Thank you for the email.
The “Block International Incoming Calls” function in the Zero1 App applies only within Singapore.
When you are roaming overseas (e.g. in Malaysia),
international incoming calls will still come through and be chargeable under roaming voice rates, regardless of whether you answer the call.
Please note that roaming is provisioned as a complete service bundle, which includes:
• Roaming Data
• Roaming Voice
• Roaming SMS
These components cannot be enabled or disabled separately — they work together as one package.
While overseas, kindly take note:
• Incoming and outgoing voice calls, as well as outgoing SMS, are chargeable based on roaming rates.
• Incoming SMS are free of charge and will still be delivered to your Zero1 line, as long as you are connected to our supported roaming partner network.
You may refer to our full roaming voice and SMS rates here:
https://support.zero1.sg/kb/a215/what-are-the-roaming-voice-and-sms-rates.aspx
Yours Sincerely,
Doris
Zero1 Team