Furthermore, can I use warranty without receipt?
Purchase receipt or warranty card filled will do. They had no relationship with owner without warranty card or at least purchase receipt. If still want to pursue using the “your product your logo” concept for the warranty, you will have to prove the merchandise is genuine first.
Similarly, do you need a receipt to return goods? Stores often try the "no refund or return without a receipt" line. But where an item fails, shops do not have the right to demand a receipt. A credit card slip or statement or even the say-so of a person who was present when the products were purchased, are legally enough.
Also, do you need the receipt for Apple warranty?
You don't need a receipt if Apple says it is covered. You need a receipt if they say it is NOT covered and you know you have time left on the warranty. ' An Apple Store employee or other authorized service provider can check the serial number and verify your warranty status.
What to do if you lost a receipt?
If you have lost your receipt, but have the transaction on your bank statement, the store can accept this, alongside the same card being present. Or, if you are aware of the details of purchase, i.e time/date/store/price paid, then it may be possible for the store to locate your receipt in their till system.