How To Fix A Galaxy S10 That Won’t Turn On (2026)
Your Galaxy S10 shows a black screen and does not respond to the power button.
That is usually a drained battery, a frozen system or a bad cable, and most of those can be fixed at home.
This guide walks through the checks in the order Samsung and repair sites recommend them, and it takes about 15 minutes plus charging time.
Quick answer: what to try first
| What you see | Most likely cause | Try this first |
|---|---|---|
| Black screen, no lights, no vibration | Fully drained battery | Charge with a Samsung-certified charger, even if no charging icon appears |
| Phone frozen or stuck on a black screen | Software freeze | Force restart: Power + Volume Down for 7+ seconds |
| Charging icon never appears | Cable, adapter, outlet or dirty port | Swap cable and adapter, then inspect the port |
| Phone vibrates or sounds but screen stays black | Screen or display fault | Force restart, then book a screen repair |
| Samsung logo appears, then it fails to load Android | Bad app or corrupted cache | Safe mode, then wipe cache partition |
| Dropped or wet phone | Hardware damage | Stop troubleshooting and contact Samsung |
No power or won’t boot: which problem do you have?
A phone with no power shows nothing at all, while a phone that will not boot at least reaches the Samsung logo.
The first case points to the battery, charger or hardware, and the second points to software.
Step 1: charge the phone properly
Samsung says a completely drained battery will not power on even while plugged in, so give it time before judging.
- Connect a Samsung-certified charger and cable to a wall outlet.
- Leave the phone alone for several minutes, because the charging icon may not show on a fully drained battery.
- If the screen stays dark, keep charging for about an hour, or overnight if the battery was completely flat.
- Try to turn the phone on again.
Samsung’s own page only asks for a few minutes of charging, while Android Authority suggests about an hour, so the longer wait is the safer test.
Charging through a PC USB port can be much slower, so use a wall adapter for this test.
Step 2: force restart the Galaxy S10
A force restart clears a frozen system and does not erase your data, according to Samsung.
- Press and hold the Power button and the Volume Down button together.
- Keep holding for at least 7 seconds.
- Release both when the Samsung logo appears and the phone vibrates.
If the volume bar or the power menu shows up instead, the buttons were not pressed at the same moment, so try again.
Take the case off if it blocks either button.
| Source | How long to hold Power + Volume Down |
|---|---|
| Samsung support (US and Singapore) | At least 7 seconds |
| Samsung support (UAE page) | Up to 60 seconds |
| iFixit and Android Authority | About 30 seconds |
If seven seconds does nothing, keep holding for 30 seconds before you give up.
Step 3: try a different charger and cable
A worn cable or adapter can charge slowly or not at all, and Samsung tells users to try a spare set.
- Cable: use a different data cable that is not frayed or bent at the connector.
- Adapter: use a Samsung-certified one, because incompatible chargers can damage the phone.
- Outlet: move to a different wall outlet to rule out a dead socket.
If you have no spare, a Samsung store can let you test with theirs.
If charging is slow rather than absent, see our guide to a Galaxy S10 that charges slowly.
Step 4: inspect the charging port and phone for damage
Samsung recommends checking the phone, charger and cable for corrosion, foreign objects and bent pins.
- Look into the port with a flashlight or magnifier for lint or debris.
- Blow out loose lint with compressed air, and do not push metal objects into the port.
- Check for signs of liquid in the port.
- Check that the phone is not overheated, swollen or misshapen.
- Make sure the cable sits firmly in the port without wobbling.
A swollen or hot phone should not be charged again, so contact Samsung instead.
The same port checks apply to the larger model, as covered in our Galaxy S10 Plus not charging guide.
Is it really off, or is only the screen dead?
Many people think a phone is dead when only the display has failed, often after a drop.
- Call the phone from another number and listen for ringing or vibration.
- Watch for the notification light or charging sounds while plugged in.
- Press the power button and listen for any response.
If the phone responds but the screen stays black, the display needs a repair, and the iFixit S10 page lists a screen replacement guide as the fix once the battery is ruled out.
Step 5: boot into Safe mode if it reaches the logo
Safe mode pauses downloaded apps, so it shows whether a third-party app is stopping Android from loading.
- Switch the phone off, then switch it on.
- When the Samsung logo appears, press and hold Volume Down.
- Keep holding until the phone finishes starting, and look for “Safe mode” at the bottom left.
If the phone works normally in Safe mode, remove recently installed apps one at a time until the problem stops.
To leave Safe mode, hold the Power button and tap Restart.
Samsung’s Safe mode page has the same steps, and our Safe mode troubleshooting guide covers a phone that stays stuck in it.
Step 6: wipe the cache partition from recovery
If Safe mode does not help, clearing the system cache can fix a phone that stalls while loading Android.
- Switch the phone off completely.
- Hold Volume Up, Bixby and Power together until the phone vibrates and the Samsung logo appears, then release them.
- In the recovery menu, use the volume keys to highlight Wipe cache partition and press Power.
- Select Yes with the volume keys and press Power.
- Choose Reboot system now (or Reboot device, depending on the menu) when it finishes.
This button combination is the one Samsung lists for the S8, S9 and S10 family, according to Samsung’s cache page.
If the phone will not enter recovery at all, you have probably reached the limit of what software fixes can do.
When to contact Samsung or a repair shop
| Situation | Next step |
|---|---|
| Nothing works after charging for an hour or more and a force restart | Contact Samsung Support through chat or the Samsung Members app |
| Phone is dropped, wet, swollen or overheats | Stop charging it and request a repair |
| Phone is old and drains fast or dies suddenly | Ask about a battery replacement, which iFixit lists as the fix for a worn battery |
| Phone responds but the display stays black | Request a screen repair |
The Galaxy S10 launched in 2019, so many units now have worn batteries, which is the cause iFixit names after charging and firmware.
Samsung’s will not turn on page links to its support chat and repair request options.
Back up your data as soon as the phone turns on again, because a phone that failed once may fail again.
If the charging problem comes back later, read our general guide to a Samsung Galaxy that won’t charge.
My S10 died in the middle of typing. After several hours the Android logo kept popping up for 30 seconds or so and that is the only time, I was able to do anything with the phone. I did the above steps before reading this article. I was never able to get into safe mode. However, I did get into recovery mode. It asked me if I wanted to connect to a PC with a cable or (there was another option) probably to save my information. I then got to another screen for recovery and was given two options, restore or (another I can remember) I hit restore and it started the process but gave me 7 seconds to cancel it. I second-guessed myself and hit the volume down button to cancel.
My question is. Is this a possible way to get hacked? I have been leaving the phone plugged into my car, even after it was 100% charged, and using my PC cable to charge it (sometimes falling asleep)