What happens now that 3G service has ended? As of 31st July 2024, all mobile operators in Singapore, including Changi Mobile, have transitioned to 4G/ 5G networks to provide faster and more reliable mobile services. Why can’t I make/ receive call or SMS after I’ve used up my data? The 4G network is designed primarily for data. If your data is fully consumed, you may experience issues with making/ receiving calls or SMS. To continue using your voice and SMS services, please ensure you have sufficient data available.

To check your data usage: Download Changi Go App >>> Login your account in settling >>> Click Mobile icon on the homepage

Who is affected by the 3G shutdown? Affected Customers:

Those with 3G-only devices.

Those with 4G non-VoLTE devices or 4G devices that don’t support emergency calls on VoLTE.

Those who have set their network mode to 3G.

What should I do if I’m having issues with calls or data? Step 1: Ensure your device supports VoLTE and enables it in your phone’s settings for optimal call quality and simultaneous use of voice and data services.
Step 2: If your device does not support VoLTE, consider upgrading to a compatible 4G device to maintain uninterrupted service. How do I enable VoLTE on my phone? Go to your phone’s settings, find “Mobile Networks” or “Cellular Networks”, and enable VoLTE. The steps may differ depending on your phone model. How can I make sure my device is ready for 4G? Check Compatibility: Refer to your device manual or contact the manufacturer to confirm that your device supports 4G and VoLTE (including emergency calls).
To Enable 4G:

For Android: Go to Settings > Connections > Mobile Networks > Choose 4G.

For iOS: Go to Settings > Mobile Service > Mobile Data Options > Set to 4G.