Voice Control makes it possible to perform various functions on iPhone with just voice commands. Unlocking the iPhone and revealing the Home Screen is one of the functions supported by Voice Control. Once enabled, you can invoke Face ID or enter a passcode to unlock your device just by speaking.
Need to find out if an iPhone is officially unlocked for use on multiple cellular carriers? Now you can find the answer to this question and more using a simple website. All you need is the unique IMEI number assigned to your device.
To get your IMEI number navigate to Settings -> General -> About and scroll down to IMEI. The IMEI is a unique 15-digit number. Now go to the website IMEI.info, enter this number and click the CHECK button.
Online parts vendor Apple N Berry is offering a permanent unlock solution for AT&T iPhones. According to the product page, the AT&T iPhone IMEI Unlock allows your iPhone 3G, 3GS, 4, and 4S to stay permanently unlocked even after an iOS upgrade or SIM card swap.
Unlike SIM interposers, the AT&T iPhone IMEI Unlock requires no extra software, jailbreak or hardware to unlock your iPhone. All Apple N Berry requires is that it's an AT&T handset for it to work. The AT&T iPhone IMEI Unlock is $150 and requires 1 to 2 business days to be activated. The unlock comes with a money back guarantee, however, there has been no confirmation outside of Apple N Berry that this solution works.
There's another unlocking option for GSM iPhone 4 owners looking to use their device on multiple carriers. The latest GEVEY Ultra 5.1 SIM interposer makes this possible without jailbreaking or violating your Apple warranty. Compatible with iOS 4.1 and later (through 5.1), the product supports modem firmware versions 1.59, 2.10, 3.10.1, 4.10.1, 4.11.08, and 4.12.01.
Of course, those with a jailbroken iPhone 4 can also use the GEVEY Ultra 5.1 to unlock their devices. More options are becoming available for unlocking including the SAM package method and even official unlocking of out-of-contract iPhones on the AT&T network.
AT&T has started to unlock iPhones for customers who have completed their contract obligations. The process is as simple as contacting AT&T customer support and requesting the unlock on your device. Of course, your account must be in good standing (ie. paid up to date) for AT&T to provide the service.
Once your iPhone is unlocked, you are free to install any replacement micro-SIM card from another compatible GSM carrier. This means you can use your iPhone overseas or with another US carrier such as T-Mobile without resorting to any workarounds or jailbreak unlocking methods.