To make a call using your United Global SIM you’ll need to dial the full international number no matter what country you are calling from, or what country you are calling to. When dialling both locally and international remember to dial the full international format for all numbers.


Step 1. Dial the number you wish to call in full international format. For example, to call an Australian Mobile press + then enter the country code and drop the zero. You would dial on your Global SIM +61 491 570 110

To call the Canadian number 604-259-1641. You would dial +1-604-259-1649

Step 2. Press the call button. In a few seconds your phone will ring and you need to answer this call.

Step 3. Your call will be connected. At the end of the call you will receive a message with the cost of your last call.


Tip!  To make it even easier to dial, make sure you change your favourite contacts into the international format. You’ll be able to dial them using this format when you return to Australia so you won’t need to switch the numbers back.


Troubleshooting calls

If you find that you are dialling correctly but still cannot make a call, please manually select a different carrier in your phone Settings. To do this on most phones you can go to Settings > More Network or Carrier > Switch Automatic Off and select another network available.


If you still have difficulty making the call, try replacing the + with a * and adding a # at the end. For example, *61 491 570 110# for the Australian number or *1-604-259-1649# for the Canadian number. 

To call you directly from a mobile:

  • enter ‘+’ (plus sign)
  • then your Global SIM number starting with 44

Example: from any mobile phone dial: + 44 ### ### ####

Note:  the + sign is recognised by all networks in the world as the universal exit code for mobiles instead of dialling a exit code.

Hint: Generally you will find the '+' sign on either the '0' button, or one of the buttons either side of the '0' button, by holding the 0 down it will convert to a + or press the respective button on your phone.

To call you directly from a landline: 

  • enter International Exit Code
  • then your Global Sim number

Example: from an Australian landline dial: 0011 44 ### ### ####

Hint:  International Exit Codes or International Direct Dialling Codes (IDD) are required to dial internationally out of a country. 

People calling you on your Global SIM will be charged for a call to the UK. It will vary on the carrier and agreements the person has with their provider. You can also log in online and activate a United Global SIM Local Number service to alleviate these costs. 

A Local Number will allow your friends and family to contact you by using a Local Number instead of your Global SIM phone number. This means that they will be charged at a local rate.

To find out more about Local Numbers please see the Common Questions tab on Local Numbers.

If you are experiencing difficulty making calls this may be one of 2 factors.

You may not be dialing correctly or you may be on an unsupported network.

Step 1. You should first check that you are dialing correctly. To call from your Global SIM, you need to call in the full international format. This means you need to call with a + then country code then the number.

If you find that you are dialling correctly but still cannot make a call, try replacing the + with a * and adding a # at the end.

If you are calling an Australian Mobile 0491 570 110, you will be dialing on your Global SIM, +61491 570 110 or *61491 570 110#

Step 2. Try manually selecting a different carrier: 

On an iPhone:
Step 1. Go to Settings on your iPhone
Step 2. Scroll down to find Carrier
Step 3. Switch 'Automatic' OFF
Step 4. After searching please select a network from the list

On an Android:
Step 1. Go to Settings on your device 
Step 2. Find Wireless and Networks 
Step 3. Then click on Mobile Networks or Network Operators
Step 4. Your device will now search for networks around you
Step 5. Select one of the networks on the list to be connected

Using all other mobiles:
Step 1. On the main Menu of your device, find Settings
Step 2.  Look for the option Mobile Network or Connectivity
Step 3.  Scroll down until you can find the option called Operators or Network Selection
Step 4. Select Manual search 
Step 5. Once search is complete, simply select one of the networks on the list to be connected.

You must always dial the full international number, no matter where you are calling from or where you are calling to:

When calling someone in the same country as you, always dial as though you are calling from outside the country.

How to call Landline (fixed) numbers
  • + (plus sign)
  • Country code
  • Area code (removing the first zero*)
  • Local phone number

Example:  To call this Australian landline number from your Global SIM:  02 9003 9560 you would dial:  +61 2 9003 9560

How to call Mobile numbers
  • + (plus sign)
  • Country code
  • Mobile phone number (removing the leading zero)

Example:  To call this Australian mobile number from your Global SIM:  0491 570 110 you would dial:  +61 491 570 110

Hint:  Save all contacts in the full international format when adding contacts.

*200# for Global SIM customer service

*222# for making free test call

*133# for your Global SIM phone number 

*187# for your account balance 

*221# to add more credit to your account 

*121# to access voicemail 

*122# to turn voicemail on 

*123# to turn voicemail off 

*125# to check voicemail settings 

*172# to retrieve data settings