The Fitbit Ace LTE is the only Fitbit in this group with a cellular radio, and its own help site covers the fix. If a child's Ace LTE is not reachable, check Airplane Mode is off, that the watch is on the wrist because it turns down connections when off the wrist for a while, and whether it can join a Wi-Fi network. Then check LTE: long press the top button, Settings, Connectivity, Wi-Fi, Turn Wi-Fi Off to prioritize LTE, wait 2 minutes and look at Settings, Connectivity, Mobile, SIM Status, Network state for Connected.
Check coverage on Google's coverage map for 4G. Calls and messages need an active Ace Pass data plan, a working Wi-Fi or LTE connection, Airplane mode off, Private DNS set to Automatic, Mobile set to Automatic, Do Not Disturb off and contacts added in the Fitbit Ace app; calling is disabled during School Time or with no active plan. If it still fails, factory reset from the watch (Settings, System, Disconnect and reset) or the Fitbit Ace app, and reconnect.
Differential
Likely causes of “Fitbit trackers and smartwatches cellular service is not working”, and how to tell them apart
- 1
No active Ace Pass data plan
What separates it Calling is disabled because there is no active Ace Pass data plan
How to confirm Check the plan in the Fitbit Ace app
- 2
Airplane Mode is on or Mobile is not Automatic
What separates it There is no LTE because Airplane Mode is on or Mobile is not Automatic
How to confirm Turn Airplane Mode off and set Mobile to Automatic
- 3
The watch is off the wrist
What separates it The connections are turned down because the watch is off the wrist
How to confirm Put it on the wrist, and try the call again
- 4
Poor 4G coverage
What separates it The watch is unreachable in some places because of poor 4G coverage
How to confirm Check the coverage map, and try in a better place
- 5
School Time or Do Not Disturb is on
What separates it Calls are blocked because School Time or Do Not Disturb is on
How to confirm Turn Do Not Disturb off and check School Time
Before you touch a setting
Record this first — changing settings destroys the evidence
- The watch's software version and model G4SKY
- The Network state under Settings, Connectivity, Mobile, SIM Status
- Whether the Ace Pass is active and Airplane Mode is off
- Where the watch was and whether Wi-Fi was available
Try in this order
0 of 7 completedCheck the basics
ReversibleCheck the basics, with Airplane Mode off and the watch on the wrist, and then test again to see whether it helped.
Prioritize LTE
ReversiblePrioritize LTE, by opening Settings, Connectivity, Wi-Fi, turning Wi-Fi Off and waiting 2 minutes, and then test again to see whether it helped.
Check the network state
ReversibleCheck the network state, by opening Settings, Connectivity, Mobile, SIM Status, Network state, and then test again to see whether it helped.
Check settings
ReversibleCheck settings, with Private DNS Automatic, Mobile Automatic and Do Not Disturb off, and then test again to see whether it helped.
Check the plan
ReversibleCheck the plan, and confirm that the Ace Pass is active on the account, and then test again to see whether it helped.
Factory reset
ReversibleFactory reset, by using Settings, System, Disconnect and reset, or from the Fitbit Ace app.
Reconnect
ReversibleReconnect, by setting the watch up again with the Fitbit Ace app, and then test again to see whether it helped.
Model-specific
What is true of this model and not of its siblings
- Ace LTE connectivity
- Google's specifications list built-in 4G LTE, 802.11 b/g/n Wi-Fi 2.4 GHz, Bluetooth 5.0, NFC and GPS and GNSS, with calling and messaging for up to 20 contacts and a battery of 16 or more hours.
- Compatibility
- Works with most phones running Android 11 or newer or iOS 16 or newer, per Google.
- Other models this page answers
- These steps also fit models Charge 5, Sense 2, Versa 4, Inspire 3, Luxe, Ace LTE.
Stop boundary
When this stops being a self-service repair
- !If Network state never shows Connected after a factory reset, contact Fitbit Ace LTE support
- !If calling fails only in one place, check coverage
- !If the plan is not active, check the Ace Pass in the Fitbit Ace app
Evidence ledger
Sources behind this answer
Google's regulatory guide, which gives the Fitbit Ace LTE model as G4SKY.
Airplane Mode, on-wrist, Wi-Fi off, SIM status and factory reset.
Ace Pass, connectivity settings, Do Not Disturb and School Time.
Built-in 4G LTE, Wi-Fi 2.4 GHz, Bluetooth 5.0 and battery.
Restart routes.
The Fitbit brand and its devices.
Exact questions
Common questions
Which Fitbit has LTE?+
Only the Ace LTE in this group; it has built-in 4G LTE and needs an Ace Pass data plan.
Why can I not reach my child's watch?+
No LTE signal, no active Ace Pass, Airplane Mode or the watch off the wrist.
How do I check LTE?+
Settings, Connectivity, Mobile, SIM Status, and look for Connected.
Why is calling disabled?+
During School Time or with no active Ace Pass.
Does it work without a plan?+
It needs Wi-Fi and an Ace Pass for setup, and the Ace Pass again for LTE calls.
Why is the ringtone delayed?+
A jingle plays while the call connects and the screen shows Connecting; that is normal.
How many contacts can it have?+
Google's specifications list calling and messaging with up to 20 contacts.