If your iPhone 6 or 6 Plus is overheating, rebooting, stuck with a black screen, or throwing iTunes 4013 errors, you’re not alone. Power issues like these are frustrating, but they often have specific causes — and sometimes solutions you can actually do yourself.
Below, we break down real-world problems reported by users and how you can troubleshoot them.
iPhone 6s Plus Overheating After Startup (Reported by Raphael)
Problem:
Raphael’s iPhone 6s Plus gets extremely hot in the upper right corner seconds after turning on — but stays cool if it’s in Airplane Mode. Factory resets didn’t fix the issue. It only started after dropping the phone and updating to iOS 10.
Solution:
Since the overheating only happens when the phone tries to connect to a network, and it stays cool in Airplane Mode, this points to a hardware failure triggered by the drop — not a software glitch.
Most likely causes:
- A damaged battery or connector
- A shorted screen cable or motherboard component near the screen connector
Since a full reset didn’t help, the only real fix is a hardware repair.
Take it to a professional technician to properly diagnose the parts needing replacement. Do not keep using the phone in this state — overheating can permanently damage internal components.
iPhone 6 Keeps Rebooting, Won’t Complete Restore (Reported by Cash)
Problem:
Cash’s iPhone 6 randomly reboots during restore attempts. It had previous battery issues (sudden drops, erratic charging) even after a battery replacement.
Solution:
The random rebooting during restore suggests a hardware issue, specifically with the Power Management IC (integrated circuit) on the motherboard.
- This chip regulates power distribution. If it fails, your iPhone becomes unstable no matter what battery you use.
- Symptoms: sudden reboots, unstable charging, failure to complete restores.
Unfortunately, this isn’t something you can fix yourself.
- Take it to Apple or a trusted repair technician for motherboard-level service.
- Be ready: depending on the damage, the cost of repairing a motherboard issue may not be worth it compared to replacing the phone.
iPhone 6 Black Screen, Won’t Turn On (Reported by Amgrassi)
Problem:
Amgrassi’s iPhone showed a black screen and wouldn’t power on, even after multiple iTunes restore attempts. The phone buzzed when plugged in but the screen stayed dark.
Solution:
Here’s a quick checklist to rule things out:
- Force restart the phone:
- Hold the Power + Home buttons together for at least 10 seconds.
- Charge for at least an hour using a known good Apple charger.
- Inspect the Lightning port for damage or debris.
- Try another charging cable and adapter.
If none of that works, you likely have a hardware problem:
- Could be a dead screen, bad battery, or even motherboard failure.
Next step: Bring the iPhone to Apple or a qualified repair center for full diagnostics.
iPhone 6 Plus iTunes 4013 Error After Battery Swap (Reported by Monica)
Problem:
Monica’s iPhone 6 Plus started swelling batteries and showing iTunes error 4013 during restore attempts after screen and battery replacements.
Solution:
iTunes error 4013 typically means there’s a hardware communication problem between your iPhone and the computer.
It could be:
- A bad USB cable
- A faulty USB port on your computer
- A bad charging port on the iPhone itself
- A motherboard issue (especially if tampered repairs were done)
Here’s what to try:
- Use a different Lightning cable and USB port on your computer.
- Try restoring on another computer with the latest version of iTunes.
- If the issue persists, it’s likely internal hardware damage — especially given the history of third-party battery replacement and swelling.
Bottom line:
You’ll need a professional to open and inspect the device. If major components like the motherboard are damaged, the repair cost might be high — weigh that against simply replacing the phone.