The iPhone 6S Plus might still be a solid daily driver, but like any aging device, it can develop problems. One of the most frustrating issues users report is the phone showing the Apple logo, then turning off—or refusing to charge or boot properly.

Here’s a full guide to help you troubleshoot and fix these common iPhone 6S Plus problems.

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Problem 1: iPhone 6S Plus Shows Apple Logo Then Turns Off

The Situation:

• You see the Apple logo for a few seconds.
• Then the screen turns black.
• It repeats over and over without booting up fully.

What’s Happening:
This often points to a hardware issue—likely a bad battery or a faulty charging IC (internal chip)—especially if restoring through iTunes didn’t solve it.

What You Should Do:

• Since a full restore didn’t help, you’ll need to take your iPhone to an authorized service center.
• A technician can test the battery and motherboard components to find the exact cause.

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Problem 2: iPhone 6S Plus Won’t Charge Properly

The Symptoms:

• Plugging in the charger does nothing.
• Battery percentage drops fast (3% to 1% in seconds).
• A friend’s phone charges fine with the same charger.

How to Fix It:

1. Clean the charging port using a can of compressed air.
2. Force restart your iPhone:
   • Hold the Home button + Sleep/Wake button together for about 10 seconds until the Apple logo appears.
3. Try a different charging cable and wall adapter.
4. Charge your phone for at least 20 minutes and check for signs of life.

If these steps don’t fix it, your iPhone may have internal charging damage. Head to a service center for diagnosis.

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Problem 3: iPhone 6S Plus Stuck on Black Screen with Apple Logo

The Situation:

• After transferring data from another iPhone, the new iPhone 6S Plus won’t fully boot.
• Stuck on a black screen with only the Apple logo showing.

Quick Fixes to Try:

1. Charge the iPhone for at least 20 minutes.
2. Force a restart (Home + Sleep/Wake buttons for 10+ seconds).
3. If restarting doesn’t work, restore via iTunes:
   • Connect the phone to a computer.
   • Open iTunes (latest version).
   • Put the iPhone into recovery mode and restore.

If restoring fails, the device might have a deeper hardware fault and will need service.

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Problem 4: iPhone 6S Plus Won’t Turn On

The Symptoms:

• iPhone won’t respond for hours.
• Only the Apple logo appears briefly but doesn’t fully boot.
• Turns on randomly after a few hours, then shuts off again.

Possible Causes:

• Deep battery drain or damage.
• Failing internal power circuits.

What to Try:

1. Clean the charging port.
2. Use different chargers and cables to make sure it’s not a charger issue.
3. Charge for at least 20 minutes and watch for signs of charging (even if no icon appears immediately).
4. Force restart your iPhone (Home + Sleep/Wake).

If the problem keeps happening, service is needed to check for a bad battery, charging IC issues, or deeper hardware faults.