Question about Samsung Galaxy A51

There are three links in the chapter "Return and guarantee":

Returns and warranty
To file a return or a warranty claim, you can use our simplified returns process: (Link->) "Returns and warranty".
Please use our simplified process in the customer account. This will also take into account any warranty extensions you may have purchased. This will ensure that your case can be processed as quickly and easily as possible.
Our (Link->) "Return policy" and (Link->) "Guarantee policy".

In my opinion, all options are described in detail under these links.
If possible, you should have the delivery person confirm damaged packaging on receipt of the consignment and report it via the above link.

This is only the 1st message in case of transport damage.
Further down 2nd message whom unit (DOA = Dead on arrival = does not run on arrival.
Then 3rd message 24 months (aJ)

Below the details of the product

30 days return policy
Is the product damaged, incomplete or without original packaging? Then unfortunately we cannot take it back.

Defect on receipt (DOA) 14 days Bring-Ini
Warranty 24 months Bring-Ini