Transfer Data to Samsung Galaxy S25: Full Guide

Moving to a new Samsung Galaxy S25 doesn’t mean losing your photos, contacts, or app data. This guide walks you through the fastest and most reliable ways to transfer everything from your old Android phone, whether you’re upgrading from a Samsung or another brand. You’ll learn the built-in Smart Switch method, plus backup and manual alternatives, so you can choose what fits your situation.

What You’ll Need

Your old Android phone (charged, ideally above 50%)
Your new Samsung Galaxy S25 (charged, ideally above 50%)
A USB cable that fits both phones (USB-C to USB-C works for most modern Androids; if your old phone uses micro-USB, you’ll need an adapter)
Stable Wi-Fi connection for both phones (for wireless transfer)
Optional: A computer with enough free storage for a backup
Optional: Google account credentials for cloud-based transfers

Step-by-Step

Back up your old phone (recommended). Before starting, go to Settings > System > Backup on your old Android. Make sure “Back up to Google Drive” is on. This creates a cloud backup of your app data, call history, contacts, and settings. Also, check that your photos are backed up via Google Photos if you use it.
Turn on your Galaxy S25. If you haven’t set it up yet, follow the on-screen prompts until you reach the “Copy apps & data” screen. If you’ve already set it up, you can still use Smart Switch later from the Settings app.
Choose your transfer method. At the “Copy apps & data” screen, select “From Android” or “Wireless” depending on what you see. For a wired connection, tap “From Android” and then “Cable.” For wireless, tap “Wireless” (or “Wi-Fi”).
Connect the phones (wired method). Plug one end of the USB cable into your old phone and the other into your S25. If your old phone asks for permission to allow USB debugging or file transfer, tap “Allow” or “OK.” The Smart Switch app on the S25 should automatically detect the connection.
Connect the phones (wireless method). On your old phone, download and open the Smart Switch app from the Google Play Store if it’s not already installed. Follow the prompts to connect to the S25 via a temporary Wi-Fi hotspot. Both phones will show a confirmation code—verify they match and accept.
Select what to transfer. On the S25, you’ll see a list of content types: Contacts, Messages, Photos, Videos, Music, Documents, Apps, and Settings. You can uncheck anything you don’t want. For a full migration, leave everything checked.
Start the transfer. Tap “Transfer” or “Copy.” The time depends on the amount of data and the connection speed. Keep both phones close and don’t put them to sleep. You can monitor progress on the S25.
Complete setup. When the transfer finishes, tap “Done” on the S25. Unplug the cable if you used one. Continue with the rest of the phone setup (fingerprint, face unlock, etc.).
Restore from cloud backup (alternative). If you skipped the direct transfer, you can instead sign in to your Google account on the S25 during setup. It will offer to restore from the backup you made in step 1. This is slower but works even if you don’t have the old phone with you.
Check your data. After setup, open your Contacts, Gallery, and Messages apps to confirm everything arrived. If something’s missing, you can re-run Smart Switch from Settings > Accounts and backup > Smart Switch on the S25.

Common Mistakes

Using the wrong cable. A charge-only cable won’t transfer data. Make sure you use a cable that supports data transfer (most USB-C cables do, but some cheap ones are charge-only).
Letting the phone sleep. If either screen locks during a wireless transfer, the connection can drop. Disable sleep temporarily or keep tapping the screen.
Not checking storage space. If your S25 has less free storage than the amount of data you’re transferring, the transfer will fail. Check Settings > Storage on the S25 before starting.
Interrupting the process. Don’t unplug the cable or move out of Wi-Fi range until the transfer is 100% complete.
Ignoring app compatibility. Some apps (especially banking or two-factor authentication apps) may not transfer properly. You’ll need to reinstall and re-login to those manually.

Tips

Use a wired connection for large data. If you have over 10 GB of photos and videos, the cable method is significantly faster and more stable than wireless.
Charge both phones. A transfer can take 30 minutes or more. Plug both phones into power if possible.
Update Smart Switch. On both phones, make sure the Smart Switch app is updated to the latest version from the Play Store or Galaxy Store.
Transfer WhatsApp separately. WhatsApp has its own backup system. In WhatsApp, go to Settings > Chats > Chat backup and back up to Google Drive before switching. On the S25, install WhatsApp and verify your number—it will offer to restore from the cloud.
Use Samsung Cloud for Samsung-to-Samsung. If your old phone is also a Samsung, you can back up to Samsung Cloud and restore on the S25. This is a good backup in addition to Smart Switch.

Troubleshooting

Smart Switch doesn’t detect my phone. Try a different USB port or cable. If using wireless, restart both phones and try again. Also, ensure the old phone’s screen is unlocked and the Smart Switch app is open.
Transfer keeps failing midway. Check that both phones have enough battery and storage. Delete unnecessary files on the S25 if needed. Try reducing the data you’re transferring (e.g., skip large videos) and then do a second transfer for the rest.
Photos are missing after transfer. If you used Google Photos, they might not have been copied as files. Open Google Photos on the S25 and sign in to see your library. If you transferred via cable, check the DCIM folder in My Files.
Apps didn’t come over. Smart Switch transfers APK files, but some apps (especially paid or region-locked ones) may not install. Go to the Play Store on the S25 and reinstall them manually. Your app data might be restored from Google backup.
Contacts didn’t sync. If contacts are missing, check that they were stored on the phone (not just SIM or Google). On the old phone, go to Contacts > Settings > Import/Export and export to a .vcf file, then transfer that file to the S25 and open it.
Transfer is too slow. For wireless, move closer to your router and ensure no other large downloads are happening. For wired, make sure you’re using a USB 3.0 or higher port on your computer if you’re going through one.

Frequently Asked Questions

Can I transfer data from an iPhone to a Galaxy S25?

Yes. Smart Switch supports iOS devices. On the S25, choose “From iPhone” and follow the prompts. You’ll need to connect via cable or Wi-Fi and sign in to your iCloud account if you want to transfer photos and videos.

Will Smart Switch transfer my app passwords?

No. For security reasons, passwords for apps (like banking or social media) are not transferred. You’ll need to log in again on each app. Some apps may restore session tokens from Google backup, but it’s not guaranteed.

How long does the transfer take?

It depends on the data size and method. A few hundred photos and contacts can take 5-10 minutes wirelessly. 50 GB of videos might take over an hour over Wi-Fi, but only 15-20 minutes with a USB-C cable.

Can I transfer data after I’ve already set up my S25?

Yes. Go to Settings > Accounts and backup &em; Smart Switch on the S25 and start a new transfer. It works the same as during initial setup.

What if my old phone doesn’t have Smart Switch?

You can download Smart Switch from the Google Play Store on any Android phone. It’s not required for the cable method—the S25 will prompt you to install it if needed.

Will my text messages transfer?

Yes, Smart Switch transfers SMS and MMS messages by default. However, if you have a lot of messages, the transfer might take longer. You can also use a dedicated SMS backup app if you prefer.

General steps for current mainstream versions; menus can differ by device and version. See the disclaimer or report an error.

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