When an iPhone is unable to charge by USB‑C but still charges via MagSafe, it usually means the USB‑C port isn’t making a stable connection. That can be caused by debris, a bent internal pin, liquid residue, or a failing charging circuit. The MagSafe coil heating up is a separate warning sign: the phone is detecting thermal stress and slowing or stopping charging to protect the battery. When MagSafe gets hot even without a case, that’s almost always a hardware issue inside the phone, not the charger.
1) What this usually means
• The USB‑C port may be damaged or failing internally
• The charging controller may be overheating and shutting down
• MagSafe heat indicates the battery or charging circuitry is under stress
• iOS will stop charging entirely if the phone crosses its thermal limit
2) What you should do next
• Try a second known‑good USB‑C cable and charger ➡️ if it still fails, the port is almost certainly damaged
• Restart the phone and test again ➡️ if MagSafe still overheats, stop using it
• Schedule Apple diagnostics ➡️ they can check the port, battery, and charging circuit 👉 https://support.apple.com/iphone/repair
Axel F.