Is it possible that iphone 12 pro max model number on box and on iphone about are different

Here are the iPhone 12 Pro Max model numbers from > Identify your iPhone model - Apple Support

Model numbers: A2342 (United States), A2410 (Canada, Japan), A2412 (China mainland, Hong Kong, Macao), A2411 (other countries and regions)

The A-models are the products offered for sale, and the M-models are the specific devices shipped.

You buy an A, you get a box containing an M.

The A is the same for many iPhone 12 Pro Max devices, while the M models vary—there can be one A and thirty or fifty different M numbers, depending on the particular details.

For instance, locate the iPhone 12 Pro Max here: https://www.theiphonewiki.com/wiki/Models

Or easier than chasing down the M model code, visit the Apple website or—if the Apple Store or an Apple reseller is open where you are—visit the store and have a look around at what is available, and order what you want.

Here is the Apple website for the iPhone 12 Pro Max: iPhone 12 Pro and iPhone 12 Pro Max - Apple

They should not be different, no.

What are you seeing?

Are you actually in the US?

And exactly what model numbers are you (or your friend) seeing?

Well, without accurate model numbers it is difficult to offer accurate advice. However, all models of iPhones have 2 different numbers, one such as A1234, and MxxxLL/A.

No, I’m saying that two model numbers are visible on the box, and within settings.

For my iPhone SE, on the box it shows:A2275 and MHGE3VC/A. Those numbers are also shown within settings.