Fix iOS 11/iOS 12 Boot Loop on iPhone without Data Loss
Some problems come along with every major upgrade of iOS, such as reboot loop. Unsurprisingly, many iPhone users come across random restart on iPhone after iOS 12 or iOS 11 update. On Apple developer forums, many iPhone users with Vodafone are faced with iOS 12/11 reboot loop.
"I've also seen issues with Vodafone (UK) and iOS11 resulting in slow running & freezing of the phone and getting stuck in a reboot loop. This is on an iPhone 6S dedicated to testing upgraded both via a OTA from 10.3 and a restore via itunes."
For a specific reason or not, your iPhone can get stuck on reboot loop after iOS 11 and iOS 12 update. What really matters is how to fix iPhone boot loops or crashes without data loss. Read on and get this issue sorted.
Way 1. Hard Reset iPhone
This is versatile solution to all iPhone problems: crash, freeze, apple logo, random restart, etc. It is easy but sometime indeed a feasible solution. Press and hold both the Sleep/Wake and Home (Volume Down button for iPhone 7) buttons for at least 10 seconds, until you see the Apple logo.
If you are using the latest iPhone XS, XS Max, XR or iPhone X, 8, 8 Plus, then press the volume up and down button. Then, long press the side button till the Apple logo appears and the device restarts.
Way 2. Repair iOS System to Fix iPhone Stuck on Reboot Loop
This is another way of fixing iPhone bootloop after iOS 11/12 update. It is similar with iTunes restore but the basic difference is all data keep fine after system recovery. iOS Fix Tool ReiBoot from Tenorshare is committed to fix all iOS stuck by repairing iOS system without data loss. It can fix most system crashes/errors/stuck, including reboot loop, recovery mode, DFU mode, black screen, apple logo, iTunes logo screen, system crash, and so on.
Step 1. Start Tenorshare ReiBoot and connect your iPhone which reboot randomly or keeps restarting to computer. Choose "Fix All iOS Stuck" and then "Fix Now (All iOS 11 Stuck)".
Step 2. As your device is not in working status, you will have to put it into Recovery Mode (or DFU Mode) to make Tenorshare ReiBoot detect it.
Step 3. Once Tenorshare ReiBoot detects your iPhone, it will display the matching firmware version for downloading.
Step 4. Click Download to download the ipsw file. Tenorshare ReiBoot will start repairing operating system when the firmware file is downloaded successfully. It takes you 10 minutes the whole process.
After system recovery, your device will get back to normal and all data kept. It will never get stuck in boot loop or Apple logo stuck again. Hope the two methods did the trick to fix iPhone stuck on boot loop after iOS 11/iOS 12 update.
Way 3. Restore iPhone with iTunes
iTunes restore can solve many iOS problem but the defect is that all data will get lost after restore. If you recently backed up your iPhone, go ahead and restore your iPhone with iTunes.
Step 1. Connect your iPhone to your computer and launch the iTunes app on your computer.
Step 2. Select your iPhone in the app, click on the tab that says Summary, and find and click on the option that says Restore iPhone.
Step 3. Follow the on-screen prompts and you will be able to reset your device to the factory settings.
Way 4. DFU Mode Restore iPhone
Try to restore your iPhone with iTunes and iTunes cannot recognize your device. In this case you need to put your iPhone into DFU mode and then restore it with iTunes. The downside of this method is it erases data from your iPhone as well.
Step 1: Put your iPhone into DFU mode.
Step 2: Run iTunes and connect your iPhone to iTunes. You can see a popup window showing iPhone has been detected in recovery mode.
Step 3:You need to hit 'OK' followed by 'Restore' and then confirm your selection.
Way 5. Contact Apple for Help
If the issue didn't get resolved with any of the above methods, there are chances that the iPhone has some hardware issues that you are unable to figure out. Immediately make an appointment with Apple Store and get the iPhone checked. The issue will get resolved by the experts.