iPhone 15 Pro Not Charging

🔍 Step 1: Identify the Symptom

• No charging indicator when plugged in: Cable, adapter, or dirty port
• Stopped at 80%: Optimized Battery Charging — intentional
• MagSafe not working but USB-C works: MagSafe case/alignment issue
• USB-C charges but very slowly: Passive cable or low-wattage adapter
• Phone gets very hot while charging: Thermal protection — iOS limits charging when too hot

📡 Step 2: USB-C vs USB 3 Cable Confusion

iPhone 15 Pro has a USB 3 (10Gbps) port — but this only matters for data transfer. For charging, any USB-C PD cable works:

• For charging: Any USB-C cable with Power Delivery support works fine
• For USB 3 data speeds (video transfer, etc.): Requires a USB 3.2 or Thunderbolt cable — the cable included in the box is one of these
• Common confusion: People buy USB 3 cables for data and use cheap passive cables for charging — the passive cable limits to 5W, causing very slow charging
• Recommended: 20W+ USB-C PD adapter with a PD-rated cable for normal charging; 27W PD for fast charging

🔥 Step 3: Heat and Thermal Charging Limits

iPhone 15 Pro was notably reported to run warm — Apple fixed the worst of it in iOS 17.0.3, but the titanium frame conducts heat differently than aluminum:

• Remove the case when charging — cases trap heat and can trigger thermal limiting
• Don't use the phone intensively while fast charging — gaming or video streaming while charging generates significant heat
• Charge in a cool environment — charging at room temperature (20-22°C) vs a warm room (28°C+) makes a real difference
• If charging slows dramatically after 15-20 minutes, thermal protection is active — this is normal and protects the battery

🧲 Step 4: MagSafe Troubleshooting

• Metal cards or objects in case interfere with magnetic alignment — remove case and test
• iPhone 15 Pro MagSafe charges at 15W (standard) — same as iPhone 14 Pro, unchanged from the 25W bump in iPhone 16
• Clean back of phone and charging face of puck with dry cloth
• If MagSafe snaps but doesn't charge: try a different MagSafe puck or USB-C adapter powering it

🧹 Step 5: Clean the USB-C Port

1. Power off the iPhone 15 Pro
2. Use a wooden or plastic toothpick
3. Inspect with flashlight — debris at port back
4. Gently remove, then compressed air
5. Cable should seat firmly with no wobble

⚙️ Step 6: Optimized Battery Charging

1. Settings → Battery → Battery Health & Charging → Optimized Battery Charging
2. Stopped at 80% = this feature is active. Disable temporarily or let it complete naturally
3. Long-press the charging notification → "Charge Now" to override without fully disabling

🔄 Step 7: Force Restart and iOS Update

Force restart: Volume Up → Volume Down → hold Side button until Apple logo.

iOS update: Settings → General → Software Update. iOS 17.0.3 specifically addressed heat/charging issues on iPhone 15 Pro — if you're on an older version, update now.