If your iPhone will not restart, a force restart, charge check, and simple software fixes usually bring it back without losing data.
If you are staring at a black screen or a frozen Apple logo and wondering, “why won’t my iPhone restart?”, you are not alone. Restart problems usually come down to three groups: low battery or charging trouble, software glitches, or hardware faults. The good news is that most restart issues clear with a handful of clear steps that match how Apple handles frozen or unresponsive devices.
This guide walks you through quick checks, the exact force restart steps for each model, reasons your iPhone refuses to restart, and what to try before you book a repair visit. You will see both fast fixes and slightly deeper ones, all based on the same approach Apple uses in its own help pages for black screens, stuck Apple logos, and restart failures.
Quick Checks Before You Panic
Before you assume the worst, run through a few basic checks. Apple’s own guidance for iPhones that will not turn on starts with power and charging, not with cable tricks or hidden button codes. A simple power issue can easily look like a restart failure when the screen stays black or the Apple logo never appears.
- Charge Your iPhone For At Least 30 Minutes — Plug the phone into a wall charger you trust, not a laptop port. Leave it alone for half an hour, then try a normal restart before you move on to harder steps.
- Try Another Cable And Adapter — Worn cables and cheap bricks are a common reason an iPhone will not restart or power on. Swap both parts with ones that charge another device without trouble.
- Check The Charging Port — Shine a light into the port and look for lint or dirt. If you see debris, gently loosen it with a wooden toothpick or soft brush so the plug can sit all the way in.
If the battery was deeply drained, the screen may stay black for several minutes even after you plug it in. Apple’s black-screen help page notes that some iPhones need up to an hour on charge before they wake reliably, especially after a full discharge or cold weather exposure. Charging first makes every later restart step more likely to work.
Next, make sure the buttons you are pressing actually move. A stuck side button or volume rocker can stop a normal or force restart. Take off any thick case, especially one with stiff button covers, and press each button directly with your fingers to feel for normal travel and click.
How To Force Restart Any iPhone Model
A force restart is the main tool when your iPhone is frozen, the screen is black, or the touchscreen will not respond. Apple describes this as a way to restart iPhone when a normal power-off slider will not appear. It does not erase your data; it just forces the system to reload. The exact button steps depend on your model.
Force Restart On iPhone 8, X, And Later
On iPhone 8 and all newer phones with Face ID, Apple uses a three-step sequence to avoid accidental triggers.
- Press Volume Up Then Volume Down — Quickly press and release the Volume Up button, then quickly press and release the Volume Down button.
- Hold The Side Button — Press and hold the Side button. Keep holding it even when the “slide to power off” slider shows up.
- Wait For The Apple Logo — Release the Side button only after the Apple logo appears. This can take 10–20 seconds on some phones.
Apple’s current force restart instructions for these models match this exact pattern and mention that it is the right move when the device is frozen or the screen is black and unresponsive.
Force Restart On iPhone 7 And 7 Plus
The iPhone 7 line uses a different button mix for restart problems.
- Hold Volume Down And Side Together — Press and hold the Volume Down button and the Side (Sleep/Wake) button at the same time.
- Keep Holding Until The Logo Appears — Ignore the power-off slider and keep holding both buttons until the Apple logo shows up, then let go.
Force Restart On iPhone 6s, SE (1st Gen), And Earlier
Older models with a physical Home button rely on that button for restart shortcuts.
- Hold Home And Top/Side Together — Press and hold the Home button and the Top or Side button together.
- Wait For The Apple Logo — Keep both buttons pressed until the Apple logo appears, then release them and let the phone boot.
If those steps match your model and your iPhone still will not restart, move on to causes and fixes that go beyond a simple frozen screen. At this point you have ruled out the most common quick win described in Apple’s force restart guide.
Why Won’t My iPhone Restart? Common Causes
The question “Why Won’t My iPhone Restart?” usually comes back to a handful of patterns that Apple and independent repair sites list again and again. Knowing which symptom matches your phone makes it much easier to pick the right fix instead of trying random tricks.
| Symptom | Likely Cause | First Fix To Try |
|---|---|---|
| Black screen, no logo at all | Drained battery or charging fault | Charge with a known good cable and brick for one hour, then force restart |
| Stuck on Apple logo or progress bar | Update or restore stuck partway | Connect to a computer and run an iOS update in Finder or iTunes |
| Restart loop with repeated logo flashes | System glitch or damaged system files | Try a force restart, then an iOS update or recovery mode |
| Buttons do nothing, even in force restart steps | Faulty button or deeper hardware problem | Use Settings to shut down, then seek hardware repair if the side button still fails |
Apple’s help pages for iPhones stuck on the Apple logo or a progress bar explain that a failed update or restore can leave the phone in a half-started state. In that case the device needs a wired connection to a Mac or Windows PC and an iOS reinstall, not endless force restarts that never finish the boot process.
On the other hand, if the screen is fully black and the phone will not charge or show a low-battery icon, there may be a deeper battery or logic board fault. Apple’s black-screen article mentions trying a long charge, checking hardware such as cables and adapters, and then turning to service if the screen stays blank.
Fixes When Your iPhone Will Not Restart At All
When repeated force restarts and long charging sessions fail, you are in the “hard but still hopeful” zone. Apple’s articles for iPhones that will not turn on or stay stuck during startup point toward recovery mode and wired updates next. These steps take more time, yet they rescue many phones without data loss.
Try A Software Restart From Settings
If the touchscreen still works but the side button feels dead, you can trigger a power cycle from the Settings app instead of hardware buttons.
- Open Settings And Tap General — Scroll down and tap General on your iPhone.
- Use The Shut Down Option — Scroll to the bottom and tap Shut Down, then drag the slider to turn the device off.
- Start iPhone Again — After the screen goes black, press and hold the Side button until the Apple logo appears.
This path mirrors Apple’s own suggestion when buttons are damaged or unresponsive but the touchscreen still accepts taps.
Update iOS Through A Computer
When the phone will not restart because the system hangs during boot, a fresh iOS install often clears the stuck files. Apple’s guides for devices stuck on the Apple logo recommend an update through a Mac or PC before any full erase.
- Connect To A Mac Or PC — Use a USB cable to connect your iPhone to a Mac with Finder or a Windows PC with iTunes installed.
- Enter Recovery Mode — Use the same button sequence as a force restart, but keep holding the last button until you see a laptop and cable icon on screen instead of the Apple logo.
- Choose Update, Not Restore — In Finder or iTunes, choose your iPhone, then pick Update. This downloads the latest iOS and tries to repair your system without erasing your data.
If the update completes, your iPhone should restart normally. Apple notes that this process can take some time while iOS downloads and installs, so let the computer finish and leave the cable plugged in the whole time.
Use Restore Or DFU Mode Only As A Last Step
When updates fail and your iPhone will not restart, the remaining option is a full restore. That step erases the phone, so you should rely on it only when you have a fresh backup or no other path left.
- Try Restore In Recovery Mode — In Finder or iTunes, choose Restore if repeated updates fail. This reloads iOS and wipes the device, then you can bring back data from a backup.
- Reserve DFU For Expert Help — Device Firmware Update (DFU) mode rewrites low-level software. Many repair shops and Apple technicians use this for stubborn restart problems, but it is easy to misuse at home.
At the stage where restore or DFU comes up, you are already past standard home steps. If you do not feel comfortable running a full erase yourself, booking a visit with Apple or an authorized repair provider is usually safer.
When Your iPhone Restarts But Keeps Freezing
Some people ask “Why Won’t My iPhone Restart?” when the phone actually does restart, then freezes again or falls into a loop. That pattern often hints at storage trouble, a bad app, or a partial system update rather than a dead battery.
Clear Space And Remove Problem Apps
Low free space can make iOS unstable during startup, especially after updates. Sudden freezes and random restarts can show up when the phone has almost no room left for system files.
- Check Storage In Settings — Go to Settings > General > iPhone Storage and check the graph. If space is almost full, delete large videos, old downloads, or unused apps.
- Remove Apps That Crash On Launch — If the phone always freezes after opening one app, delete that app, restart the phone once more, then reinstall it from the App Store later.
Many repair guides and Apple’s own notes for restart loops mention storage and faulty apps as common triggers, so clearing both is a practical move.
Install The Latest iOS Version
Apple often fixes restart bugs and freeze issues in iOS updates. If your iPhone now starts but behaves strangely after you brought it back, an update might stabilize it.
- Check For Updates — Go to Settings > General > Software Update. If an update is listed, tap Download and Install.
- Run The Update While Plugged In — Keep the phone on Wi-Fi and connected to power while the update downloads and installs, so the process does not stop midway.
Tech repair sites and Apple’s own change logs often mention fixes for random restarts, battery drain, and freeze-during-boot problems in newer iOS releases, so staying current reduces the odds that restart trouble returns.
Reset Settings And Restore From Backup
If your iPhone restarts yet still behaves oddly, a reset of all settings or a clean restore from backup can remove corrupted preferences without touching your photos and other files right away.
- Reset All Settings — In Settings > General > Transfer or Reset iPhone, choose Reset and then Reset All Settings. This clears Wi-Fi networks, layout tweaks, and similar items but keeps your data.
- Restore From A Known Good Backup — If you have an iCloud or computer backup from before the restart trouble began, wipe the phone then restore from that backup to roll back bad changes.
Plenty of repair guides list this pair of steps as the bridge between home fixes and full hardware service, especially for restart loops that appeared after a bad app install or buggy configuration change.
When To Contact Apple For Repair
Not every “iPhone will not restart” story ends with a software fix. Apple’s advice for dead screens and stuck logos always ends with a clear note: if force restarts, long charges, wired updates, and restores do not help, the device may need hands-on service.
- Look For Physical Damage — Cracks near the Side button, dents along the frame, or a bent body can break button circuits and make restart steps useless.
- Watch For Liquid Signs — Past contact with water or other liquids, even if the phone seemed fine at first, can lead to delayed restart failures as corrosion builds up inside.
- Listen For Internal Sounds — Clicking, buzzing, or faint chirps from inside the phone when you try to restart can hint at hardware trouble, not just software.
- Note Repeated Failed Restarts — If recovery mode updates and restores complete but the phone still refuses to restart reliably, deeper board repair may be needed.
At that point, book an appointment with Apple or an authorized service shop through the official website or the Apple Store app. They can run hardware tests, confirm whether the battery, buttons, or logic board are at fault, and explain repair or replacement options based on your warranty or service plan.
By working through these checks in order, you give yourself the same restart playbook that Apple and independent repair experts use daily. Start with charge and force restart, move on to computer-based updates, clear storage and apps if the phone boots again, and shift to professional repair when none of those moves change the result. In most cases, one of these steps is enough to bring an unresponsive iPhone back to normal life.