How to Fix iPhone 8 Black Screen, Mail App Bugs, and iTunes Error 4013
The iPhone 8 is one of Apple’s most polished models, but that doesn’t mean it’s immune to problems. Some users have reported frustrating issues like a black screen, buggy Mail app behavior, and iTunes error 4013. Here’s exactly how to troubleshoot and fix these problems based on real-world cases.
iPhone 8 Screen Is Black But Phone Still Powers On
Problem:
The iPhone 8 vibrates and plays sounds, but the screen stays completely black. Hard resets and changing chargers don’t help.
Solution:
Try these steps:
1. Force Restart the iPhone 8:
- Press and quickly release the Volume Up button.
- Press and quickly release the Volume Down button.
- Press and hold the Side (Power) button until the Apple logo appears.
2. Restore Using iTunes:
- Connect your iPhone to a computer with iTunes installed.
- Trust the computer if prompted.
- Select your iPhone when it appears in iTunes.
- Click Restore iPhone under the Summary tab.
- Follow prompts to wipe and restore your device.
If the screen stays black after these steps:
You’re likely dealing with a hardware failure (e.g., bad screen or display connector).
- Contact Apple Support or visit a service center for warranty repair or replacement.
iPhone 8 Mail App Not Showing Correct Number of Emails
Problem:
After restoring an iPhone 8 Plus from a backup, the Mail app shows the wrong number of emails in VIP, Unread, Flagged, and Attachments folders. The counts fix temporarily after scrolling but reset after closing the app.
Solution:
1. Force Close and Relaunch the Mail App:
- Double-click the Home button.
- Swipe up on the Mail app to close it.
- Reopen the Mail app.
2. Install All Available App and iOS Updates:
- Open App Store → Updates → Update all pending apps.
- Open Settings → General → Software Update → Install any iOS updates.
3. Enable Automatic Updates:
- Go to Settings → App Store.
- Turn on App Updates under Automatic Downloads.
4. Contact Apple Support:
If the Mail app remains glitchy even after updates, report the bug to Apple for further troubleshooting.
iPhone 8 Showing iTunes Error 4013 When Updating
Problem:
The iPhone 8 gets stuck on a white screen, flashes black, and enters Restore Mode. Attempts to update or restore through iTunes result in error 4013.
Solution:
1. Free Up Storage Space:
- Delete large files (photos, videos, unused apps) if you can access the device at all.
- iTunes error 4013 often relates to not enough free storage during an update.
2. Try a Different Cable and USB Port:
- Use a genuine Apple Lightning cable.
- Connect to another USB port or another computer if possible.
3. Force Device Into Recovery Mode Again:
- Connect your iPhone to the computer.
- Quickly press and release Volume Up.
- Quickly press and release Volume Down.
- Press and hold the Side (Power) button until you see the Recovery Mode screen.
4. Restore the iPhone (Not Update):
- Choose Restore instead of Update when prompted in iTunes.
If you continue to get error 4013 even after trying different cables, computers, and restoring:
- The problem may be hardware-related (bad NAND chip, logic board issue).
- Contact Apple Support or a certified repair technician for deeper diagnosis.