This part is soldered on using the SMD method, so this is not a novice friendly repair. Depending on your skill level, I would plan on the repair being to difficult to manage.
If you decide to try and determine you can't do it, take the phone to a repair shop that can replace the coil for you. If you can't do it and you try, then you are likely to damage it beyond repair.
The coil can be found on a donor board, but it can also be purchased new on sites like eBay. Most shops do not sell the coil, but it is readily available on eBay.
If you need a soldering tutorial, refer to this guide or this guide, starting with the SMD soldering portion.