How to Enable Sync Over Mobile Data in Phone Link for Windows 11
- 10 steps
- Includes a restart or sign-out
Sync over mobile data in Phone Link lets your Windows 11 PC pull photos, text messages, and app notifications from your phone over a cellular connection instead of Wi-Fi. By default, Phone Link stops syncing over mobile networks to protect your data plan. All current Windows 11 versions let you turn off this restriction, so your devices stay connected when you are away from Wi-Fi.
The setting is the same on Home and Pro editions of a currently supported Windows 11 version (25H2 or 26H2). Microsoft ended updates for 24H2 Home and Pro on October 13, 2026, so update if you are still on it. This setting depends on a compatible Android phone running the Link to Windows app. Phone Link also works with iPhone, but with fewer features, and the phone steps here may not apply.
Before you start, make sure the PC and phone are signed in to the same Microsoft account and already paired.
Open Phone Link on your PC, click the gear icon in the top right, select the General tab, and switch on “Allow my app to sync over mobile data when I’m not connected to Wi-Fi” under Connection optimization. The change takes effect straight away, with no restart needed. Your phone’s Link to Windows app also needs Background data usage enabled.
Why use this feature?
Field trips and travel often leave you without reliable Wi-Fi, so a cellular fallback keeps messages and photos updated. It also means you do not miss notifications while you work on desktop tasks.
It helps most when your PC is on a hotspot, a hotel network that blocks device-to-device traffic, or a guest network that isolates devices. In those cases the PC and phone cannot see each other directly. The mobile data connection fills the gap.
What happens when done?
If your plan is small or you are roaming, think twice before leaving this on. You can turn it off again at any time using the same setting.
How to sync over mobile data on your PC
Check these requirements before you begin. Your PC and your Android phone must both be signed in to the same Microsoft account, and they must already be paired in Phone Link. If you use an iPhone, the phone side works differently and this mobile-data setting may not be available. Then open Phone Link on your PC and follow the steps in order.
- Open the Phone Link app on your computer.
- Click the Settings button (the gear icon) in the top right corner.
- Select the General tab.
- Look for Connection optimization.
- Toggle the switch for “Allow my app to sync over mobile data when I’m not connected to Wi-Fi” to On.
That’s it. Phone Link on your PC is now allowed to sync over your cellular connection, not only over Wi-Fi.
The change usually takes effect straight away in Settings, and you do not need to restart the PC. If your phone still seems to sync only on Wi-Fi, close Phone Link and open it again. To undo the change, go back to the same setting and switch it off.
If you cannot find the option at all, check that Windows 11 is on a currently supported version, such as 25H2 or 26H2. Also confirm that Phone Link and the phone app are fully updated.
How to sync over mobile data on your phone
Phone Link can only use mobile data if the Link to Windows app has permission to do so. Check this on your phone. Android versions and phone makers label these screens a little differently, so the wording may not match exactly.
- Open the Settings menu on your Android device.
- Search for Apps or Application Manager.
- Find and tap on Link to Windows.
- Tap on Mobile data.
- Ensure Allow background data usage is toggled On.
That’s it. The Link to Windows app on your phone now has the access it needs to use mobile data.
If the data or background permission is switched off, Phone Link may connect on Wi-Fi but fail on cellular. Your phone’s data saver mode can block the app too, so check that as well.
Data Usage Comparison Table
| Feature | Estimated Data Impact |
|---|---|
| Text Messaging | Very Low |
| Viewing Photos | Moderate |
| Screen Mirroring | High |
Troubleshooting Phone Link Connectivity Issues
Fixing Phone Link mobile data sync problems usually comes down to checking a few settings on both your PC and phone. Start by making sure you are signed in to the exact same Microsoft account on both devices. Then check that the Link to Windows app has permission to run in the background without battery limits. Battery optimization and data saver features are the most common reason sync stops after a while.
- Battery OptimizationGo to your phone settings and set Link to Windows to “Unrestricted” battery usage.
- Microsoft AccountEnsure you are signed into the same account on both devices.
- PermissionsVerify that the app has permission to access photos and contacts.
If the problem remains, sign out of Phone Link on both devices and sign in again. Then repeat the permission checks above. Check that the phone actually has a working mobile data connection, because Phone Link cannot sync over a cellular signal that is not delivering data.
For more in-depth help, visit the official Microsoft Support Link to Windows page.
Administrative Privileges Note
Summary
Enabling Phone Link mobile data sync gives you a reliable link between your PC and phone when Wi-Fi is not available. Managing background data restrictions and power profiles keeps it working consistently. Keep an eye on how much data you use, so your carrier’s bill holds no surprises.
Does syncing Phone Link over mobile data consume a lot of battery?
Cellular communication demands higher transmission power than local Wi-Fi networks. Maintaining a steady tower signal while transferring files drains batteries faster. Keep a power charger nearby during extended synchronization sessions.
Why is my Phone Link not syncing photos over cellular data?
Background limitations usually trigger this behavior. Check app preferences to ensure “Allow background data usage” remains active for the Link to Windows app. Confirm active carrier status to rule out low-data state throttling.
Frequently asked questions
Can I connect phonelink without internet?
Phone Link needs an internet connection to sync photos, texts, and notifications. Without internet, the connection drops and those features stop. Calls can still work over Bluetooth if your phone is paired with the PC. Connect to Wi-Fi or use a mobile hotspot to restore full syncing.
How to enable mobile hotspot in 🪟 Windows 11?
Open Settings, select Network & internet, then choose Mobile hotspot. Turn on Share my internet connection with other devices. Other devices can then connect to your PC's internet using the network name and password shown on that page. Change the password there if you want a stronger one.
How to uninstall phone link?
Open Settings, select Apps, then Installed apps. Find Phone Link, select the three-dot menu beside it, and choose Uninstall. Unlink your phone in Phone Link before you uninstall, so the pairing does not stay active on the PC.
What is phone link?
Phone Link is a Microsoft app built into Windows 11 that connects your Android phone or iPhone to your PC. It lets you read and send texts, view recent photos, make calls, and see phone notifications on your computer. Both devices need to be signed in to the same Microsoft account.
How to disconnect phone link?
Open Phone Link on your PC and select Settings. Choose the option to unlink your phone, then confirm. Your PC stops receiving messages, photos, and notifications from the phone. You can pair the phone again later from the same screen.
How to remove phone link?
First unlink the phone in Phone Link on your PC. Then open the Link to Windows app on your Android phone and remove the connection there. This stops the phone sharing data with the PC. To remove the app from the PC as well, uninstall Phone Link from Settings.
Still have a question?
Answered by AI from this guide. Good questions may be added to this page — please don't include personal details.
Did this guide fix your problem?
About the Author
Richard
Tech Writer, IT Professional
Richard is a writer at Geek Rewind who turns complex IT tasks into clear, step-by-step guides. He draws on years of hands-on experience in system administration and enterprise IT operations, focusing on Windows, Linux and WordPress: the problems people actually run into, and the fixes that work. His server and WordPress guides come from systems he runs himself. Richard builds and maintains the platform behind Geek Rewind, from its Ubuntu servers and Nginx configuration to its custom WordPress plugins. Many new tutorials start with readers' questions, and he's always glad to answer them in the comments.
[…] can choose how to display notifications, choose to hear audio from the PC or phone, turn allow the phone link app to sync over mobile without Wi-Fi on or off, unlink your phone from Windows, enable or disable auto startup for the phone link […]