Check out the video above or the step by step guide below for assistance with this repair

iFixit iPhone 4 Battery Replacement Guide

Here are some tools you may need to help you complete the repair.

Please note: A discounted simple toolset with the tools you need is available in a pop-up when you add this product to cart

• P2 Metal Pentalobe 0.8mm Screwdriver Tool
• #000 1.5mm Metal Phillips Screwdriver Tool (PH000)
• Mechanic AK-15 King ESD Anti-Static Stainless Steel Red Curved Tweezers
• 5x iGadget Plastic Flexible Opening Cards
• Nylon Antistatic Spudger Pry Tool
• Or get the P2 and #000 screwdrivers, tweezers, opening card and spudger together in our 8 Piece iPhone Repair Toolkit
• iGadget Plastic Alcohol 200mL Bottle with Pump Top
• iGadget Universal Magnetic Work Project Mat with Marker (30cm x 25cm)

Here are some helpful tips to assist you in completing a safe repair on your device. If you are unsure of something or have any questions, please feel free to contact us either by phone (0508 IGADGET) or by email

• Drain the battery below 25% and power the phone off before you start. A charged lithium-ion battery can catch fire if it's punctured or damaged
• Remove the screws next to the dock connector. Some iPhone 4 phones have pentalobe screws and some Phillips #000, so check which you have before you start, and seat the driver firmly so you don't strip them
• Push the back panel towards the top of the phone (it moves about 2mm), then lift it off, taking care not to break its plastic clips
• Track your screws on a magnetic mat or tape them to a drawing of your phone. They're different lengths, and a long screw in a short hole can damage the logic board
• Always unplug the battery before you remove any other parts. Keep metal tools away from the battery, and never bend, crush or puncture it.
• Remove the Phillips screw holding the battery connector (some phones have a second one for the contact pad), then lift the connector from its top and bottom edges, not the sides, so you don't damage the socket
• Lift the battery out with its clear plastic pull tab. If the tab breaks, drip isopropyl alcohol under the battery edge, wait a minute, then ease it up gently with a plastic card
• Before you reconnect the battery, check the small metal contact clip sits beside the connector. Wipe the metal contact points clean, as finger oil can cause signal problems. Check the phone powers on and charges before you refit the back panel
• If the new battery drains fast or shuts off, reseat the battery connector, check it for foam or debris and make sure the flex isn't strained, then do a force restart