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To fix a G-SHOCK Bluetooth problem, first find the watch’s module number and follow the Casio guide for that exact module. The correct phone app and button sequence vary by model. Then check phone compatibility, app permissions, Bluetooth, Airplane Mode, distance, and whether the app is open; clear saved pairing records only if the module guide recommends it.
Start with the module number and the correct app
Look up the module number in the watch’s documentation or case-back information, then open Casio’s guide for that number. Do not assume another G-SHOCK’s instructions apply: Casio’s guides specify CASIO WATCHES for modules 3568 and 5724, G-SHOCK MOVE for module 3475, and G-SHOCK Connected for module 5594. App names and watch actions differ by module, and older watches may use a legacy app.
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Use the module guide’s current phone and operating-system compatibility information before troubleshooting further. The examples below are not a complete compatibility list, and support requirements can change.
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Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →| Module | App named in the cited guide | Documented connection detail |
|---|---|---|
| 3475 | G-SHOCK MOVE | Pair within one meter; check location permissions, including background location use. Casio Operation Guide 3475 |
| 3568 | CASIO WATCHES | Check phone compatibility, location services, and app permissions; clear pairing records if needed. An unused Bluetooth connection may end after about one hour. Casio troubleshooting guide |
| 3486 | CASIO WATCHES | Bring the phone within one meter; the app-connection limit can be set to 3, 5, or 10 minutes. Casio connection guide |
| 5594 | G-SHOCK Connected | The app must be running to reconnect; the guide gives a module-specific button B procedure and pairing-data reset. Casio troubleshooting guide |
| 5724 | CASIO WATCHES | Check phone support, Bluetooth, and the app; retry pairing after deleting pairing information if necessary. Casio troubleshooting guide |
If you can’t pair the watch with a phone
- Confirm compatibility. Check Casio’s phone and operating-system requirements for your module and region. Compatibility for one G-SHOCK model does not establish compatibility for another.
- Install and open the named app. Use the app specified in the module guide, not an app chosen because it supports a different G-SHOCK.
- Check phone settings. Turn on Bluetooth and grant the app the permissions requested by the guide. Some models require location access. For module 3568, Casio specifically calls for enabling phone location services and allowing the app to access location information. Casio module 3568 troubleshooting
- Turn off Airplane Mode on both devices. A phone or watch in Airplane Mode may not connect. Casio states for module 3568: “Connection with the watch is not possible while the phone’s Airplane Mode is enabled.” Casio module 3568 troubleshooting
- Bring the devices close together. For module 3475 pairing, Casio says to place the phone within one meter of the watch. Follow your own module’s setup distance and instructions; this is not a universal Bluetooth range. Casio Operation Guide 3475
- Follow the exact on-watch pairing steps. Button names, timing, and display indicators vary. Use the instructions for your module rather than trying a sequence from another model.
Check location access when the app requests it
On module 3475, the first time G-SHOCK MOVE starts, the phone may ask whether to enable location information acquisition. Casio’s guide also addresses location permissions and background location use. Review the app’s requested permissions in the phone’s settings and grant those required by the module guide. Casio Operation Guide 3475
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If you can’t reconnect the watch and phone
- Restore the connection state. If Bluetooth was switched off or the phone was powered down, turn Bluetooth back on or restore power, then open the correct Casio app.
- Keep the app running. Some models require the app to be active for reconnection. For module 5594, Casio says, “The watch cannot re-connect with your phone unless G-SHOCK Connected is running on the phone.” Casio module 5594 troubleshooting
- Use that module’s reconnection action. Module 5594’s guide, for example, says to hold button B until the second hand points to [R] twice. This is specific to module 5594, not a general G-SHOCK procedure. Casio module 5594 troubleshooting
- Check proximity and interference. The module 3486 connection guide says to bring the phone within one meter. Casio’s older module 5413 guide cautions that radio conditions can make usable range short even within two meters, so nearby devices or the surrounding environment may affect a link. Module 3486 connection guide; Module 5413 troubleshooting
If the connection drops after it has worked
A disconnect after a period of inactivity can be normal behavior rather than a pairing fault. On module 3568, an unused Bluetooth connection may end after about one hour. For module 3486, the app-connection limit is configurable to 3, 5, or 10 minutes. Check the watch’s module guide and settings before deleting records or resetting the connection. Module 3568 troubleshooting; Module 3486 connection guide
When to delete pairing records and pair again
If compatibility, app, permissions, Bluetooth, Airplane Mode, and proximity checks do not help, use the module guide’s procedure to remove stale pairing information. For modules 3568 and 5724, Casio advises removing pairing information from the app and phone and, if needed, from the watch before pairing again. Module 5594 also documents a watch-side pairing-data deletion procedure. The exact order and watch actions are model-specific; do not clear records using another module’s steps. Module 3568 troubleshooting; Module 5724 troubleshooting; Module 5594 troubleshooting
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What to do if it still won’t connect
- Recheck the module number and confirm you are using its specified app and pairing sequence.
- Check the module guide for supported phone and operating-system versions; do not infer support from a different watch.
- Confirm that the app has the required permissions, including location access where specified, and that Bluetooth is enabled with Airplane Mode off on both devices.
- Keep the devices close, open the app, and retry the module-specific connection action.
- Only then remove saved pairing information using the exact procedure for that module.
Casio’s official guides do not establish a universal G-SHOCK Bluetooth range or a general pairing-success rate. Their distance guidance and connection timeouts apply to the specific modules named in each guide.
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