A law-abiding US citizen is unlikely to be interested in the version of the iPhone's firmware and modem. As for those who like to hack or unlock this device, both Americans and Russians will certainly take advantage of the delights of jailbreak and unlock. For this, basically, it is necessary to determine the version of the firmware and modem of the iPhone.
Instructions
Step 1
Jailbreak (from the English. Jailbreak - jailbreak) is the process of jailbreaking the iPhone for the subsequent installation of the online store Cydia, which allows you to download applications that have not been censored by Apple. In most cases, applications are free, which is what attracts iPhone users.
Step 2
There are several jailbreak methods. Each of them is suitable for specific versions of iPhone firmware. To find out your firmware number, go to "Settings / Settings", "General / General", "About device / About". Scroll down the menu to the "Version / Version" item (for example, 4.2.1 (8C148)).
Step 3
The firmware version is the number of the iPhone operating system (iOS) that is currently running on your phone. From time to time, Apple releases new official firmware, when installed, all previous changes (made using a jailbreak) are canceled, and the phone has to be jailbroken again.
Step 4
Unlock (from the English. Unlock - unlock) - this is hacking the iPhone modem in order to decouple it from a specific cellular operator. In the US, for example, the iPhone is always tied to a particular cellular network. In Russia, you can buy an iPhone yourself and use the services of any network you choose. Or you can buy a device in a cellular salon, then there will be a problem of binding to the operator.
Step 5
In order to unlock your iPhone, you need to know the modem number. For identification go to "Settings / Settings", "General / General", "About device / About" and scroll down the menu to the item "Modem firmware" (for example, 05.15.04).
Step 6
To choose a jailbreak or unlock method, check the firmware and modem versions of your iPhone against the table https://iphone2go.ru/svodnye-tablicy-dlja-dzhejjlbrejjka/. If you have the most recent version of the firmware, you will have to wait until someone comes up with a way to hack it.
