@efratnakash wrote:
I assume it is also the case elsewhere.
I'm afraid it isn't, here in Australia, and in a few other countries I know of, the person receiving the package can just use the tracking number to sign up for notifications for the parcel, no phone number or other personal information on the package required (notifications can be via SMS or email, depending on the postal service).
If a seller is using a postal system linked to eBay, all of the data provided by the buyer will be placed onto the label, but phone numbers aren't on the order details or payment notification (in general, it can depend on the device they're using), so if they are writing the details themselves, all they will usually do then is copy the details that are showing.
I will put phone numbers on an international package if requested, but because they aren't required for the postage services I use, I rarely actually put them on there (email addresses can be required, though, for international parcels anyway). I don't use either of those for parcels within Australia because I don't want packages redirected or safe-dropped when I've paid for signature required, which become options if personal details like that are on the package.
Some sellers have had complaints from their buyers about putting phone numbers on parcels, so that's likely another reason they can be reluctant to do it.
