If an iPhone shuts down and won’t start, charge it for 30 minutes, force restart, then use recovery mode on a computer if the screen stays black.
When a handset powers down and refuses to wake, common culprits are a drained battery, a stalled process, bad accessories, heat, cold, or liquid. Use these steps in order: power and cables, buttons, software recovery, then service.
Quick Checks Before You Worry
Start with the basics. Use a trusted adapter and cable. Remove heat-trapping cases. Charge for half an hour, then try the steps below.
| Symptom | Likely Cause | What To Do First |
|---|---|---|
| Black screen, no chime | Empty battery or cable/brick issue | Charge 30 minutes with a known good adapter and cable |
| Logo appears, then goes dark | Software stall | Use the force restart combo for your model |
| Connect to computer icon | Recovery needed | Restore with a Mac or PC |
| Gets warm and shuts off | High or low ambient temperature | Move to 0–35°C range, let it cool or warm |
| No charge symbol | Dirty or damaged port | Inspect and gently clear debris; try another cable |
| Wet exposure suspected | Liquid in connector | Unplug and let it dry; avoid charging until dry |
iPhone Won’t Power On Fixes With Clear Steps
This section walks through a reliable order of operations. Work top to bottom and test after each step.
1) Give It A Real Charge
Plug into a wall outlet with a quality 20W+ USB-C power adapter and a fresh cable. Leave it connected for at least 30 minutes. If you see the low-battery icon, wait for ten percent before waking the screen. Keep the phone between 0º and 35º C so charging doesn’t pause.
2) Try The Right Button Combo
On models with Face ID: press and quickly release Volume Up, press and quickly release Volume Down, then hold the Side button until the logo appears. Keep holding even if it takes longer than ten seconds. On models with a Home button: hold the Home button and the Side (or Top) button together until the logo appears. This force restart does not erase data; it just clears a hung process.
You can verify the exact sequence on Apple’s guide for force restart.
3) Rule Out Cable, Brick, And Port Problems
Swap both the cable and the power adapter. If the first set was third-party, switch to certified parts. Check the port with a light; lint blocks the plug from seating. Power off, then nudge debris out with a plastic pick or wooden toothpick. Never use metal. If the port or plug runs hot, book service.
4) Recover The Software On A Computer
If the phone still won’t start, connect it to a Mac (Finder) or a Windows PC with iTunes or the Apple Devices app. Enter recovery mode, then choose Update to reinstall iOS without erasing. If Update fails, repeat and choose Restore to load a fresh system. Keep the cable connected until done.
Apple’s article on using recovery mode covers when to use it and the steps for Mac and Windows.
5) Watch For Temperature And Liquid Alerts
If a liquid alert appears when you connect a cable, unplug it and let the port dry completely before charging again. Charging while moisture is present can damage the connector. If you work in harsh heat or cold, let the device normalize first; iOS may pause charging to protect the battery.
Apple documents both liquid alerts and temperature behavior; the guidance matches what you see here.
Why Phones Go Dark: Common Root Causes
Power problems fall into a few buckets. Knowing which one fits saves time and data.
Battery Charge Or Health
Deep discharge can light the screen but not complete boot. Leave it on a strong charger and try again. With aging hardware, a worn cell can trigger shutdowns under load. In Settings > Battery > Battery Health, check Maximum Capacity and Peak Performance Capability. If health is poor, schedule a swap.
Charger And Cable
A flaky brick or fatigued cable can mimic a dead phone. Try a different outlet and adapter; bypass power strips.
Software Stall Or Corruption
System updates, low storage, or a crash can leave the device stuck on a black screen or logo. A force restart often clears it. If the boot still loops or freezes, a recovery update usually fixes it without wiping.
Temperature Extremes
Hot dashboards or winter wind can trigger safeguards that dim, slow, or shut the device down. Keep within the recommended range and out of direct sun while charging. If you see a temperature warning, pause until it cools.
Liquid In The Connector
Water in the USB-C or Lightning port interrupts the charge handshake. The device will block charging and may prompt with a liquid message. Let it air dry; don’t use heat or compressed air.
Step-By-Step: Recovery Mode Without The Jargon
You’ll need a computer, a compatible cable, and a stable internet connection.
- Open Finder on Mac or iTunes/Apple Devices on Windows.
- Connect the phone to the computer.
- Use the force-restart button sequence, but keep holding the Side button until the recovery screen appears.
- Choose Update to reinstall iOS while keeping data. If this fails twice, choose Restore to erase and reload.
- After the process, set up and sign in. If you erased, restore from an iCloud or local backup.
| Recovery Option | What It Does | When To Use |
|---|---|---|
| Update | Reinstalls iOS without erasing | Logo loop or black screen after crash |
| Restore | Erases and installs fresh iOS | Corruption that Update can’t repair |
| Service | Hardware diagnosis and repair | Port damage, swollen cell, liquid ingress |
Keep It From Happening Again
A few habits reduce repeat incidents and keep data safe.
Stick To Safe Charging
Prefer quality adapters and cables. Keep the connector clean and dry. If a cable or port feels loose or hot, stop and swap parts or book a check. Avoid charging in a closed car on hot days.
Stay Current On Software
Install iOS updates when prompted, when possible. Many include power management fixes. Leave a few gigabytes free regularly so the device can apply updates and create caches without choking.
Watch Battery Health
Peek at Battery Health once a month. If capacity drops and shutdowns appear, a fresh cell brings stability back. Apple’s battery pages outline how health, performance, and shutdown safeguards tie together.
Back Up Regularly
Use iCloud Backup or a computer. Automatic daily backups save stress when a restore is needed. After big changes, run a manual backup.
Mind storage too. Car interiors, sunny windowsills, and heaters can push temperatures past safe limits. Store phones between −20º and 45º C when not in use, and avoid glove boxes in hot seasons. Keep a short USB-C cable in your bag to test accessories when the device feels unresponsive right away.
When To Stop Troubleshooting And Call In Service
Book a repair if any of these apply:
- No response after a full charge and a correct force restart.
- Recovery mode fails repeatedly or shows hardware errors.
- The phone heats up on the charger, the port is damaged, or the battery swells.
- You dropped it in liquid and the port keeps warning after it’s dry.
Model-Specific Button Combos
Here are the sequences for a force restart or to enter recovery:
Face ID Models
Press and release Volume Up, press and release Volume Down, then hold the Side button until the logo appears. Keep holding to reach the recovery screen.
Home Button Models
Hold the Home button and the Side (or Top) button together until the logo appears. Keep holding to reach the recovery screen.
For a single reference, see Apple’s “won’t turn on or screen is black” page in the official Apple Help app on Mac or the web; it lists these steps and timing notes.