How to Link Your Samsung Galaxy to Your PC, Tablet, and Buds via Multi-Device Sync

Samsung’s multi-device ecosystem in 2026 revolves around three pillars: Phone Link (Microsoft’s PC integration, rebranded from “Your Phone”), Samsung Flow (now deprecated — Samsung ended active development in 2023 and it is no longer updated on the Galaxy Store for newer One UI builds), and SmartThings / Quick Share / Multi Control for cross-device continuity. If you still see old tutorials pointing to Samsung Flow as the primary bridge, ignore them — the supported path for Windows integration is Phone Link via the “Link to Windows” toggle. Here is what actually works on a current Galaxy running One UI 6.1 or later, paired with a Windows 11 PC, a Galaxy Tab, and Galaxy Buds.

What “Multi-Device Sync” Actually Covers on a Galaxy

Samsung does not publish a single feature called “Multi-Device Sync.” Instead, you stitch together several built-in systems:

• Link to Windows → Phone Link — Mirrors texts, calls, photos, and screen onto Windows 11/10.
• Samsung DeX for PC / wireless DeX — Desktop-style Galaxy interface on a PC or Samsung TV.
• Quick Share — Cross-device file transfer between Galaxy phones, tablets, and Windows PCs via the Quick Share for Windows app.
• Multi Control — Lets one Galaxy Book or Galaxy Tab share a mouse and keyboard across your Galaxy phone and tablet.
• Galaxy Buds auto-switch — Seamless audio handoff between your phone, tablet, and Galaxy Book when all are signed into the same Samsung account.
• SmartThings Find / SmartThings app — Device discovery, tracking, and smart-home linkage.

Everything above depends on one common requirement: the same Samsung account signed in on every device, and Bluetooth + Wi‑Fi turned on. If a feature is missing, the account mismatch is the first thing to check — not the feature itself.

1. Set Up Link to Windows (Phone Link) — The Modern PC Bridge

This is the feature that replaced Samsung Flow for most users. It is built into One UI and does not require the Galaxy Store.

On your Galaxy:

1. Open Settings → Connected devices → Link to Windows.
2. Toggle Link to Windows on.
3. Tap Add computer and sign in with the Microsoft account you use on your Windows PC.
4. Approve the QR-code pairing.

On your Windows 11 PC:

1. Open Start → Phone Link (pre-installed on Windows 11; available free from the Microsoft Store on Windows 10).
2. Sign in with the same Microsoft account.
3. Choose Android → Samsung Galaxy, then scan the QR code from the PC with your phone.
4. Grant the permissions the phone prompts for (contacts, SMS, notifications, photos, and — if you want screen mirroring — display capture).

Once paired, you get SMS/RCS, calls over Bluetooth, recent photos (the last 2,000), app mirroring, and drag-and-drop file transfer. Phone Link is the only way to get full app mirroring from a Galaxy on Windows — third-party tools like scrcpy work but aren’t supported by Samsung.

2. Samsung Flow is Deprecated — Do This Instead

Samsung Flow still technically exists on the Galaxy Store and Microsoft Store, but the Windows client has not received a meaningful update since 2023, and Samsung removed Flow from the pre-installed app list on Galaxy S23 and later. Samsung Flow was the main way to mirror a Galaxy to a Windows PC and tablet. If an older guide tells you to install Samsung Flow, skip it and use Phone Link instead. For Galaxy-to-Galaxy-Tab workflows, use Multi Control (covered below) or Quick Share, both of which are actively maintained.

3. Pair a Galaxy Tab With Your Galaxy Phone (Multi Control & Quick Share)

Multi Control is the feature most tutorials miss. It lets one keyboard and mouse — typically on a Galaxy Book or Galaxy Tab in DeX mode — control a second Galaxy device sitting beside it.

1. On the controlling device (tablet or Galaxy Book), open Settings → Connected devices → Multi Control.
2. Toggle it on.
3. Sign into both devices with the same Samsung account and place them on the same Wi‑Fi network.
4. Position the tablet next to the phone. Slide the tablet cursor off the screen edge nearest the phone — it appears on the phone.
5. To copy text or files, highlight on one device and drag across the edge to the other. Ctrl+C / Ctrl+V also works across devices.

For one-off file transfers between a phone and tablet, skip Multi Control and use Quick Share:

1. Swipe down twice on both Galaxy devices to open the full Quick Settings panel.
2. Tap Quick Share on each device and set visibility to Contacts or Everyone nearby (Everyone nearby times out after 10 minutes for privacy).
3. On the sending device, share a file → tap Quick Share → tap the receiving device.

Quick Share on Windows works the same way once the Quick Share app is installed from the Microsoft Store.

4. Pair Galaxy Buds and Enable Auto-Switch

Galaxy Buds (Pro 3, FE, and newer) support auto-switch between up to three Samsung-account devices. This only works with Galaxy Buds — not third-party earbuds.

1. On your Galaxy phone, open the Galaxy Wearable app (install from the Galaxy Store if it isn’t there — it was removed from the pre-install list on the S25 series).
2. Put the Buds in pairing mode by holding them in the open case near the phone. A pop-up appears automatically.
3. Tap Connect, then follow the setup prompts. Update the Buds firmware when prompted — new firmware usually ships two to three times a year.
4. In Galaxy Wearable → Earbuds settings → Labs → Auto switch (on some builds this is under Earbuds settings → Connection), toggle Auto switch on.
5. Repeat the pairing process on your Galaxy Tab and Galaxy Book. All three must use the same Samsung account.

Audio now follows whichever device is actively playing. If both the phone and tablet play audio simultaneously, the Buds prioritize whichever started most recently — there is no manual priority setting as of One UI 6.1.

Quick LED reference for Galaxy Buds pairing issues:

LED Pattern	Meaning	Fix
Red blinking in case	Charging or firmware mismatch	Leave in case 30 minutes, then retry
Green steady	Fully charged	Normal
Red/green alternating	Pairing mode active	Proceed with Galaxy Wearable
No LED at all	Battery dead or case issue	Try replacement case — see below

Replacement Galaxy Buds cases and accessories (spot-check before publishing — Amazon listings may change):

• Samsung Galaxy Buds3 Pro (retail listing) — official unit.
• Silicone protective case for Galaxy Buds3 — third-party cover.
• USB‑C charging cable, Samsung OEM 3ft — if the Buds case isn’t charging.

5. Use SmartThings as the Glue

SmartThings is Samsung’s real multi-device hub — it sees every signed-in Galaxy device, every Galaxy appliance, and compatible third-party smart-home gear.

1. Open SmartThings on your phone (pre-installed on every current Galaxy).
2. Tap Devices → + → Add device.
3. Select Samsung for Galaxy phones/tablets/Books or Scan nearby for everything else.
4. Enable SmartThings Find from Settings → Security & privacy → Find my mobile so lost Galaxy devices, Tabs, and Buds show up on a map.

SmartThings also enables Call & Text on Other Devices, which routes phone calls to your Galaxy Tab or Galaxy Book over Wi‑Fi. Enable it under Settings → Advanced features → Continue apps on other devices.

6. Samsung DeX — Full Desktop Mode on a PC or Monitor

Wireless DeX still works in 2026 and is the easiest way to extend a Galaxy phone to a TV or PC monitor for productivity:

1. Swipe down twice on your Galaxy phone.
2. Tap DeX in the Quick Settings panel.
3. Pick a nearby Miracast-capable TV or a Samsung Smart Monitor. On a Windows PC, use Windows + K → select the phone.
4. A Bluetooth keyboard and mouse (or Multi Control from a Galaxy Book) drives the DeX session.

Wired DeX is identical — plug a USB‑C to HDMI adapter into the phone, and DeX auto-launches.

Troubleshooting Multi-Device Sync Problems

Real fixes for the failures that actually happen, not generic restart advice.

Phone Link stuck on “Connecting…” forever

The PC’s Microsoft account is signed into a different region than the Galaxy, or the phone’s Link to Windows service was force-stopped by an aggressive battery optimizer. Go to Settings → Apps → Link to Windows → Battery → Unrestricted, then toggle Link to Windows off and back on from the Quick Settings panel.

Galaxy Buds won’t auto-switch

Auto-switch requires all devices on firmware released within the same ~6-month window. Check Galaxy Wearable → About earbuds → Earbuds software update on each paired phone/tablet. If one device is behind, update it. The Buds store up to three pairing slots — a fourth pairing silently kicks out the oldest.

Multi Control cursor won’t cross between devices

The two devices must be on the same Wi‑Fi SSID (2.4 GHz vs 5 GHz on the same router is fine), on the same Samsung account, and within about three feet. Multi Control uses BLE for discovery and Wi‑Fi Direct for the cursor stream — if your router has Client Isolation / AP Isolation enabled, turn it off.

Quick Share can’t see the other device

Both devices must have Quick Share set to the same visibility tier. “Contacts” requires the sender to be in the receiver’s Samsung contacts (not Google Contacts). If that’s not set up, use Everyone nearby temporarily.

SmartThings Find says “Location services needed” even with Location on

As of One UI 6.1, SmartThings Find also needs Google Location Accuracy toggled on at Settings → Location → Location services → Google Location Accuracy. Samsung’s own setting alone is insufficient.

Samsung Flow won’t connect (if you insist on using it)

It probably won’t. Flow’s server-side certificates were last renewed in mid-2023, and current builds often fail the TLS handshake on Windows 11 24H2 and newer. Use Phone Link. There is no supported fix.

Warranty and Support

For hardware-level failures — a Galaxy Buds unit that never pairs, a Galaxy Tab that refuses to sign into the Samsung account, or a Phone Link pairing that fails on a fresh factory reset — Samsung’s US support line is 1-800-726-7864 and chat/ticket is at the Samsung Members app → Support. UK support is 0330 726 7864. Have your IMEI ready (Settings → About phone → Status → IMEI). If the device is in warranty, replacement turnaround is typically 5–7 business days in the US.

What To Remember

The cleanest 2026 Galaxy multi-device setup looks like this: phone signed into both a Samsung account and a Microsoft account, Phone Link on the PC, Multi Control between phone and tablet, Galaxy Buds auto-switch enabled on all three, and SmartThings Find turned on at the account level. Skip Samsung Flow — it’s a dead tool. Skip third-party mirroring utilities unless you need them for a non-Windows OS. Everything else is either a specific troubleshooting fix or a niche use case, not a daily-driver feature.