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Is the seller's bill real? How to check a GST invoice for a second-hand phone

A bill makes a used phone feel safe, but bills can be edited, copied or belong to a different handset. These checks take about ten minutes and need nothing but your own phone.

By the OwnVouch team16 Sep 20266 min read

Quick answer: Take the GSTIN printed on the bill and search it on the GST portal's Search Taxpayer page. The business name and address should match the bill, and the registration should have been active on the invoice date. Then match the IMEI on the bill to the phone (dial *#06#) and the box, and check the invoice has the details a GST tax invoice must carry. A genuine bill still doesn't prove the phone isn't stolen, so run the free KYM check on the IMEI too.

What a genuine GST tax invoice must show

Under rule 46 of the CGST Rules, 2017, a tax invoice from a GST-registered seller must include, among other things:

Required detail	What to look for on a phone bill
Supplier's name, address and GSTIN	A 15-character GSTIN, and a shop name and address you can check
A consecutive serial number, unique for the financial year	An invoice number, not a blank or a handwritten scrawl
Date of issue	A date that fits the seller's story about when they bought it
Recipient's name and address (for an unregistered buyer, required where the value is ₹50,000 or more)	The original buyer's name, on any phone bill of ₹50,000 or more
Description of goods, and an HSN code (the rules let some classes of business leave it out)	Brand, model and usually storage and colour
Taxable value, tax rate and tax amount (CGST and SGST, or IGST)	A tax breakdown that adds up to the total
Signature or digital signature of the supplier	A signature, or a digital signature on an electronic invoice

Rule 46 doesn't require the IMEI. Even so, many phone invoices list it, and the government's CEIR site says you may find the IMEI on the bill. If it's there, it's the most useful line on the page.

Step 1: Look up the GSTIN

Go to services.gst.gov.in and choose Search Taxpayer, then Search by GSTIN/UIN. You don't need to log in.
Type the GSTIN exactly as printed, enter the captcha and search.
According to the GST portal's user manual, you'll see the legal name, trade name, effective date of registration, constitution of business, principal place of business, date of cancellation if any, and return filing details.

Then compare:

No result, or an error: the GSTIN doesn't exist or has been mistyped. Check one more time, then treat the bill as unreliable.
A different business: for example, a textile trader's GSTIN on a phone store bill. Walk away.
Cancelled before the invoice date: a business with a cancelled registration shouldn't be issuing GST tax invoices after that date.
Registered after the invoice date: the same problem in reverse.
Different city or state: big chains have many registrations, but the address on the bill should still make sense.

A GSTIN combines a state code, the business's PAN and a registration number, as The Quint explains. A bill whose GSTIN state code doesn't match the store's state is worth a question.

Step 2: Match the bill to the phone in your hand

Dial *#06# on the phone. Dual-SIM phones show two IMEIs.
Compare them digit by digit with the bill and the box label.
Check the model, storage and colour on the bill against the phone's settings.
Send KYM <IMEI> by SMS to 14422, or use the Sanchar Saathi app or website. The reply should show the same brand and model and must not say blocked or invalid. Our guide to checking whether a second-hand phone is stolen explains the results.
For an Apple device, you can enter the serial number on Apple's coverage checker. If the coverage it shows doesn't fit the purchase date on the bill, ask the seller to explain.

A bill for the same model with a different IMEI is not a bill for this phone. One DesiDime thread describes a buyer who paid for a counterfeit handset that came with a genuine-looking original bill. The IMEI didn't check out, and the seller stopped responding.

Step 3: If the phone was bought online

For an online purchase, the order and its invoice usually sit in the original buyer's account. Ask the seller to open the order in their shopping app or website while you watch. Check that the order shows the same model, a delivery date that fits, and an invoice matching the one you were given. A seller who "can't access the account" but has a crisp PDF is a reason to slow down. It doesn't have to be a reason to accuse anyone.

Red flags of a fake or unreliable bill

A handwritten cash memo with no GSTIN, for a phone that would normally be sold with a tax invoice.
A GSTIN that doesn't exist, belongs to another business, or was cancelled before the invoice date.
No invoice number, no tax breakdown, or tax amounts that don't add up.
No buyer name on a bill of ₹50,000 or more.
An IMEI on the bill that doesn't match *#06#, or no IMEI at all on a bill from a store that normally prints it.
Uneven fonts, misaligned text, or a total in a different typeface. These are signs a PDF or photo has been edited.
Only a photo or WhatsApp forward of the bill, with the seller unwilling to show the original.
A store you can't find or phone, or the seller discouraging you from calling it.
A far-below-market price, combined with urgency.

A bill in someone else's name isn't automatically a problem. Gifts and earlier resales happen. But the seller should be able to explain the chain, and ideally show a receipt from the previous sale.

A real bill proves that someone once bought a phone of that model. It doesn't prove that the person selling to you owns this one, or that it hasn't since been lost or stolen. Thieves can take the box and bill along with the phone. That's why the IMEI match and the KYM check matter as much as the GSTIN.

If you've spotted a fake

Before paying: walk away. There's no need to argue.
After paying online to a fraudulent seller: call the national cyber crime helpline 1930 as soon as possible, or report at cybercrime.gov.in. Keep the listing, chats, the bill image and the payment ID.
If the phone turns out to be reported stolen: see what to do if your second-hand phone is blocked or traced by police.

If you're buying from a shop, a dealer's own invoice is usually more useful than a previous owner's old bill. See the IMEI check rules for used-phone shops.

Where OwnVouch fits

OwnVouch can't tell you whether a bill is genuine, and it doesn't prove legal ownership. Its free public lookup needs no account. Type the serial or IMEI to see whether the device is registered on OwnVouch, whether it has been flagged lost or stolen there, and what it is. It never shows the holder's identity. A clean lookup isn't proof a phone isn't stolen. In the app, now in closed beta, a holder can attach evidence such as a receipt or box label when registering. A handover both parties confirm then reissues a one-page Certificate to the new holder.

Is the seller's bill real? How to check a GST invoice for a second-hand phone

What a genuine GST tax invoice must show

Step 1: Look up the GSTIN

Step 2: Match the bill to the phone in your hand

Step 3: If the phone was bought online

Red flags of a fake or unreliable bill

If you've spotted a fake

Where OwnVouch fits

Sources