Before starting, make sure you have all required tools.:
Ensure that the Oppo Realme 3 is completely powered off before beginning the repair process.
Using the plastic pry tool or a suction cup, carefully remove the back cover of the phone. Start from one corner and gently work your way around the device until the back cover is completely removed.
Locate the battery connector and use a plastic tool to disconnect it. This is crucial to avoid any electrical damage during the repair.
Use the screwdriver to remove all screws that secure the midframe. Keep these screws safely, as you will need them during reassembly.
Use plastic pry tools to lift and remove the midframe from the phone. Be gentle to avoid any damage to the internal components.
Identify the damaged component (e.g., screen, battery, camera module) and carefully disconnect it from the motherboard. Replace it with a new repuesto part and ensure it is properly connected.
Follow the previous steps in reverse order to reassemble your Oppo Realme 3. Secure the midframe, tighten the screws, reconnect the battery, and finally, put the back cover back on.
Once everything is reassembled, power on your Oppo Realme 3 to check if the new component is working correctly.
Ensure that all features of the phone are functioning properly, and that there are no loose parts or connectivity issues.
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