Admin desktops & Laptops Support Feb 14, 2018 #1 iPhone 4 820-2548 Schematic diagram Attachments iPhone_4_Schematics.pdf File size 356.4 KB Views 3 iphone4 LB 820-2548 schematic diagram.pdf File size 4.8 MB Views 3 LB# 820-2548 Schematic diagram (Proto)_L (iPhone4 ).pdf File size 3.1 MB Views 3 LB# 820-2548 Schematic diagram and Components placement (iPhone4 ).pdf File size 2.6 MB Views 3