My device is charging slowly , not switching on or keeps restarting

My device is charging slowly, not switching on or keeps restarting

If your device is charging slowly, not switching on or restarting there are a number of possible solutions that you can try at home to resolve the issue. If you've tried all options and the problem remains, use the Samsung Members app to allow us to take a closer look at what is happening or get in contact with Samsung Support.

My device is charging slowly or not at all

There are a number of reasons why your device might be charging slowly and most can be fixed without any extra support. First, check that you are using the correct cable and plug and that you're connected to a powersocket rather than a laptop or PC.

Check your chargerClick to Expand

Although most phone chargers and charging cables look similar, there can be a huge difference between their quality and charging speed. It is always recommended to use the charger that came in the box or an official Samsung replacement as these have been specially made for your device.


If you're using an official charger, check to ensure that there isn't any damage to the cable or plug. If you notice any damage, stop using the charger immediately. While checking your charger, look at the charging port on your device to ensure that it is free from any debris.

Turn on fast chargingClick to Expand

Adaptive Fast Charging is a built-in feature which allows the battery to charge much faster. To use it, you will need to connect your compatible device to a charger that supports fast charging. Fast charging cables and plugs are provided in the box for supported devices.


You can turn Adaptive Fast Charging on and off in your settings.

Please note: Adaptive Fast Charging is only available on certain devices. The feature launched on the S8 and has been included in most devices

since. For more information about your device and its specifications visit Samsung Support

1 Open the Settings app
Open the Settings app
2 Tap Device Care or Device Maintenance
Tap device care or device maintenance
3 Tap Battery
Tap Battery
4 Tap the options icon. It will appear as three dots in the top right corner
Tap options
5 Tap Settings or Advanced Settings
Tap Settings
6 Tap Fast cable charging to turn the feature on or off
Tap Fast cable charging
Check for water and moistureClick to Expand

Your device will not charge if it detects water or moisture in the USB port. This is a preventative measure to protect the device from damage and corrosion. If your device has detected water in the charging port, it will sometimes display a waterdrop icon on the screen above the charging port. If you see the waterdrop icon, make sure that your device is turned off while it dries.


Most moisture will evaporate by itself within a few hours, but you can also try blowing on the port or exposing it to cool, dry air. If the waterdrop icon has still not disappeared but you are sure the charging port is dry, try turning your device off and on again.


If the icon remains after this, please contact Samsung Support.

Clear your background appsClick to Expand

Apps are what consume most of the battery life on your device. If you have a lot of apps open at once they will often be functioning in the background and consuming your battery. Make sure that any unnecessary apps are closed when you are charging your phone. 

1 Tap the recent apps key. It will appear as three vertical lines on the left side of the home button
Tap the recent apps icon
2 All of the apps you've used recently but not closed will be displayed. Swipe left or right to navigate between them
Swipe left and right to find the app you wish to close
3 Swipe up on an app to close it
Swipe up on an app to close it
4 You can also tap Close all to clear all background apps
You can also tap Close all
Update your apps and softwareClick to Expand

App and software updates are often released to fix any bugs and issues that may be occurring. To ensure that your device is working at the highest possible standard, you should try and ensure that all updates are done as soon as possible. 


Find out more about updating the software on your phone.


Find out more about updating your apps.

Check your battery life through your settingsClick to Expand

In your settings you can find out extra information about your battery life and which apps are consuming the most data. You can also enable features such as Power Saving Mode to try and extend your battery life by turning off some of your device's functions.

1 Open your Settings
Open the settings app
2 Tap Device Care or Device Maintenance
Tap device care
3 Tap Battery
Tap Battery

Information about your battery such as how long it should last and what apps are consuming the most charge will be displayed. From this screen you can change battery mode to get the longest life or best performance from your device.

1 Tap Power mode
Tap Power mode
2 Choose the power mode that you wish to use
Choose a power mode
Check your battery life through the Samsung Members appClick to Expand

The Samsung Members app connects you to a comprehensive section of FAQ's and expert advisers. Through the Members app you can run diagnostic checks on your devices to make sure that everything is working as it should be.

1 Open the Samsung Members app
Open the samsung members app
2 Select the Get help tab
Tap Get help
3 Select Interactive checks. Alternatively, perform a full hardware check by tapping Automatic checks
Tap interactive checks or automatic checks
4 Tap Battery
Tap Battery

Once the hardware test has completed you will be shown tips and solutions if any faults are found.

Delete any third party appsClick to Expand

On your device you can install apps from the Play Store, Galaxy Store and from downloads on the internet. While the Play Store and Galaxy Store are regulated and checked for malicious activity, apps you've downloaded from the internet are not and can be a security risk to your device. Make sure that you trust the app and the source you are downloading it from before installing it on your device.


If you've noticed that your device is charging slowly and you've recently installed a third-party app, it could be the cause of your issues. Try removing the app from your device to see if your phone returns to normal.

1 Find the app you wish to delete
Find the app you wish to delete
2 Tap and hold the app
Tap and hold the app you want to delete
3 Tap Uninstall. If this option doesn't appear, drag the app to the top of the screen where it says uninstall
Tap uninstall or drag the app to the uninstall option at the top of the screen
Video Alternative Text

My device isn't switching on

If your device isn't turning on but has done in the past, it could be an issue with the software and may require a restart or longer charge. 

Leave your device to chargeClick to Expand

If the battery has been fully discharged it may take a little longer than usual to charge initially. Leave your device on charge for 30 - 45 minutes depending on how long the battery has been empty.

Perform a soft resetClick to Expand

A soft reset is a way of restarting your device by closing all your applications before rebooting. This will not delete any of your data, but any unsaved work will be lost.


Before performing a soft reset, please make sure that your device has a sufficient amount of battery. If you force your device to reboot when it only has a small amount of charge remaining it may have issues turning back on.


Hold down the volume down and power buttons simultaneously for seven seconds.


Your device should restart and display the Samsung logo.

Clear the cache partition on your deviceClick to Expand

Clearing your cache partition resets a part of your device's storage. Unlike a factory reset, which should be used as a last resort, clearing the cache partition does not delete your data from the device.

1 Turn off your device if it isn't turned off already
2 Press and hold the Volume up, Bixby and power buttons

Please note: if your device has a physical home button, press and hold the home button rather than the Bixby button

3 When the Samsung or Android logo appears, release all buttons

Your device may display a system update message before the recovery menu appears.

4 Navigate the recovery menu using the volume down key to select wipe cache partition
5 Press the power button

The cache will now be wiped. Once complete, your device will restart automatically or the Reboot system now option will be highlighted. If the reboot system now option is on the screen, press the power button to restart your device.

My device switches off or restarts unexpectedly

Your device can switch itself off unexpectedly to protect itself from damage, for example in extreme temperatures when it is getting too hot or cold. If your device is switching itself off frequently you should see if there is any correlation between when it happens.

Does this only happen when you're using a specific app?Click to Expand

If you can, try and ensure that you only download apps from secure and reliable sources such as Galaxy apps and the Play Store. Apps downloaded from third party sources can be a security risk to your device and cause unwanted issues. 


If you are having trouble with a specific app, you can start your device in Safe Mode to see if the app is causing the problem. In Safe Mode only the basic system software is active. If your device works in Safe Mode, there's a good chance that it's something that's been installed which is causing the problems. 

1 Turn off your device
2 Press and hold the power button to turn on your device
3 When the Samsung logo appears on screen press and hold the volume down button
4 Once Safe Mode is displayed on the lock screen you can release the volume down button

Use your phone as normal to see if the issue remains. If not, delete or uninstall the app that you believe to be causing the issues.


To use your device in its normal mode, turn it off and on again.

How much space is left on your device?Click to Expand

Your device needs a small amount of storage space remaining in order to perform its basic functions efficiently. This amount will vary depending on your device and its maximum storage. If you don't have enough space remaining, your device may run slowly or restart itself.


Find out more about checking your storage space.


Find out more about managing your apps.

Does your device feel hot when it switches off?Click to Expand

If your device detects that it is getting too hot, it will switch itself off automatically. This is an intended feature that prevents damage to your device.


Your phone can get too hot if many power-intensive apps are running at the same time or you have insufficient storage. Make sure that your device software is kept up to date and that any unnecessary apps are closed.

If you're experiencing unusual behaviour on Samsung mobiles, tablets or wearables, you can send us an error report or ask us a question in the Samsung Members app. 


This allows us to take a closer look at what is happening. The data is anonymised and only held for the duration of the investigation. Find out more about sending an error report through the Samsung Members app.

Thank you for your feedback!

Not finding what you're looking for? We're here to help.



Tweet us | 9am-9pm, 7 days a week

Facebook Messenger

We are here to help | 9am-9pm, 7 days a week

Smartphone support | 24 hours, 7 days a week
All product support | 8am - 10pm, 7 days a week
SmartThings | 9am - 5:30pm, Mon - Fri


We'll respond within 24 hours of your request.

Email Samsung Shop

For new and existing orders

Order Status & Tracking

Send us an email to get an update on your Samsung Shop order.

Track my repair

Check the status of your repair with Samsung

SmartThings Support

Help with Hubs, Kits, Sensor and Outlets


0818 717100General Support

Smartphone support | 24 hours, 7 days a week
All product support | 8am - 10pm, 7 days a week

0818 302 016Samsung Shop

For new and existing orders | 9am - 5pm, 5 days a week

0124 75161B2B Support

For business support
8am - 6pm, Mon - Fri

Calls to 0818 numbers are a National Call number.
These are subject to call charges which vary by network and are subject to change.
Calls maybe recorded for training and quality purposes.
For information on how we collect and use your details, please refer to our Privacy policy

* For any printer related enquiries please visit the HP website.

Face-to-face support

Samsung Support Centres

Find out more about how you can get face to face help.

Contact Us