How to Figure out the Baseband on an iPhone (with Pictures)

The iPhone is a series of internet-connected smartphones and multimedia devices designed by Apple Inc. The iPhone’s baseband is essentially the firmware of its cellular modem, which is used to communicate with cellular carriers and establish data connections. Baseband upgrades are frequently released by carriers to improve the cellular modem and prevent the device from being unlocked and used on a different carrier. This article will teach you exactly how to figure out the baseband your iPhone is currently using.
STEPS

1

TAP THE “SETTINGS” ICON FROM YOUR IPHONE’S HOME SCREEN.

2

TAP THE “GENERAL” TAB.

3

TAP THE “ABOUT” TAB.

4

SCROLL DOWN TO THE BOTTOM OF THE “ABOUT” PAGE. Your baseband is the number beside “Modem Firmware”.
TIPS
Unlocking an iPhone is a modem firmware or baseband specific process. You should confirm that the jailbreak or unlocking process you are considering is compatible with your current modem firmware version.
WARNINGS
Altering your baseband or unlocking your iPhone may violate the terms of use of your cellular carrier and warranty of your iPhone.