Before you begin Read this website's Legal Guidelines and make sure you understand the risks of this repair. Place your iPhone 3GS on a clean flat and soft surface, such as a rubber mat or a piece of soft cloth and get the required opening tools and suction screen lifter.
		Follow the steps of the iPhone 3GS ringerswitch replacement guide until you removed the front panel.
		Step 2   Once the iPhone 3GS logic board has been removed, it should look like this.
		Step 3 Remove the first screw of the attenna as demonstrated.
		Step 4   Carefully ease off the iphone 3GS wifi antenna flex cable.
		Step 5 Side view of the missing iPhone 3G 3GS silent switch.
		Step 6 There will be two phillip screws holding the silent vibrator in place. Remove them.
		Step 7 Once the screws have been removed, the switch should be free from the iPhone casing.
		Step 8 Side view of the Silent vibrator switch on the iphone 3G 3GS model.