Press and hold both buttons until you see the Apple logo. Release the Power and Home buttons. If you hold too long, you’ll enter Recovery Mode. This will delete the data, but allow you to access your device again.
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This may take a little while to complete. Swipe to start the setup process. Tap your language and region options. Tap the wireless network that you want to connect to. Sign in with your Apple ID and password.
Open the web browser on a computer or mobile device. You’ll see this at the top of the window. This may take a few minutes. Tap your desired language and region. Enter the password if one is required. If you’re asked to sign in for a previous owner’s Apple ID, you’ll need to either sign in with their login information or have them remove the device from their account at icloud. It just displays the Apple logo then shuts off.
You can look online for various methods of unbricking iOS devices. If not, you’ll need to bring your device into the Apple store. Press the Off button for a long time and press Reset. If it’s not there, go to Settings and tap Reset the same way. Try turning it off and on, and try again.