If you have a DMM (digital multimeter) here's some images from the service manual for the phone that shows the charging troublshooting flowchart and also where the components mentioned in the flowchart are located on the boards.
(click on images to enlarge)
Since wireless charging is OK (presumably the battery is not draining when charging this way?), this indicates that U7003 is also OK as it is used for both normal and wireless charging as seen in this flowchart for wireless charging troubleshooting, so you shouldn't have to check it.
(click on image)
Hopefully a start