4 Ways to Unlock iPhone to Use USB Accessories Without Passcode

How do I unlock my iPhone 8? I know you're supposed to connect it to the computer and put it in recovery mode but when I do, it says “unlock iPhone to use accessories.”

You may have had the experience of connecting your iPhone to a computer with USB accessories. Usually, "Unlock iPhone to use accessories" will appear on the screen. In most cases, enter the passcode to unlock the phone, and you can then proceed with data transfer and management. What to do if you forget your screen lock passcode? Here come the most effective methods for you!

• Part 1: Why You Need to "Unlock iPhone to Use Accessories"?
• Part 2: How to Disable USB Restricted Mode?
• Part 3: How to Unlock iPhone to Use USB Accessories without Passcode via Dr.Fone?
• Part 4: How to Unlock iPhone to Use USB Accessories without Passcode via iCloud?
• Part 5: How to Unlock iPhone to Use USB Accessories without Passcode via iTunes?
• Part 6: How to Unlock iPhone to Use USB Accessories without Passcode via Recovery Mode?
• Part 7: Hot FAQ about USB Accessories on iPhone.

Part 1: Why You Need to "Unlock iPhone to Use Accessories"?

The command comes from Apple’s significant privacy safeguard “USB Restricted Mode”. It means after an hour of your iOS device without being unlocked, the system cuts off the lightning port and limits it to charging only. Simply put, when your iPhone is locked for more than an hour, it needs to be unlocked to allow the connection of USB accessories. Sometimes, when you unlock your iPhone screen to use USB accessories, it can’t charge any more. 

In 2017, a password cracking tool called GrayKey launched, which can bypass any iPhone screen lock passcode. The FBI, the police, and some government agencies have all become GrayKey customers. To combat hackers including GrayKey and protect iOS users' data security, the USB Restricted Mode feature arrived with iOS 11.4.1 in July 2018 and be improved in iOS12. 

Part 2: How to Disable USB Restricted Mode?

If you find this warning annoying or your iPhone not charging when use USB accessories, disabling USB Restricted Mode is an optional solution. However, you have to remember the unlock passcode. All the steps will be presented to you next.

Step 1: Open Settings on you iPhone.

Step 2: Click on Face ID & Passcode (or Touch ID & Passcode), and then input your screen passcode.

Step 3: Scroll to the bottom of the page and find "USB accessories" in the "Allow access when locked" column.

Step 4: Click the toggle button on the right to disable this feature. 

After completing all the steps, your iPhone can connect USB accessories anytime, anywhere. However, it is very common to forget unlock passcode. Next, we will recommend four solutions to help you use USB accessories without passcode.

Part 3: How to Unlock iPhone to Use USB Accessories without Passcode via Dr.Fone?

Now, here comes an amazing App with many benefits to solve the problem for you.  This is Dr.Fone-Screen Unlock, which is very convenient and fast to use. You must be curious about it. More of its advantages will be introduced for you.

• The application is available on both Mac and Windows.
• No technical skills are required.
• It fully supports iPhone X, iPhone 11, and the latest iPhone models.
• Dr.Fone - Screen Unlock can easily unlock 4-digit or even 6-digit screen passcode, Face ID, or Touch ID.
• No Apple ID and password is needed.

Step 1: The first step, of course, is to download Dr.Fone to your computer and click on “Screen Unlock”. 

Step 2: Connect your iPhone to the computer with a lightning cable, choose “Unlock iOS Screen".

Step 3: Follow the guides to boot your device in Recovery or DFU mode. The Recovery mode is recommended for iOS lock screen removal by default. If you fail to turn on recovery mode, you can turn to activate DFU mode. DFU means Device Firmware Upgrade, and the operation is more mandatory.

Step 4: Click "Start" to download the firmware. After the download is successful, select "Unlock now" and wait a few minutes, the passcode will be removed from your device.

After that, you could set up your iPhone as a new one and unlock your screen to use USB accessories without passcode. 

There is no doubt that you may worry about losing all your data while bypassing the iPhone lock screen. But honestly, there is no tool on the market today that can preserve data to unlock an iPhone. Therefore, it is necessary to back up data in your daily life. Dr.Fone-Phone Backup provides you with a full range of data backup solutions, you can click the link below to learn more.