Why is it that my phone can't charge

@benjaminqua2508 well, that all depends on what you have checked and what ultimate is wrong with it. You are really not giving us a lot to work with here. Did it just stop charging? what have you checked and what have you tried to fix it?

First you want to check your charger and the charging cable. Make sure it has the proper voltages. Check to make sure that the connectors are not bend etc. After that, check the charging port. Clean it of any debris etc, use a few puffs of air to clean it out. Make sure there is no corrosion, debris etc. that prevents it from working. If none of this works, get a ammeter and see if your phone draws any amperage from the charger.

You may also have to consider replacing the battery. A depleted battery can no longer be charged. Measure the voltage on your battery connector with the charger plugged in. You should get around 4.2V If you do not get this voltage If you don't get that voltage check your flex cable coming from the charging board. Make sure it is seated properly and does not have any tears or other damage on it. Your phone has a separate charging board that could be faulty. consider replacing that.

Since iFixit does not yet have a specific guide for the charging board, use something like this video

While you work on your phone, take lots of pictures. Once you are done with it, take those pictures and create a guide for iFixit. That will help the next person that has a device with the same issues as you do. It's easy and fun to create these guides. https://ifixit.com/Guide/new The iFixit community will appreciate this.

Repair is War on Entropy!