Below are some troubleshooting solutions to fix Why Won't My Iphone Charge issue:-
1. Update iOS: To ensure charging works, outdated software should never be the cause for glitches. Check Settings > General > Software Update to see if you're running the latest version.
2. Check for Liquid Damage: Observe if there are any moisture or "liquid detected" warnings on the screen while connecting your charger.
3. Limit Usage While Charging: Avoid heavy use of the phone while charging as this leads to overheating and battery wear.