iPhone 7 sometimes charges and sometimes does not.

Hi all

I have been having an issue with my iPhone 7 sometimes charging and sometimes not. I have noticed that the lighting bolt icon may be there one second, but will go away in another second. This often happens if the phone is moved or bumped slightly. I thought it might be the charging cable, so I changed cables and thought everything was good. Everything seemed to be fine for a few weeks, but now I noticed that is back to not always charging. My work around has been to make sure the lighting bolt icon is there and and that I don't touch the phone after that.

I am guessing that problem may be with the charging port.

Any help or suggestions would be greatly appreciated.