You pick up your iPhone and the screen stays black. No Apple logo, no vibration, nothing. You plug it in, wait, try again – still nothing. Somewhere between “the battery just died” and “the whole phone is gone” sits the real answer, and you have no way of knowing which.
That gap is expensive. People replace a $1,500 phone over a $90 fault, or pay for a screen when the screen was never the problem. This guide walks you through the same first checks our technicians run on the bench, so you can narrow it down yourself before anyone quotes you anything.
Is your iPhone actually off, or is the screen dead?
These are different faults with very different prices, and they look identical from the outside. An iPhone with a dead display is often still running – it rings, it vibrates, it connects to a computer. An iPhone that is genuinely off does none of those things. Establishing which one you have is the single most useful thing you can do before booking a repair.
The four-step test you can run at home
Work through these in order. Write down what happens at each step – that answer is what a technician needs.
Step 1 – Force restart. This is not the same as holding the power button. The correct sequence depends on your model (see the table below). A force restart clears a software freeze, which is a surprisingly common cause of a black screen and costs nothing to rule out.
Step 2 – Charge it and wait. Plug it into a wall charger, not a computer or a car, and leave it for 30 minutes untouched. A deeply discharged battery can take 15-20 minutes before it shows any charging symbol at all. If a red battery icon or the Apple logo appears, the phone is alive.
Step 3 – Listen and feel. With the phone plugged in, call it from another phone. Does it ring or vibrate? Does the silent switch still click? Any sign of life means the phone is powering on and the display is the suspect.
Step 4 – Connect it to a computer. Plug it into a Mac or PC and open Finder (macOS Catalina and later) or the Apple Devices app on Windows. If the computer recognises the iPhone, the logic board and battery are working. The problem is the screen.
How to force restart your iPhone, by model
| Model | Force restart sequence |
|---|---|
| iPhone 8, iPhone SE (2nd and 3rd generation), and every model from iPhone X to iPhone 17 | Press and release Volume Up. Press and release Volume Down. Hold the Side button until the Apple logo appears – up to 20 seconds. |
| iPhone 7, iPhone 7 Plus | Hold Volume Down and the Side button together until the Apple logo appears. |
| iPhone 6s, iPhone 6s Plus, iPhone SE (1st generation) | Hold the Home button and the Side button together until the Apple logo appears. |
Keep holding. Most people let go at ten seconds and conclude it did not work.
What your result actually means
| What you saw | Most likely cause | What it usually needs |
|---|---|---|
| Apple logo appears, then the phone boots | Software freeze | Nothing – it is fixed |
| Apple logo appears, then it restarts endlessly | Corrupted iOS, or failing storage | Software restore, sometimes board work |
| Red battery icon after 15-20 minutes | Deeply discharged battery | Charge fully, then check Battery Health |
| No charging symbol at all, no heat | Battery, charging port, or charging circuit | Diagnosis needed |
| Rings or vibrates, screen stays black | Display, display cable, or backlight circuit | Screen or board repair |
| Computer recognises it, screen stays black | Display assembly – the phone itself is fine | Screen replacement |
| Nothing at all, phone stays cold | Power fault on the logic board | Board-level diagnosis |
| Nothing at all, phone gets hot | Short circuit on the board | Stop charging it and get it checked |
That last row matters. A phone that becomes hot while refusing to turn on has a short somewhere. Continuing to charge it can turn a repairable fault into an unrepairable one.
The five faults behind most dead iPhones
A worn or failed battery. The most common cause and the cheapest fix. Lithium-ion cells degrade with every charge cycle, and once capacity drops far enough the phone can no longer draw the current it needs to boot.
A damaged charging port. The Lightning port on iPhone 14 and earlier, and the USB-C port on iPhone 15 and later, sit at the bottom edge of the phone and collect pocket lint. Often it is simply blocked rather than broken.
A failed display assembly or display cable. The phone runs normally; you just cannot see it. On iPhones the display connector sits under a metal shield, and cables can fail from a drop that left no visible mark.
Water damage. Liquid does not destroy a phone instantly. It corrodes the board over days and weeks, which is why phones often die a fortnight after being dropped in water, long after the owner assumed it survived.
A power management fault on the logic board. The power management IC and the charging control circuit sit on the main board. When these fail the phone is completely dead. This is board-level micro-soldering work, and it is where most repair shops stop and tell you to buy a new phone.
When an iPhone isn’t worth repairing
We would rather tell you this before you pay than after.
If the board has significant water corrosion, board repairs carry no warranty anywhere, including here. The repair may hold for years or fail in a month, and nobody can honestly promise which.
If the phone is an iPhone 8, iPhone X or older and needs board-level work, the repair cost often approaches what the handset is worth. A battery or screen on those models is usually still worth doing; a power fault usually is not.
If it needs two or more major repairs at once – say a screen and a board fault – the total frequently exceeds the value of the phone.
If the phone was dropped in salt water and left for weeks, recovery odds fall sharply. Salt is far more aggressive than fresh water.
What is almost always worth doing, even on a phone you plan to replace, is data recovery. The storage chip usually survives what killed the phone.
What the repairs actually involve
A battery replacement takes under an hour on most models. We check the charging circuit at the same time, because a battery that failed early often points to a charging fault that will kill the new one too.
A charging port repair is either a clean or a replacement. A clean takes minutes. A replacement means desoldering the old port from the board and fitting a new one – micro-soldering work.
A screen replacement on most iPhones is same-day. We will tell you which grade of screen we are quoting before you agree to it, because original and aftermarket screens differ in brightness, colour and how long they last.
Board-level repair is where a dead iPhone is either saved or written off. We do this in-house at our Burwood workshop rather than sending it away, which is why we can take on faults other shops decline.
Data recovery from a phone that will not power on is a separate job from repairing it. If the photos matter more than the phone, say so first – it changes how we approach the board.
Where to get it looked at
Bring the phone to any of our stores and the diagnosis is free. You will get a fixed quote before any work starts, and every repair carries a six-month warranty.
- Burwood – 10 Burwood Road, Burwood NSW 2134
- Newtown – Shop 1A/2 Enmore Road, Newtown NSW 2042
- Adelaide CBD – Station Arcade, Shop 3, 52-54 Hindley Street, Adelaide SA 5000
- Parramatta – free pickup and delivery in the Parramatta area
Cheap Mobile Repair has been repairing phones since 2015 and holds more than 4,400 Google reviews across our stores, averaging 4.8 stars.
Frequently asked questions
Why won’t my iPhone turn on even when it’s plugged in?
A deeply discharged battery can take 15-20 minutes before showing any charging symbol. If there is still nothing after 30 minutes on a wall charger, the likely causes are a failed battery, a blocked or damaged charging port, or a power fault on the logic board.
How do I know if it’s the screen or the whole phone?
Call the phone from another number. If it rings or vibrates, or if a computer recognises it when plugged in, the phone is running and the display is the fault. A completely dead phone does none of these.
Can a completely dead iPhone still have my photos on it?
Yes. The storage chip is separate from the parts that usually fail, and it commonly survives water damage, board faults and physical damage. Photos, messages and contacts can often be recovered even when the phone cannot be repaired.
Does a force restart erase my data?
No. A force restart is the equivalent of pulling the power on a frozen computer. It does not touch your data, apps or settings.
My iPhone gets hot but won’t turn on. What does that mean?
Heat without booting usually indicates a short circuit on the logic board. Stop charging it. Continuing to supply power to a shorted board can cause further damage and reduce the chance of repair.
How long does an iPhone battery last before it needs replacing?
Most iPhone batteries reach the end of their useful life after roughly two to three years of normal use. Check Settings, then Battery, then Battery Health – below 80% capacity is generally due for replacement.
Is it worth repairing an older iPhone?
A battery or screen replacement is usually worth it on almost any model. Board-level repairs on an iPhone 8, iPhone X or older often cost close to the handset’s value, and we will tell you when that is the case.
Do you repair water-damaged iPhones?
Yes. We clean and treat the board rather than simply drying it. Liquid damage repairs carry no warranty anywhere in the industry, including here, because corrosion continues to spread unpredictably.
Can you fix an iPhone another repair shop said was unfixable?
Often, yes. Most shops replace parts and do not do board-level work. We do micro-soldering in-house, which covers power management faults, charging circuits and backlight failures that a parts-swap shop cannot address.
How much does it cost to find out what’s wrong?
Nothing. Diagnosis is free at all our stores, and you receive a fixed quote before any work begins.
