Inventory · 6 min read
How to Track IMEI Numbers in a Phone Shop
A practical guide to IMEI and serial tracking in a phone shop, from receiving stock to warranty claims and returns.
Retail Operations Desk · · updated
Key takeaways
- Track every handset as its own unit, keyed by IMEI or serial, not just as a quantity on a product line.
- Capture IMEIs when stock is received, not when it is sold, so every unit on the shelf is already traceable.
- Print the IMEI and the warranty on the invoice so a claim can be matched to the exact sale in seconds.
- Record dual-SIM handsets with both IMEIs, and record local status such as PTA registration as an attribute.
If you run a phone or electronics shop, the IMEI is the single most important number in your stock. It is the difference between “we sold a phone like that” and “we sold this phone, to this customer, on this date, with this warranty”. This guide walks through tracking IMEI numbers from the moment stock arrives to the day someone walks back in with a claim.
Why should a phone shop track IMEI numbers per unit?
Per-unit IMEI tracking lets you prove which exact handset was sold, to whom, when and at what price. That proof is what settles warranty claims, blocks fraudulent returns, answers police enquiries about stolen devices and shows where a missing unit went. Counting phones as a quantity only tells you how many you have.
A phone shop that tracks quantities only can tell you it has seven units of a model in stock. It cannot tell you that one of those seven was swapped by a customer who returned an older, damaged handset in the new box. With per-unit tracking, the returned IMEI either matches the sale or it doesn’t, and the conversation is over.
What problems does it solve day to day?
- Warranty claims: match the claim to the original invoice and its warranty period in seconds.
- Box swaps on returns: the IMEI on the returned device must match the IMEI sold.
- Staff accountability: every unit has a receiving record and a sale record with the user who made it.
- Supplier disputes: if a batch from one supplier has a fault, you can list exactly which IMEIs came from that delivery.
- Theft and blacklist enquiries: you can answer “did this device pass through your shop?” with a record, not a memory.
What is the difference between an IMEI and a serial number?
An IMEI (International Mobile Equipment Identity) is a 15-digit number that identifies a device on mobile networks; dual-SIM phones have two. A serial number is the manufacturer’s own identifier, used on almost all electronics. Phones carry both. Accessories, tablets without SIM slots and laptops usually carry only a serial.
| Identifier | Where you find it | Which items have it | Length / format |
|---|---|---|---|
| IMEI | Box label, SIM tray, dialing *#06# | Phones, SIM-enabled tablets, some smartwatches | 15 digits; two on dual-SIM devices |
| Serial number | Box label, device settings, back panel | Phones, laptops, tablets, consoles, earbuds, chargers | Varies by manufacturer, letters and digits |
| Barcode (EAN/UPC) | Box label | Every retail-packed product | Identifies the model, not the unit |
The barcode on the box identifies the model and colour, so every unit of the same model shares it. The IMEI and serial identify the unit. That is why a phone shop needs both: the barcode to find the product quickly, the IMEI to pick the exact unit.
How should I record dual-SIM phones?
Record both IMEIs against the same unit. Most shops store the first IMEI as the unit’s main identifier and the second in a note or a second field, so a lookup by either number finds the device. Make it a rule at receiving: dual-SIM model, two numbers, every time.
How do I capture IMEIs when stock arrives?
Capture IMEIs at receiving, by scanning the IMEI barcode on each box as you enter the purchase. Each scanned number becomes a unit in stock, linked to the supplier, the purchase date and the cost. When the purchase is saved, every unit on your shelf is already traceable.
- Create or open the purchase for the supplier delivery (or receive against an existing purchase order).
- Pick the product by scanning the model barcode.
- Scan each IMEI from the box label. A scanner reads the IMEI barcode directly; typing 15 digits by hand invites mistakes.
- Check the count: the number of IMEIs entered must equal the quantity received.
- Save the purchase. Stock goes up by exactly the units you scanned, each one identifiable.
What if a box has no IMEI barcode?
Dial *#06# on the device to show the IMEI on screen, or read it from the SIM tray, and type it carefully. Double-check the last digit, which is a check digit calculated from the others: a single typing slip usually produces an invalid number.
How does selling work with IMEI tracking?
At the counter, the cashier scans the model barcode, then scans or picks the IMEI of the unit in the customer’s hand. The sale records that exact unit, removes it from available stock, and prints its IMEI on the invoice. The customer leaves with a receipt that names their phone.
This step matters more than it looks. If the cashier picks “any unit” from a list, the record says the wrong phone left the shop, and the first warranty claim exposes it. Train staff to scan the IMEI from the box they are handing over, not to choose from a dropdown.
How should warranties appear on the invoice?
Attach a named warranty to the product, such as “12-month shop warranty” or “6-month accessory warranty”, and the invoice shows the warranty name and its end date alongside the IMEI. When a customer returns, the invoice and the system tell the same story: this unit, this warranty, valid until this date.
| Item type | Typical shop warranty set-up | What to print on the invoice |
|---|---|---|
| New sealed phones | Manufacturer warranty plus your own replacement window | IMEI, warranty name, end date |
| Used / refurbished phones | Your own shop warranty | IMEI, condition grade, warranty end date |
| Chargers and cables | Short shop warranty | Serial if present, warranty end date |
| Laptops and tablets | Manufacturer warranty | Serial number, warranty name |
The warranty lengths in that table are typical choices, not rules; set the warranties that match your own policy and your suppliers’ terms.
How do I handle returns and warranty claims?
Look up the IMEI first, before anything else. The lookup shows the sale, the date, the price and the warranty attached. If the warranty is still valid, record the sell return or open a repair job sheet against that unit. If the IMEI does not match any sale, you are not looking at your phone.
Step by step at the counter
- Ask for the device and read its IMEI (*#06# or SIM tray), not the box.
- Search the IMEI. Confirm it matches a sale from your shop.
- Check the warranty end date shown against today’s date.
- Inspect the device and note its condition.
- Either record a sell return (the unit goes back into stock, or into a faulty-stock location) or open a repair job sheet with the fault description.
- If the fault goes back to the supplier, record a purchase return so the supplier ledger reflects the credit you expect.
How do I record PTA status for phones in Pakistan?
Record PTA status as an attribute of each unit or product, for example “PTA approved” or “non-PTA”, and verify it against the official Device Identification, Registration and Blocking System before selling (PTA Device Identification (DIRBS)). The software stores what you enter; checking the status with PTA stays your shop’s job.
In Pakistan’s mobile markets, PTA status changes the price a handset sells for and what a customer can do with it. Making it visible on the product, the shelf label and the invoice avoids the most common after-sale argument in the trade: “you didn’t tell me it was non-PTA”.
What reports help a phone shop most?
The most useful reports for a phone shop are stock by IMEI (what is physically here), sales by product with profit (what sells and what it earns), units by supplier (who sent what), and warranty and repair activity (what comes back). Together they show margin per model and which suppliers send faulty batches.
How RetailPOS Studio handles it
RetailPOS Studio lets you turn on IMEI or serial numbers per product, scan them when you receive a purchase, pick the exact unit at the counter and print the IMEI with a named warranty on the invoice. Returns and repair job sheets attach to the same unit, so its history stays in one place. See warranties and serials, repairs and purchase orders, or read how mobile phone shops set it up. For shops in Pakistan, the Pakistan page covers rupee pricing and WhatsApp support, and pricing shows the Stockroom plan that includes serials and warranties.
