How to fix iPhone 6s stuck on Apple logo or boot loop

An iPhone 6s stuck on the Apple logo continuously restarts and never fully boots. This “boot loop” is typically caused by software corruption, a failed iOS update, or system file damage—not always hardware failure. You can often resolve it with systematic troubleshooting before considering repair.

Important: Some methods erase all data. If possible, back up your iPhone before proceeding using iCloud or iTunes/Finder. If the device is unresponsive, skip to the forced restore steps.

Method 1: Force Restart iPhone 6s

A force restart clears temporary memory and interrupts the boot cycle. This is the safest first step—no data loss.

For iPhone 6s and earlier:

Press and hold both the Home button and the Sleep/Wake (power) button simultaneously.
Keep holding until the Apple logo appears, then release.
Wait for the phone to finish booting.

If the iPhone still loops, proceed to the next method.

Method 2: Reset All Settings

Resetting all settings restores system preferences to defaults without erasing personal data (photos, apps, messages remain intact). This can fix corrupted configuration causing the loop.

If you can access Settings occasionally, go to Settings > General > Transfer or Reset iPhone > Reset.
Tap Reset All Settings.
Enter your passcode to confirm.
Wait for the process to complete; the iPhone will restart.

After the reset, check if the boot loop stops. If the issue persists, continue.

Method 3: Update via Recovery Mode

Recovery mode allows you to reinstall iOS without necessarily wiping data. This often resolves corrupted system files while keeping your content.

Put iPhone 6s into Recovery Mode:

Connect your iPhone to a Mac or PC with a USB cable.
Open Finder (macOS Catalina or later) or iTunes (Windows/macOS Mojave or earlier).
On the iPhone, press and hold the Home button and Sleep/Wake button at the same time.
Keep holding until the recovery mode screen appears ( cable pointing to iTunes logo). Do not release when the Apple logo shows.
The computer should detect a device in recovery mode. Choose Update (not Restore) first.

Update reinstalls iOS without erasing data. It may succeed where a normal update failed.
If Update fails or the loop returns, you must use Restore in the next step.

Method 4: Restore iPhone via iTunes/Finder

If recovery mode update fails, a full restore is necessary. This erases all data on the iPhone. Only proceed if you have a recent backup or are willing to lose data.

Ensure the iPhone is connected and in recovery mode (as above).
In iTunes/Finder, click Restore.
Confirm the action. The software will download and install a fresh iOS version.
Wait for the process to finish; the iPhone will restart.
After restore completes, set up the device as new first to verify the boot loop is resolved. Then restore your backup if desired.

If the restore fails or the boot loop persists after a clean install, the issue may be deeper—move to DFU mode.

Method 5: DFU Mode Restore

DFU (Device Firmware Update) mode is the deepest restore option and bypasses the bootloader entirely. Use this when all else fails. Data loss is certain; the device will be wiped.

Enter DFU Mode on iPhone 6s:

Connect the iPhone to your computer.
Press and hold the Home button and Sleep/Wake button together for 10 seconds.
After 10 seconds, release the Sleep/Wake button but continue holding the Home button for another 10–15 seconds.
The screen should stay black, and iTunes/Finder will detect a device in recovery mode (DFU). If you see an Apple logo, you didn’t enter DFU correctly—repeat.
Click Restore to reinstall iOS from scratch.

After DFU restore, the iPhone should boot normally. If it still loops, hardware damage is likely.

Method 6: Check for Hardware Problems

If software fixes (force restart, reset, recovery, restore, DFU) all fail, the iPhone 6s may have a hardware issue:

Faulty battery causing power instability
NAND storage failure
Logic board damage (from drops, liquid)

Visit an Apple Store or authorized repair service for diagnostics. Out-of-warranty repair costs for an iPhone 6s may exceed the device’s value—consider replacement.

Prevention Tips

Avoid interrupted iOS updates (keep the phone charged and stable).
Do not jailbreak unless necessary; it increases instability risk.
Install apps only from the App Store.
Regularly back up your iPhone to iCloud or a computer.

Boot loops are frustrating, but methodical troubleshooting usually fixes them without needing a new phone. Start with the least invasive steps and escalate only as needed.