How to change your Telkomsel ring back tone using *121

Telkomsel’s *121 shortcut opens a USSD menu for managing services, including the ringback tone heard by the person calling you. This caller-side alert is separate from the ringtone on your handset, so changing it does not alter the sound made when someone calls your phone.

If you use Telkomsel while travelling in Australia, the same short code can be convenient, although availability depends on your subscription and roaming network. Check whether the menu is still offered on your line before changing anything.

Know what the service can change

A ringback tone, also called a call-back tone or RBT, plays to the caller while your phone is ringing. It differs from your handset ringtone, which only plays for incoming calls. Telkomsel may offer several programmed sounds or music tracks through its *121 service.

Only Telkomsel subscribers can normally manage this feature. A SIM from Telstra, Optus or Vodafone will follow its own carrier’s menu, even if you make calls using an Indonesian contact. Telkomsel numbers generally begin with 08 and use the +62 country code.

Service layouts, charges and available tones can change over time, particularly for older prepaid accounts. Understanding the available carrier service options helps you identify whether *121 is the correct menu for your particular Telkomsel plan.

Prepare the line before you dial

Confirm that the Telkomsel SIM is active, has enough credit or account balance, and is registered for the relevant ringback service. On a dual-SIM handset, check that the correct line is selected before opening the USSD menu.

Review your recent balance and any subscription charges before activating a track. Some ringback tones are free, while premium choices can incur fees in Indonesian rupiah. Do not disclose your PIN or personal account details if a menu requests them.

Change the tone through the USSD menu

Open the phone app or keypad on your mobile, enter *121 and press the call button. The screen should display a short USSD menu. If nothing happens, check that mobile data or the correct SIM is active, then try again.

Look for an option labelled “Ringback Tone”, “Ringback” or “My Ringback Tone”. Older menus may use a different translation or place the option beneath a general sound settings heading. This ringback tone guide provides useful context for distinguishing caller alerts from ordinary handset ringtones.

Choose the option to activate or change the tone, then select “On”, “Activate” or “Change”. A list of available sounds should appear. Pick the track you want callers to hear rather than the ringtone currently assigned to your handset.

Confirm your selection with “Yes” or “OK”. The menu may close automatically after a short timeout, so complete each stage without interrupting the session. Wait for a confirmation message or an SMS from Telkomsel before ending the process.

Verify the new ringback tone

Check that you received a confirmation SMS showing the selected tone, its status and any subscription charge. If the message reports a different track, repeat the process and verify the final confirmation screen.

Place a test call using another mobile and ask the other person what they heard while your phone rang. Your handset will still use its usual incoming ringtone. If the caller reports the previous tone, repeat activation or contact Telkomsel to check whether the service is subscribed correctly.

Handle roaming safely in Australia

Australian mobile numbers commonly begin with 04 and use the +61 country code, whereas Indonesian Telkomsel numbers use 08 and +62. If you carry both SIMs, select the Telkomsel line before entering *121, and check that international dialling or calling restrictions have not blocked USSD requests.

In Sydney, Melbourne or other Australian cities, a roaming Telkomsel SIM will use a local host network such as Telstra, Optus or Vodafone. Some host networks permit USSD menus, while others restrict them or provide a different menu. Confirm that *121 works on the particular network before assuming the service has failed.

Roaming usage may be charged in Australian dollars and displayed under Australian billing and GST rules. Ask Telkomsel about international ringback charges before activation. Also remember that Indonesia observes Central Indonesia Time, two hours behind Eastern Standard Time in Sydney and Melbourne, although Australian daylight saving changes the difference during part of the year.

Solve common menu and activation problems

If no menu appears, the short code may be unavailable on your roaming network, your line may not support the service, or the handset may be blocking USSD requests. These checks can prevent repeated attempts from generating charges:

• Confirm that the active SIM is the Telkomsel line and that it has credit or an active post-paid account.
• Move to an area with a stable mobile signal and try *121 once more.
• Check the confirmation SMS and balance after every successful menu session.
• Avoid premium tones until you have checked their recurring subscription price.

If the menu opens but the tone does not change, deactivate the current selection and activate it again, or select “Restore default” before trying another track. Some accounts require the ringback service itself to be subscribed before individual music can be applied.

A missing contacts list is a separate handset issue rather than a ringback problem. If you are moving from an old Nokia to an Android device, this Nokia contact transfer guide can help you preserve numbers before troubleshooting call history. For unresolved activation errors, give Telkomsel support your SIM number, location and the exact response shown by *121.

Put your new ringback tone into use

Open *121 on your active Telkomsel SIM, select a clear tone and complete the confirmation prompts. Check the balance and test the result with a second mobile before making or receiving important calls.

Avoid choosing a long or complex track if your calls often connect quickly. A short, recognisable ringback tone gives Australian callers a clear indication that their call is being connected while keeping your monthly charges under control.