iPhone 8 Not Charging

🔍 Step 1: Identify the Symptom

• No charging indicator when plugged in: Cable, adapter, or packed port — or battery so depleted it can't show the screen
• "This accessory may not be supported": Non-MFi Lightning cable — replace with MFi-certified immediately
• Charges at certain angles only: Lint blocking pins — clean the port first
• Phone charges on Qi but not Lightning: Lightning cable or port issue confirmed — focus fixes there
• Phone charges on Lightning but not Qi: Qi coil issue — remove thick case, check coil alignment
• Very slow charging: Using the 5W cube that came in the iPhone 8 box — upgrade to 18W+ PD

🧹 Step 2: Clean the Lightning Port — Start Here

At 8+ years old, the iPhone 8 Lightning port has almost certainly accumulated a dense mat of compressed lint. This is the leading cause of charging failure in phones this age:

1. Power off the iPhone 8 / 8 Plus completely
2. Get a wooden or plastic toothpick — never metal, never a pin
3. Shine a flashlight directly into the port — compressed lint looks grey or brown and sits at the very back
4. Carefully scrape the lint forward and out of the port
5. Blow a short burst of compressed air to clear residue
6. Plug cable back in — it should now seat firmly with no wobble

This single step resolves 60-70% of iPhone 8 charging failures. Do this before anything else.

🌐 Step 3: Test Qi Wireless Charging

iPhone 8 was the first iPhone to support Qi wireless charging — this gives you a valuable diagnostic tool:

• Place the iPhone 8 on a Qi charger — if it charges wirelessly, the phone's charging system works; the problem is specifically the Lightning cable or port
• If it won't charge wirelessly either, the issue is deeper (software or hardware charging circuit)
• For wireless-only fixes: remove thick cases, clean the phone back, ensure the Qi pad is powered

🔌 Step 4: Test Cable and Adapter

1. Try a completely different Lightning cable
2. Confirm it's MFi certified — counterfeit cables cause the "not supported" error
3. Try a different adapter — the original 5W cube from 2017 can fail after 8 years
4. Test with a different wall outlet

⚡ Step 5: Fast Charging the iPhone 8

iPhone 8 was the first iPhone to support fast charging — Apple just didn't include the adapter:

• Use an 18W or 20W USB-C PD adapter with a USB-C to Lightning cable
• 0 to 50% in about 30 minutes
• Stock 5W cube: ~3 hours for full charge

🔄 Step 6: Force Restart

iPhone 8 / 8 Plus (has Home button):

1. Quickly press and release Volume Up
2. Quickly press and release Volume Down
3. Press and hold the Side button until Apple logo appears
4. Plug in charger after boot

🔋 Step 7: Battery Health — Critical at 8+ Years

iPhone 8 launched September 2017. At 8+ years, the battery has seen potentially 2,000-3,000+ charge cycles:

1. Settings → Battery → Battery Health & Charging → Maximum Capacity
2. Under 70% (likely for any iPhone 8 not yet replaced): Battery replacement is essential — degraded batteries can cause charging failures as the charging controller struggles to manage them safely

iPhone 8 battery replacement: ~$69 at Apple, $50-60 at quality third-party. The A11 Bionic chip can run iOS 16 — a fresh battery extends life for light-duty use.