There are plenty of reasons why you may need to repair your iPhone charger port. One of the most common reasons a charger port breaks is an accumulation of gunk and debris which gets compacted into the port and causes things to break on the inside.
If your charger port is broken, you’ll need to get it repaired as soon as possible, otherwise you won’t be able to charge your iPhone or connect your iPhone to your computer to sync it with iTunes or perform DFU restores. And, on the iPhone 7 and 7 Plus, the charger port also serves as the headphone jack, which was removed on newer models of the iPhone.
Simply put, the charger port is a vital component of every iPhone and it needs to be functioning properly in order for you to use your iPhone efficiently.