c/P
Go to settings, General, and About.
Scroll down through all of the provided information until you find the label which gives you the device’s “Model” number. This will give you a unique number pertaining to that device which either begins with “M”, “F”, or “N”, and then followed by a series of letters and numbers.
Step 4: If your Model number starts with the letter “M”, then it is a brand new device. If the Model number begins with the letter “F” then it is a refurbished device. And if your Model number starts with a letter “N” then it is a replacement device.
M: Brand new device
F: Refurbished device
N: Replacement device.