Check any warranty by serial number.
Locate the serial, verify coverage on the brand's portal, and keep a dated record - so you always know exactly how long you're protected.
Find the serial number
Look on the product body, the box/barcode label, the battery compartment, or in Settings → About on smartphones. For appliances it's usually on a sticker at the back or base.
Note the purchase date
Your invoice date starts the warranty clock. Keep the tax invoice - brands verify the serial against a valid proof of purchase.
Check on the brand's portal
Most brands have a 'warranty status' or 'verify product' page where you enter the serial/IMEI to see the coverage window. Some show it inside their app instead.
Cross-check the coverage
Confirm the warranty end date, what's covered, and any registration requirement. Screenshot the result so you have a dated record.
Where to verify, brand by brand
How do I check a warranty by serial number?
Find the serial number on the product or its box, note your invoice date, then enter the serial on the brand's official 'warranty status' or 'verify product' page (or in their app). It shows the coverage window; screenshot it for your records.
Where is the serial number on my product?
Common spots: a sticker on the body or base, the original box/barcode label, the battery compartment, or Settings → About on phones (serial/IMEI). Audio gear often prints it inside the charging case.
Do I still need the invoice if I have the serial?
Usually yes. Brands verify the serial against a valid proof of purchase to confirm the purchase date and ownership. Keep the tax invoice with the serial.