Sony Xperia M4 Aqua Headphone Jack Replacement

Place the phone face-down, and use a heat gun or hair dryer to evenly heat the back surface until to soften the adhesive.

Attach a suction cup to the back of the M4 Aqua by carefully pushing down on it near the top of the phone.

While Pulling on the suction cup, slide a thin plastic spacer (guitar picks work well) between the back cover and the phone. Slide it around the edges to break the adhesive seal. Be careful, but don't be afraid to use some force. You should hear a sticky breaking sound.

Remove the back cover by pulling it from the chassis. it is flexible and can be bent, be careful.

Unhook the battery connector carefully. It is possible to damage the battery if too much force is used.

Remove the battery once all of the adhesive is broken, and the connector is unplugged.

Release all connectors connecting to the motherboard.

Pry the motherboard up from the left side with the plastic pry tool and remove it.

With your fingers, detach front camera connector from the back of motherboard.

Remove the front camera.

With your fingers, or nylon spudger if necessary, remove headphone jack fastening cover, casing, and sticker.

Remove headphone jack with your fingers.