Factory Reset, Full Update and Patch Applying, how difference?
![Factory Reset, Full Update and Patch Applying, how difference?](https://images.droidsans.com/wp-content/uploads/2008/11/IMG_2793.jpg)
You may have experience on enter the recovery mode by turning on the phone by holding the Home key and End key (red one) and then press Alt + L, right? But who know what these things did with your phone actually? OK, I will make your clear in this...