Replacing an old smartphone with a new flagship Samsung device is always a pleasant thrill, but it's often overshadowed by the need to transfer personal information. For most users, the most valuable asset remains their phone book, and losing it can lead to serious communication problems. Fortunately, modern technology allows Transfer contacts from Android to Android Samsung via Wi-Fi in just a few minutes, without resorting to SIM cards or complex computer programs.
The primary tool for this task is the proprietary Smart Switch app, which comes pre-installed on most Galaxy devices and is available for download on other Android smartphones. This method uses a direct wireless connection. Wi-Fi Direct, providing high-speed data transfer without using up mobile data. Unlike Bluetooth, which is slow and unstable when handling large amounts of data, Wi-Fi allows you to sync thousands of recordings and even multimedia files almost instantly.
In this article, we'll detail all the nuances of the process, examine potential errors, and provide a step-by-step procedure that works for both the latest models and devices released several years ago. You'll learn how to prepare both devices for use, which security settings may interfere with the connection, and how to ensure data integrity during the transfer.
Preparing devices and checking requirements
Before you begin transferring data, you need to make sure both devices are ready to use. On a new Samsung smartphone, the setup process often starts automatically when you first turn it on, but if the device is already in use, you'll need to launch the app manually. On an older phone, regardless of its manufacturer (Xiaomi, Huawei, or Honor), you'll need to install additional software.
Make sure the wireless module is enabled on both devices. For the technology to work correctly, Wi-Fi Direct Connecting to the same home network isn't required, although it can simplify some cloud data syncing processes. The main requirement is an active Wi-Fi module and the absence of power-saving modes that could block background app operation.
⚠️ Important: Before starting the data migration, we strongly recommend checking the available storage on the receiving device. If the old phone is full and the new one has less storage, the process may fail or only partially copy.
It's also worth paying attention to the operating system version. While Smart Switch is compatible with most devices running Android 4.3 and above, some specific features (such as switching home screen layouts or Wi-Fi passwords) may require more recent software versions. Check for updates in the settings menus of both devices.
- 📱 Charge both smartphones to at least 50% or connect them to a power source, as active data transfer via Wi-Fi significantly drains the battery.
- 📶 Make sure that location permissions are enabled on both devices (required for Wi-Fi scanning to work on some Android versions).
- 🔒 Unlock the screens of both devices and hold them close to each other at a distance of no more than 50 centimeters for a stable connection.
Installation and configuration of Smart Switch Mobile
The key to a successful transfer is the right software. On Samsung smartphones, the app Smart Switch It's usually located in the Samsung folder or in the settings menu under "Mobile Data." If you can't find it, simply search for it in your settings or download the app from the Google Play Store.
You also need to install the Smart Switch app on the sending device (your old phone). After installation, launch the app on both devices. The app's interface is intuitive and prompts you to select the device's role during the synchronization process. You'll need to specify which device is the sender and which is the recipient.
When you first launch the app, it will request a number of permissions: access to contacts, storage, phone, and location. Without these permissions, the app will not be able to read the data for transfer. Don't worry, Smart Switch doesn't transfer your data over the internet without your knowledge—the entire process happens locally.
On your new Samsung, select "Receive Data" and on your old phone, select "Send Data." The system will prompt you to select a connection method. For our purposes, select "Wireless Connection." The app will automatically search for available devices within range.
- 📲 Tap "Send data" on your old device and select the device type (Android/iOS).
- 📥 On your new Samsung, tap "Accept Data" and wait for your old phone's name to appear in the list.
- 🔗 Confirm that the codes match or click "Connect" on both screens to establish a secure communication channel.
Step-by-step instructions for transferring contacts
After successfully pairing the devices via Wi-Fi Direct, a list of data categories available for transfer will appear on the old smartphone's screen. By default, all items can be selected, but we're specifically interested in the phone book. However, experienced users often recommend transferring other data as well, so that the new phone becomes a perfect copy of the old one.
Find "Contacts" in the list and make sure the checkbox is checked. If you want to keep your call history and messages, select the appropriate options. Click "Transfer" or "Start Transfer." The transfer process begins, and the progress is displayed as a percentage on both screens.
☑️ Checklist before the start
During the process, do not switch to other apps or turn off your device's screen, although modern versions of Android allow you to minimize the app. Interrupting the process may corrupt the contact database, requiring you to start over or restore a backup.
Transfer time depends on the number of entries. A thousand contacts will copy in a few seconds, but if you're also transferring photos and videos, the process can take 10-20 minutes. Once complete, your new Samsung will display a successful import notification, and the contacts will automatically appear in your default phonebook.
⚠️ Important: If you receive a notification during the transfer that the receiving device is running low on space, stop the process immediately. Clear the storage or selectively transfer only the most important data categories.
After closing the Smart Switch app, your contacts may be indexed by the system for a while. If you don't see them immediately, try restarting your new smartphone. This is a standard procedure for updating the Android database.
Alternative Method: Sync via Google Account
There's another way to transfer contacts from Android to Samsung via Wi-Fi. It doesn't require installing any additional apps but relies on an internet connection. This is classic syncing via Google's cloud service. This method is ideal if you don't have a cable handy or if your Wi-Fi Direct connection is intermittent.
The key is that contacts are stored not in the phone's memory, but in your Google account. When you sign in to the same account on a new Samsung device, all your contacts are automatically downloaded from the cloud. This is the most reliable way to protect against data loss in the event of a phone failure or theft.
To use this method on your old phone, open Settings and find the "Accounts" or "Users and Accounts" section. Select your Google account and make sure the toggle next to "Contacts" is enabled. Tap the sync button (usually the three dots in the corner of the menu) to transfer your data to the cloud.
Then, on your new Samsung, enter the same Google login and password during initial setup. The system will automatically prompt you to restore your data from a backup. If the phone is already set up, simply add the account in the settings menu and enable sync.
| Parameter | Smart Switch (Wi-Fi Direct) | Google Sync |
|---|---|---|
| Speed | Very high (locally) | Depends on the internet speed |
| Traffic | Not consumed | Mobile or Wi-Fi traffic is being used up |
| Additional data | Photos, settings, applications | Only contacts, calendar, mail |
| Complexity | Medium (requires app) | Low (automatic) |
What to do if contacts are duplicated?
If you see duplicate entries after transferring, use the "Manage Contacts" feature in the Samsung Contacts app. Select "Merge Duplicate Contacts," and the system will automatically merge the duplicates into a single entry, preserving all numbers and addresses.
Troubleshooting connection issues and errors
Despite the simplicity of the technology, users may encounter difficulties. It's common for devices to fail to recognize each other, or for the process to freeze at a certain percentage. One of the most common causes is a conflicting app or operating system version. Ensure both devices are running the latest versions of Smart Switch from official sources.
Another common issue is aggressive battery optimization. Many Android manufacturers (especially Xiaomi and Huawei) severely limit background app activity to save power. This can interrupt the Wi-Fi Direct connection at the most inopportune moment. Smart Switch should be added to the exceptions or allowed apps list.
To do this, go to Settings → Applications → Smart Switch → Battery and select "Unlimited" or "Don't save battery." Also, check if Airplane Mode or Power Saving Mode are enabled, as these can disable Wi-Fi when the screen is off.
- 🔄 Restart both devices and try to start the process again, after closing all unnecessary applications.
- 📡 Make sure that the "Use random MAC address" option is not checked in the Wi-Fi settings on your old phone (this may interfere with identification in some routers, although this is less critical for Direct).
- 🛡️ Check your antivirus software: sometimes third-party security software blocks the creation of a local server for file transfers.
⚠️ Note: Menu interfaces and item names may vary depending on your phone model and operating system version (One UI, MIUI, EMUI). If you can't find the item you need, use the Settings search by entering the keyword "Battery" or "Apps."
Completing the migration and verifying data
Once the progress bar reaches 100%, don't rush to close the app. Give the system a few seconds to finish transferring the data. A summary report showing how many contacts, messages, and files were successfully transferred will appear on your new Samsung device.
Now it's time to do some checking. Open the Contacts app on your new device and scroll through the list. Check that numbers, names, profile photos, and additional fields (addresses, birthdays) are still there. Pay special attention to contacts stored on the SIM card—Smart Switch may not see them if they weren't copied to the phone's memory beforehand.
If you also transferred media and apps, check your gallery and home screen. Some apps may require re-authorization for security reasons. This is normal behavior for banking apps and messaging apps.
If some contacts are lost or display incorrectly (for example, gibberish instead of letters), the problem may be with the encoding. Try exporting the contacts on your old phone to a file. .vcf Using the contact management menu, transfer this file to the new phone and import it manually.
Is it possible to interrupt the transmission and continue later?
Unfortunately, Smart Switch's standard data transfer protocol doesn't support the "pause and resume" feature mid-transfer. If the connection is interrupted, the process will have to be restarted. However, if you're transferring data by category, you can transfer contacts first, and then photos in a new session.
Is it safe to share passwords and banking app data?
Smart Switch uses a secure local connection, and data doesn't pass through third-party servers. However, for maximum security, banking apps will still require you to reconfigure biometrics or a PIN on a new device, as they are tied to the specific hardware of the phone.
What should I do if my contacts were transferred, but not my photos?
Often, contact photos aren't stored in the phone database itself, but rather linked to an account (Google, Samsung, WhatsApp). Make sure you're signed into the same accounts on your new phone as you were on your old one and have permission to sync photos for each.