When it comes to the First and Second generation of the iPhone, you have to first take out the SIM tray with a small paperclip. Then remove the screws on both sides of the charging spot and take off the back cover using a little force. Detach the ribbon cable that connects the case to the motherboard and remove the display panel using a spudger. The motherboard had to removed after you have located and removed about 8 screws and a “4” ribbon cable. The replacement of an iPhone battery is a delicate task. Knowing the risks and cost of the product involved, it seems daunting. However, when the phone doesn’t hold much charge or functions with difficulty, it becomes necessary. Use the flat screwdriver to pry up the old battery and avoid touching any wires on the system. Remove the glue-held wires with the same tool and bring in a soldering iron to detach them. Taking out the battery and then replacing it should be done is exact semblance. Putting in a new battery should be easier. Experts on the famous Apple gadgets recommend people to use high-quality OEM batteries. Using this will be safe and hold a warranty of 6 months or more. Tablets offer much more flexibility and convenience to people than phones does.