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What to Do If Samsung Smart Switch Stuck at 99% during Transfer

"Trying the transfer data from iPhone to Galaxy S9 using the cable and smart switch. Transfer gets stuck at 99% and won't move for hours. Tried multiple times with no luck. Any ideas?" -- A question posted on AndroidCentral forum

Samsung Smart Switch is a phone data transfer app developed by Samsung Company. It aims to help users to transfer data from other phones to Samsung phones. This is a useful app but there are problems that occur from time to time. Many users report that Samsung Smart Switch is taking a long time while transferring data. So in this article, we provide some possible solutions to fix the Samsung Smart Switch stuck at 99% problem.

 samsung smart switch stuck

Part 1: Samsung Smart Switch Stuck and Taking a Long Time, Why?
Part 2: Samsung Smart Switch Backup Stuck on Loading Backup Lists, How to Fix?
Part 3: Samsung Smart Switch Stuck at 99%? Try the Best Alternative to Samsung Smart Switch!

Part 1: Samsung Smart Switch Stuck and Taking a Long Time, Why?

Though Samsung Smart Switch is a very convenient app to transfer data from other phones to Samsung devices, it is such a pain if Samsung Smart Switch stuck at 99% or other numbers and makes no progress. So why Samsung Smart Switch stops transferring in the middle of the process? Before we talk about the solutions, let's take a look at the possible reasons for causing this problem.

* Improper installation on either of your phones could lead to Samsung Smart Switch not working or stuck.
* The USB cable or USB adapter is damage.
* The Wi-Fi feature is not enabled on both phones or the Wi-Fi connection is poor.
* Low battery on your devices.
* The lack of storage space on the target phone.
* There may be some compatibility issues with either devices or the data you are trying to transfer.
* There may be malware on either of the phones.
* There are unreadable or corrupted data that make the transferring process stop.

Part 2: Samsung Smart Switch Backup Stuck on Loading Backup Lists, How to Fix?

In order to use the Samsung Smart Switch app to transfer your phone data successfully, there are a few things you should pay attention to:

* Make sure your devices are supported by Smart Switch. (Here is the compatibility page)
* The source phone should be running Android 4.3 or higher or iOS 5 or higher.
* Download the Samsung Smart Switch on both of your source and target phones.
* Make sure the target phone is a Samsung Galaxy phone.
* If your source phone is an iPhone, make sure that you have trusted the Samsung phone on your iPhone.
* Close the other apps on both your devices so that the content transfer won't be interrupted.
* Don't manually stop the process or exit the app in the middle of transferring.

After checking you have used the Samsung Smart Switch correctly, try the solutions below to fix Samsung Smart Switch stuck at 99% problem:

Solution 1: Make sure the USB cable and port are workable

Check whether there is any damage of your USB cable, USB port, or USB adapter. To do so, you can try the USB cable you are using on other devices or use another workable USB cable to connect your phones. Besides, check if there is dirt in the USB port of your phone, use a dry cloth to clean it.

check usb cable if samsung smart switch stuck

Solution 2: Restart the Wi-Fi connection

If you use Wi-Fi to transfer phone data, you can restart the Wi-Fi feature and try again. To do this, you can navigate to Setting > Wi-Fi and restart it. Or you can simply drag down the notification panel to re-enable the Wi-Fi.

 restart wifi if samsung smart switch stuck

Solution 3: Charge your phones

To ensure a Samsung Smart Switch works smoothly, you should make sure your phones have enough battery to carry out the data transfer. If you are using Wi-Fi transfer mode, you can charge the devices during the transfer so that the Smart Switch backup stuck problem won't happen due to low battery.

charge devices if samsung smart switch stuck

Solution 4: Free up space on target phone

You can go to Settings > Storage to see if your target phone has enough storage space available for the content you are trying to transfer. If there is not enough space on your device, you can free up the internal storage space by deleting the unwanted data or move some items to a microSD card. Note that to transfer data successfully, both devices should have at least 500 MB free space in their internal storage.

 free up space if samsung smart switch stuck

Solution 5: Don't transfer all the data at once

Try not to transfer the overall data at once. Data like apps have large size often take a long time to transfer. When transferring data, you can transfer one type of data at a time. And if it is because of the corrupted data that lead to Samsung Smart Switch stuck, you can find out which data is the cause by transferring them bit by bit.

Solution 6: Clear the app's cache on phones

If the Samsung Smart Switch is taking a long time to transfer, you can try to clear the app's cache and residual files on both your devices. To do this, go to Settings > Apps > find and tap Smart Switch > Storage > Clear cache. You can also tap Clear data > OK to clear the app's data. After this, restart the data transfer. This should fix most Samsung Smart Switch stuck problems.

clear cache if samsung smart switch stuck

Solution 7: Reinstall the Samsung Smart Switch

If the Samsung Smart Switch still stuck on the loading backup lists after clearing the app's cache and data, you can try to remove and reinstall the app on both the devices. To do so, just simply go to Settings > Apps and uninstall Samsung Smart Switch, then download the app from the Google Play store on both devices again.

 reinstall smart switch if samsung smart switch stuck

Solution 8: Restart your devices

If Samsung Smart Switch stuck at 99% issue still persists after trying all the solutions above, then you can restart your phones. Make sure to disconnect your phones before restarting them.

restart phone if samsung smart switch stuck  

Tip: Samsung Smart Switch is not working properly? Find the fixes in the article Useful Tips to Fix Samsung Smart Switch Not Working (Completed Solved).

Part 3: Samsung Smart Switch Stuck at 99%? Try the Best Alternative to Samsung Smart Switch!

If the transfer still gets stuck using Samsung Smart Switch, here we recommend you to try the best alternative to Samsung Smart Switch -- Coolmuster Mobile Transfer. It is a professional phone data transfer tool to help you transfer files between smart phones effortlessly. Unlike Samsung Smart Switch, which only allows you transfer files to Samsung device, Coolmuster Mobile Transfer lets you not only transfer files from Android or iOS devices to Samsung, but also transfer files from Samsung to iPhone or other Android phones. The transition is smooth and stable, everything will move to your target phone accurately without a hitch.

Check the main features of Coolmuster Mobile Transfer:

> One-click to transfer overall data between two smart phones.
> Support Android to Android, Android to iOS, iOS to Android and iOS to iOS transfer.
> Support multiple file types, including contacts, SMS, call logs, calendars, safari bookmarks, photos, music, videos, documents, apps, eBooks, etc.
> Easy to use. Files will be transferred with only three steps: Connect > Select > Transfer.
> 100% read-only. This software is safe and reliable, your personal data is safe with this Coolmuster Mobile Transfer.

It supports Android 4.0 and up as well as iOS 5 and later. For Samsung phones, it is compatible with almost all the Samsung phone models, including Samsung Galaxy S20/S20+/S20 Ultra/S10/S10+/S10e/S9+/S9/S8+/S8, Note10/Note 9/Note 9 Plus/Note 8, and so on.

Download Coolmuster Mobile Transfer to have a try:

download mobile transfer on pc if samsung smart switch stuckdownload mobile transfer on mac if samsung smart switch stuck

Let's see how to transfer data from the old to new Samsung using Coolmuster Mobile Transfer:

Step 1: Install and launch Coolmuster Mobile Transfer on PC, then connect your phones to PC with suitable USB cables. Grant the required permissions according to the prompt to get your phones detected by the software.

connect phones to coolmuster mobile transfer

Step 2: After both phones are detected by the software, you will see the main interface like below. Make sure your Samsung phone is the Destination phone, if not, click Flip to change the positions.

get both phones detected by mobile transfer

Step 3: Select the items you want to transfer, then click Start Copy to move files from one phone to another.

use its alternative to transfer phone data if samsung smart switch stuck

Words in the End

In this article, we list some possible reasons for causing the Samsung Smart Switch stuck issue and explore 8 solutions for fixing this problem. If Samsung Smart Switch still gets stuck during the transfer after attempting, don't despair, there are other options to carry out the data transfer task. Here we suggest you give Coolmuster Mobile Transfer a try. It is the best alternative to Samsung Smart Switch which enables you to transfer files from other phones to your Samsung device or vice versa without any fuss.

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