How to change or reset your iPad's passcode, even if you don't remember what the passcode is

To reset or change your iPad's passcode, you can use the "Passcode" menu in your Settings app, or reset the entire device.

How to put your iPhone or iPad in DFU mode to fix it as a last resort

DFU mode can help you recover your iPhone or iPad using a computer.
Macworld

How to put an iPhone into recovery mode and return to factory settings

Recovery mode can be used to return your iPhone to factory settings. During the process your iPhone will be wiped and the newest version of iOS will be installed on it. Once you have restored your ...
PC Magazine

iPhone Battery Draining Fast? Adjust These Settings and Thank Me Later

Does your iPhone battery need a boost? These Apple iPhone battery tips and tricks will help get you through the times you can't get a charge. As how-to editor, Jason unpacks modern technology to help ...