Подлинность iPhone

Hello Galina231Poltnikova,

According to AI:

The model number 5YTP3 ZA/A indicates an iPhone model sold in the Singapore or Hong Kong region (ZA). The first part of the number, MTP63, points to an iPhone 15 with 256GB of storage. The first letter, "M" in this case, means it was originally sold as a brand-new device. 

Note: be wary or buying a used iPhone. See this:

Things You Need to Know When Buying a Used iPhone

Good luck.

Galina231Plotnikova wrote:

The phone model number starts with the number five , 5YTP3. There is no letter M at the beginning of the model number.

That likely indicates that the phone was refurbished by an Apple authorized facility. Any warranty, if available, would be provided by the seller.