I just read this on Reddit (source link) and thought it would be interesting to share. Here is what the first letter in your model number stands for:
F - Refurbished unit
M - Retail unit
N - Replacement unit
P - Engraved unit
And if you want even more information, I found this link that has all sorts of interesting info: https://www.theiphonewiki.com/wiki/Models
F - Refurbished unit
M - Retail unit
N - Replacement unit
P - Engraved unit
And if you want even more information, I found this link that has all sorts of interesting info: https://www.theiphonewiki.com/wiki/Models
