1- Turn off your iPhone 4. 2- Open iTunes on your computer and connect the iPhone 4 to a computer (you must have iTunes installed on your PC or Mac). 3- When you connect it, the Apple logo will appear on your phone, press and hold the center Home button or lower Volume (iPhone 7 or higher) and the power button. Vay Tiền Trả Góp Theo Tháng Chỉ Cần Cmnd Hỗ Trợ Nợ Xấu.

hard reset iphone 4