. The grading output needed to be trustworthy enough to underpin B2B transactions at volume.
5. Hard go-live deadline — Diwali 2019The exchange program needed to be operational for one of India's biggest retail sale periods. Rapid integration wasn't a preference. It was a requirement.
Increff's Solution: Custom Quality Grading Application Built on the WMS Core
Increff extended its warehouse management system with a purpose-built quality grading toolkit — designed specifically for the refurbished mobile phone use case, integrated directly into the core WMS rather than running as a separate system.
Explore Increff’s Warehouse Management System (WMS) coupled with its powerful Order Management System (OMS)
SKU-Level Quality Grading Based on Audit Results
Each device is graded based on a structured audit covering hardware condition and software performance. The grade is assigned at the SKU level, tied directly to the audit outcome — not an estimate, not a manual classification. Configurable audit questions and rules let the brand define exactly what each grade requires, and adjust those parameters as market standards evolve.
Individual Item Serialization and ID Sticker Generation
Every device gets a unique item ID sticker generated by the system — enabling 100% unit-level tracking from intake through grading, storage, and dispatch to B2B buyers. This is the foundation for transparent secondary market sales. A buyer on OLX or Quikr can trust the grade because the system can produce the audit trail behind it.
Bulk Audit Form Processing
To handle the volume of an active exchange program, audit forms can be uploaded in bulk directly into the toolkit — reducing the per-unit processing time and preventing the grading operation from becoming a constraint on overall throughput.
Full Integration with Increff's Core WMS
The custom grading application isn't a standalone tool — it runs fully integrated with Increff's cloud-based WMS, meaning graded inventory flows directly into the warehouse management and order management system. Real-time inventory updates, dispatch to B2B channels, and reporting all run through the same platform.
Results: Measurable Impact Delivered by Increff
"Two warehouses, two retailers, 2.5+ years online — zero downtime. The system was built to handle the Diwali 2019 rush and never needed to stop."
Key Outcomes Summary
- 16,900 refurbished mobile phones packed for B2B vendors in a single peak month — the system handled it without scaling issues
- 11,200 units per month on average processed consistently since May 2021, across two warehouse locations
- 2.5+ years of continuous operation with zero downtime — critical for an exchange program tied to live retail sale events
- 100% item-level serialization with individual ID stickers, enabling full audit traceability for every device sold in the secondary market
- Configurable grading rules let the brand adjust audit criteria without system redevelopment — useful as refurbished market standards evolve
- Scaled from one retailer to two after the initial deployment proved the model — the second, larger retailer integrated Increff WMS specifically because the first succeeded
Frequently Asked Questions
What is inventory serialization in a warehouse management system and why does it matter for refurbished goods?
In a standard warehouse management system, inventory is tracked at the SKU level — meaning all units of the same product are treated as interchangeable. Serialization goes one level deeper, assigning a unique identifier to each individual unit. For refurbished goods, this is essential. Two "Grade B" mobile phones of the same model can have very different actual conditions. Serialization means each device has its own audit record, its own grade, and its own ID sticker — so every B2B transaction is backed by traceable, unit-specific data rather than a category-level estimate.
How does a WMS support quality grading for refurbished electronics?
Out of the box, most warehouse management systems don't. Standard WMS platforms are designed for new goods with consistent, predictable quality. Increff extended its WMS with a custom grading toolkit that integrates directly into the core system — allowing audit questions to be configured per category, grades to be assigned based on structured audit outcomes, and item IDs to be generated and printed for each device. The grading output flows into the WMS inventory record, so downstream order management and dispatch are working from graded, serialized data from the start.
What is the secondary market for refurbished mobile phones in India, and how big is it?
India's refurbished smartphone market has grown significantly over the past few years, driven by a combination of rising new phone prices, sustainability awareness, and the expansion of B2B resale platforms like OLX and Quikr. Exchange programs run by major e-commerce platforms have accelerated supply into this market — collecting used devices at point of new purchase and routing them through grading and resale operations. The challenge for operators in this space is building the quality infrastructure to support transparent, trustworthy B2B transactions at the volume the market now demands.
How does a cloud-based WMS handle the real-time inventory updates needed for a mobile exchange program?
Exchange programs generate inventory in unpredictable volumes — the number of trade-ins on any given day depends on consumer demand for new devices. A cloud-based WMS handles this by maintaining real-time inventory positions as devices move through grading, so the system always reflects what's actually available at each grade tier. When a device is graded and tagged, it's immediately visible in the inventory as a sellable unit — no batch updates, no manual entries to trigger availability. This is what makes it possible to sell to B2B buyers on external platforms without risking overselling or grade mismatches.
Can Increff's WMS integrate with external B2B sales platforms like OLX and Quikr?
Yes. The order management system layer within Increff's platform is designed to expose inventory across multiple sales channels simultaneously. For a refurbished phone operation, this means graded inventory can be listed and sold across OLX, Quikr, and other B2B platforms, with order data flowing back into the WMS for pick, pack, and dispatch — all tracked at the individual serialized unit level.
How quickly can Increff's WMS be deployed for a refurbished goods operation?
In this case, the system was built, integrated, and deployed live before the Diwali 2019 sale — a hard commercial deadline with no flexibility. Rapid integration is one of the core design principles of Increff's warehouse management system. For operations with non-standard requirements — like quality grading for refurbished electronics — Increff's approach is to extend the core WMS with a custom application layer rather than building a separate system, which keeps the integration scope manageable and the go-live timeline short.
Why Increff for Refurbished Goods and Secondary Market Operations?
Most warehouse management systems are built for predictable, new-goods environments. Refurbished electronics is neither predictable nor standard. Increff's platform handles the edge cases:
- Custom grading applications built on the WMS core — not bolted-on third-party tools
- Unit-level serialization with ID sticker generation — 100% traceability for every device
- Configurable audit rules that adapt as product categories and market standards evolve
- Cloud-based WMS with proven uptime — 2.5+ years continuous operation, zero downtime
- Multi-channel order management for B2B sales across OLX, Quikr, and retailer platforms
- Rapid deployment — built and live in time for a Diwali sale deadline
Running a Refurbished Goods Operation That's Outgrown Its Current System?
If grading is inconsistent, serialization is manual, or your WMS wasn't built for the secondary market — Increff can close that gap faster than you'd expect.
Book a demo with Increff today