Battery Not Charging No Matter What

The combination of a black spot inside the port, an immediate boot loop (turning on for 20 seconds and dying), and a history of severe overheating means this is a physical hardware failure that requires immediate inspection by a professional.

This is not a simple software glitch or a dusty port. Based on your description, here is exactly what is happening:

• Arcing / Burned Charging Pins: The black spot you noticed inside the port is likely a burn mark caused by "arcing." This happens when moisture, debris, or a tiny short-circuit creates an electrical arc between the pins, permanently damaging the gold contacts inside the USB-C port. Because the pins are burnt, the phone cannot establish a stable power connection to pull an actual charge.
• The "1% Boot Loop": The reason your iPhone turns on for 20 seconds and dies is because it has dropped below its critical battery threshold. When you plug it in, the phone receives just enough emergency power to boot up. However, as soon as the screen turns on and the phone tries to draw normal power, the broken connection fails, the battery immediately depletes, and the phone crashes again.
• Prior Overheating Warnings: Your mention of historical overheating alongside the sudden port failure strongly points to a degrading internal component, a failing battery cell, or a damaged charging controller chip on the logic board.

What you should do next:

• Stop trying to plug it in: Repetitively pushing power into a shorted or burnt charging port can cause further damage to the internal logic board or pose a safety risk.
• Do not use a wireless charger yet: Even though your phone supports MagSafe, if the internal battery or charging chip is severely compromised, forcing wireless power into it can cause extreme heat.
• Get professional repair: You need to take the iPhone 15 to an Apple Store or an Apple Authorized Service Provider. They will need to run a hardware diagnostic, look inside the port with a microscope, and likely replace either the USB-C port assembly or the battery itself.

Before you take it in, let me know:

• Do you have a Mac or a computer that recognizes the phone for even a second when plugged in?
• Is there any visible swelling or pushing on the back glass of the iPhone?

I can let you know the best way to secure your data or prepare for an Apple service appointment.

Welcome and thank you for reaching out. 🤗

There appears to be a problem with the charging port. Only a certified Apple technician can determine the cause and offer a complete solution.

Therefore, I recommend service.

Service Checklist:

• iPhone service pricing.
• Check AppleCare Coverage.
• Get your iPhone ready for service.

Service Appointment:

• Start a Service Request.

Contact Information:

• United States: 1-800-APLCARE.
• Contact Support.

Additional Support:

• iPhone Support.
• iPhone User Guide.
• Check Repair Status.

Good luck! 👋🏼😉

Smiliñ 😎 Brian | Community Volunteer

What is your battery health percentage at Settings > Battery > Battery Health? If it is below 80%, it would be difficult to rule out the battery as the cause without first replacing it.

A black spot inside your charging port may indicate a port failure if there was an electrical arc. That would best be determined by scheduling an appointment with Apple.

Genius Bar Reservation and Apple Support Options - Apple

Hello,

In addition to Mac Jim ID's comments, try charging wirelessly in the meantime:

How to wirelessly charge your iPhone - Apple Support

Good luck.