An iPhone's model number can reveal if it's new, refurbished, or a replacement unit. This information is crucial for consumers, especially in India, where purchasing options range from official stores to online marketplaces and refurbished models. A reader's experience highlights the risk of buying refurbished or demo units sold as new, often influenced by social media. Checking the model identifier is a simple way to verify a device's status, whether buying, gifting, or repairing.