Q: I plugged a fan into my lightning port and now my phone won't charge

Back it up, make a Genius appointment and have it evaluated at an Apple Store. We have no way of knowing if it's repairable.

How did you plug a fan into your phone? If you think you damaged the port, make an appointment at an Apple Store to have it checked.

Make a genius bar appointment with Apple for an evaluation.

Try a force restart of the phone. This may reset the configuration of the Lightning port and allow it to charge,

See Restart your iPhone, iPad, or iPod touch - Apple Support.

iPhone as a novelty battery pack. A new one on me.

tt2

With mini USB plugs forced into Lightening jacks. What could ever go wrong...

You should never plug anything that is not MFI certified into the lightning port on your phone.

If the phone has booted up swipe away anything that could run in the background, then turn the phone off so it doesn't need to run the screen at the same time as it is charging. Give it some time to charge up before trying to turn on again. In fact probably a good idea to take if off charge and turn it off to let it cool down.

tt2

I wasn't chastising. I was trying to point out the dangers of plugging cheap junk that doesn't meet Apple's standards into the lightning port of your phone. Problems with uncertified lightning cables physically damaging iPhones are well documented.

If the phone was damaged by the fan, what needs to occur to 'correct' the charging issue is an out of warranty replacement phone from Apple.