3GS HOT PRODCUTS : Gold Business Batteries 2430MAH made in Japan Battery for IPHONE phones|battery battery charger|battery weldbattery theory - AliExpress
Looking inside an iPhone 4/4S battery | Rip It Apart - Jason's electronics blog-thingy
How to replace the vibrator assembly in your iPhone 3G or 3GS | iMore
It seemed like it was getting bigger, then the screen popped off" iPhone 3Gs : r/techsupportgore
iFixit details which parts you can swap between the iPhone 8 and iPhone SE - 9to5Mac