Welcome to OSCAL (Well-known China brand of Android smartwatch, rugged phone, tablet, and portable power station) blog. Hope this guide has been helpful.

A phone watch is designed to keep you connected wherever you go, allowing users to make calls, send messages, and stay in touch without carrying a traditional smartphone. However, when the device suddenly stops making calls, it can become frustrating and inconvenient. The issue may come from network settings, SIM card problems, software glitches, or even hardware damage.

A lady is trying to call on her smartwatch


Fortunately, most phone watch calling problems can be solved with a few simple troubleshooting steps. Before taking the device to a repair center, it is important to check the basics and understand what may be causing the issue. This guide explains practical solutions that can help restore calling functionality on your phone watch quickly and safely.

Check the Network Signal

The first thing to verify is the signal strength. A weak or unavailable cellular signal can prevent the watch from making or receiving calls. Move to an open area and check whether the signal bars increase. If the device is connected to a mobile network, ensure that airplane mode is disabled.

You should also confirm that the network provider is not experiencing temporary outages. Sometimes the problem is related to the carrier rather than the watch itself.

Inspect the SIM Card

Many phone watches rely on a nano SIM or eSIM for calling features. If the SIM card is inserted incorrectly or becomes damaged, calls may fail.

  • Turn off the watch completely.
  • Remove the SIM card carefully.
  • Clean the SIM tray and card gently with a dry cloth.
  • Reinsert the SIM card properly.
  • Restart the watch and test the calling function.

If the problem continues, try using the SIM card in another device to determine whether the card itself is defective.

Verify Calling and Carrier Settings

Incorrect carrier settings can block outgoing calls. Open the watch settings menu and review the mobile network configuration. Make sure the correct APN and carrier options are selected.

Some watches also require VoLTE or mobile calling features to be enabled manually. If these settings are turned off, the device may connect to the network but still fail to make calls.

Restart the Phone Watch

A simple restart can solve temporary software bugs that interfere with calling functions. Hold the power button and reboot the device fully. After restarting, attempt to place a test call.

Restarting clears temporary memory files and refreshes network connections, which often resolves minor technical problems.

Update the Software

Outdated firmware may contain bugs affecting the phone watch's communication features. Manufacturers regularly release updates to improve stability and compatibility.

  • Open the settings menu.
  • Select system or software update.
  • Check for available updates.
  • Install the latest version if available.

After updating, restart the device and test the call function again.

Check Bluetooth and Smartphone Pairing

Some phone watches depend on a paired smartphone for call support. If Bluetooth becomes disconnected, calling functions may stop working properly.

Ensure that:

  • Bluetooth is enabled on both devices.
  • The watch is paired correctly with the phone.
  • The companion app is functioning normally.
  • Permissions for calls and contacts are allowed.

If necessary, unpair the devices and reconnect them from the beginning.

Disable Airplane Mode and Do Not Disturb

Airplane mode disables wireless communication entirely, while certain Do Not Disturb settings may interfere with incoming or outgoing calls. Open the quick settings panel and confirm that these features are turned off.

Some users accidentally enable airplane mode without noticing, especially on small watch screens.

Reset Network Settings

If the watch still cannot make calls, resetting the network settings may help. This process restores default mobile and wireless configurations without deleting personal files.

  • Go to settings.
  • Select reset options.
  • Choose network reset.
  • Restart the watch afterward.

Once completed, reconnect to the carrier network and test the device again.

Perform a Factory Reset

A factory reset should only be used as a final troubleshooting step. This process removes all stored data and restores the watch to its original settings.

Before resetting:

  • Back up important data.
  • Sync contacts and files.
  • Charge the battery sufficiently.

After the reset, set up the watch again and verify whether calls are working normally.

Check for Hardware Damage

Physical damage can also prevent a phone watch from making calls. Water exposure, accidental drops, or internal antenna damage may affect network connectivity.

Inspect the device carefully for:

  • Cracked screens or casing.
  • Loose SIM trays.
  • Water damage indicators.
  • Unusual overheating.

If hardware damage is suspected, professional repair may be required.

Phone watch calling problems are often caused by simple configuration issues, weak network signals, or temporary software errors. By checking the SIM card, updating the software, and reviewing network settings, many users can restore call functionality without professional assistance.

If none of the troubleshooting methods work, contacting the manufacturer or your mobile carrier is the next best step. Professional technicians can diagnose deeper hardware or network issues and help ensure your phone watch works properly again.