Selling a smartwatch with an eSIM involves three separate jobs, and skipping one leaves the buyer stuck. You need to remove the eSIM profile, cancel or transfer the carrier subscription, and clear any ownership lock tied to your account. A factory reset alone handles none of these completely.
On an Apple Watch, a plain reset wipes the screen but leaves Activation Lock active, which means the buyer gets stopped at setup and asked for your Apple Account password. On a Galaxy Watch or Pixel Watch, the risk looks different: the cellular plan or account pairing can survive a reset if you skip the disconnect step first.
The reliable path is to remove the cellular plan, unpair or disconnect the watch from its mobile app, and confirm the carrier subscription is cancelled or transferred before you ship anything. This matters whether you’re preparing to list the watch or you’ve already handed it over and need to lock things down remotely.
How Do You Remove Cellular Data and Reset Each Watch?
Each smartwatch platform handles eSIM removal and resetting differently, but the goal is the same: strip the cellular profile, disconnect the watch from your account, and restore factory settings. Apple Watch owners work through the iPhone’s Watch app, Galaxy Watch owners use the Galaxy Wearable app alongside on-watch reset menus, and Pixel Watch owners use the Disconnect & reset flow built into Wear OS.
Apple Watch: Remove the Cellular Plan and Unpair Using Your iPhone
Unpairing through your iPhone is the correct method, not an on-watch reset. Keep your Apple Watch and iPhone close together, then open the Watch app on your iPhone.
- Go to the My Watch tab and tap All Watches.
- Tap the info (i) button next to the watch you’re selling.
- Tap Unpair Apple Watch, then confirm by tapping Unpair [your watch name].
- When prompted about your cellular plan, choose Remove Plan. Keeping it only makes sense if you plan to re-pair the same watch later.
- Enter your Apple Account password to disable Activation Lock, then tap Unpair.
This process creates a backup on your iPhone, erases the watch, restores factory settings, and turns off Activation Lock in one pass, according to Apple’s own unpairing instructions. Removing the plan through the Watch app clears the eSIM profile from the watch, though it doesn’t automatically stop carrier billing, a separate call or online request handles that part, as Apple explains in its eSIM removal guidance.
If you don’t have the paired iPhone, you can erase the watch directly: open Settings, tap General, then Reset, then Erase All Content and Settings. This wipes the watch but leaves Activation Lock in place, since only unpairing through iPhone removes that lock.
Galaxy Watch: Remove the Mobile Plan and Reset Through the Galaxy Wearable App
Galaxy Watch models use the Galaxy Wearable app and a Samsung Account rather than Apple’s Activation Lock system, but you still need to clear the mobile plan before reselling. Open the Galaxy Wearable app on your paired phone and locate your watch’s mobile plan settings to remove the line before resetting the device.
On the watch itself, go to Settings > General > Reset to restore factory settings. Confirm afterward, in the Galaxy Wearable app, that the watch no longer shows as linked to your Samsung Account. If a Google Account was also signed in on the watch, sign out of that separately before handing the watch over.
Pixel Watch: Erase the eSIM and Disconnect and Reset
Pixel Watch owners clear both the eSIM and the account link through the Disconnect & reset option in system settings. On the watch, go to Settings > System > Disconnect & reset, which erases paired data and removes the eSIM profile in the same step.
After resetting the watch, open your Google Account settings on your phone and remove the Pixel Watch from your list of connected devices. This prevents the watch from showing up tied to your account if the buyer later tries to pair it fresh.
Already Sold Your Apple Watch? Erase It Remotely and Remove Activation Lock
You can still erase an Apple Watch after it has left your hands, as long as it was linked to your Apple Account through Find My. Go to icloud.com/find on any browser, sign in with your Apple Account, and locate the watch in your device list.
Select the watch and choose the remote erase option. Once erasure finishes, remove the watch from your account entirely so Activation Lock releases and the buyer can complete setup without your password. Skipping this last removal step is a common mistake: the erase itself doesn’t automatically clear the device from your Find My list.
How Do You Stop Charges and Confirm the Watch Is Ready to Sell?
Stopping cellular charges and confirming the watch is unlocked are two different checks, and both need to happen before the buyer powers on the device. Removing the eSIM profile from the watch doesn’t cancel your carrier line, and a successful-looking reset screen doesn’t guarantee Activation Lock is off.
Cancel or Transfer the Carrier Subscription to Prevent Continued Charges
Contact your carrier directly to cancel or transfer the cellular line tied to your smartwatch, since removing the plan from the Watch app or Wear OS settings only clears the device-side profile. Most carriers bill the watch line as an add-on to your phone plan, and that line keeps charging until you call, chat, or cancel through the carrier’s account portal.
If you’re transferring the watch to a new owner who wants to keep cellular service, some carriers allow a plan transfer to the buyer’s account instead of a straight cancellation. Confirm which option your carrier supports before finalizing the sale price, since a transfer can be a selling point worth mentioning in your listing.
What Happens If the Buyer Receives a Watch Still Linked to You?
A buyer who receives a watch still tied to your Apple Account hits a password prompt at setup and cannot activate the device. This is the most common complaint tied to secondhand smartwatch sales, and it traces back almost always to a reset that skipped the unpairing step.
For Galaxy Watch and Pixel Watch, the failure mode looks different: the buyer may be able to set up the watch but find the eSIM won’t provision on their carrier because your subscription is still attached to it. Either problem usually means a refund request or a return, which costs you both the sale and the shipping cost.
Check Data Erasure, Account Locks, and Setup Before Shipping
Confirm three things before you package the watch: the screen shows the initial pairing or setup screen (not your watch face or apps), Activation Lock is off (check by trying a test pair, or confirm the watch no longer appears in your Find My device list), and Apple Pay cards are removed. Unpairing and erasure strip local personal data and Apple Pay cards from the watch automatically, but none of this deletes your iCloud content stored elsewhere, since that lives separately from the device itself.
Never share your Apple Account password, Samsung Account password, or Google Account password with a buyer, even temporarily to “help them set it up.” A watch that still needs your password to activate is not ready to ship, regardless of how clean the screen looks.
Sellers who are also parting with the paired phone should handle that device with the same care; the steps to prepare an iPhone before selling it cover the same account-removal logic from the phone side.
Sell Your Properly Unlinked Smartwatch to Gizmogo
Once the eSIM is removed, the carrier line is cancelled or transferred, and Activation Lock is off, your watch is ready for a buyback offer. Gizmogo buys smartwatches in a range of conditions, including devices with cosmetic wear or reduced battery health, and Gizmogo’s purchase process for Apple Watch models accepts the watch once it’s confirmed unlinked from your account.
If you’re comparing where to send a used Apple Watch, it helps to review the options available for selling an Apple Watch before settling on a buyer. For specific generations, Gizmogo lists dedicated trade-in pages such as Apple Watch Series 9, Apple Watch SE, and Apple Watch Series 6, each reflecting pricing for that model’s condition and cellular status.