Roam with your prepaid SIM. Here's how:

To activate roaming: SMS [ON] to 125 before you leave Cambodia
To make calls while abroad: Dial [+][country code][area code][mobile number]
How to check balance while abroad: Dial [#124#]
How to top-up while abroad: Dial [*123*][14 digit code][#]
To de-activate roaming: SMS [OFF] to 125

Incoming and outgoing call charges will vary from country to country. As low as $1.2 for outgoing local calls and as low as $0.005/kb for data.
Call-Back service also available. To make calls while abroad using the Call-Back Service: Dial [*125*][mobile number][#]
Incoming and outgoing calls using Call-Back service will be charged at $2.50/min.

To activate your postpaid roaming service, you’ll need either of the following:

• A USD500 security deposit (fully refundable after 45 days of notification date), OR
• A corporate guarantee letter from your company or organization.

Once the above is secured, call our hotline, or proceed to the Cellcard head office to fill out an activation form.

How to make calls while roaming: Dial [+][country code][area code][phone number]
How to send SMS while roaming: Type your message and send to [+][country code][area code][phone number]

Incoming and outgoing call charges will vary from country to country. To save on roaming, refer to our preferred network partner listing.