It’s a known bug that many Samsung Galaxy S8 and S8+ smartphones have wireless charging issues. Samsung hasn’t come out and stated it’s an issue, but users on Reddit and other forums all complain about the same issue. My Galaxy S8 suffered from this issue and I contacted customer service for help. It was a horrible experience, and I’ll walk you through the steps they put me through in order to send it back in. Some of these steps might address your issue, but if they don’t, you’ll likely need to send yours in for repair too. If you bought yours unlocked, be prepared with a backup device because you will be without your S8 for two weeks.
1. Check your wireless charger
I’m sure you already tried this one, but Samsung makes you test it anyways. Make sure you’re using the proper power block and compatible USB-C cable. The best route is to use your fast charger that came with your S8/S8+ with your wireless charger. Or if you have the official Samsung wireless charger like I do, use the power block that came with it. If you have another device that charges wirelessly, use that on your charger to see if it works. If it doesn’t work, the issue is most likely a cable or your charging pad.
CHOETECH sells a great standing wireless charger for $18. I used one in the past and think it’s one of the best priced wireless chargers on the market.
2. Test wireless charging by disabling third-party apps in Safe Mode
- Turn the device off.
- Press and hold the Power key past the model name screen.
- When “SAMSUNG” appears on the screen, release the Power key.
- Immediately after releasing the Power key, press and hold the Volume down key.
- Continue to hold the Volume down key until the device finishes restarting.
- Safe mode will display in the bottom left corner of the screen.
- Release the Volume down key when you see Safe Mode.
- Test your phone on the wireless charger – If it works, a third-party app could be the issue.
- Press and hold the Power key.
- Tap Restart.
3. Clear the system cache on your Galaxy S8 or S8+
- Power down your S8 or S8+.
- Hold down the Bixby Button and the Volume Up button at the same time. Then hold the power button.
- As soon as you feel the phone vibrate on boot, release the power button.
- When the Android loader pops up, release the Bixby Button and the Volume Up button at the same time.
- Let the Android screen initialize and you will be presented with a selection of items to follow. Your touchscreen won’t work, so you will need to use the Volume rocker to navigate the menu.
- Go to Wipe Cache Partition and hit your power button to select.
- Scroll to Reboot System Now and press Power
- Your Galaxy S8 will reboot with a cleared system cache
4. Try a factory reset
I hate this one the most, but if all else fails, try a factory reset.
- Back up data on the internal memory. If you have signed into a Google account on the device, you have activated Anti-theft and will need your Google credentials to finish the Master reset.
- From the Home screen, swipe up on an empty spot to open the Apps tray.
- Tap Settings > Cloud and accounts.
- Tap Backup and restore.
- If desired, tap Back up my data to move the slider to ON or OFF.
- If desired, tap Restore to move the slider to ON or OFF.
- Tap the back button to the Settings menu and tap General Management > Reset > Factory data reset.
- Tap Reset.
If none of these scenarios work, you will need to send in your Galaxy S8/S8+ for evaluation. If you got your phone through a carrier, go through them for support. If you purchased your S8 unlocked from Samsung, you will need to contact its customer support to generate a shipping label for your return.