What is a73 samsung?

As an AI language model, I don't have access to the latest information about the devices based on different brands and models. However, based on some online resources, the Samsung A73 is currently not a product that Samsung has officially announced or released. It is possible that this model name could be a typo, a rumor, or a prototype that hasn't been confirmed yet. Please let me know if you have any specific questions, I will be happy to help you to answer them.