How to Activate Your Digi SIM Card
Activate your Digi SIM by inserting it into your phone, turning the device on, and following the on-screen prompts — most cards activate automatically within minutes, though you may need to contact Digi customer service if activation stalls.
Digi is a Malaysian mobile network operator, and their SIM cards work like most prepaid or postpaid cards: the network recognizes the card when you power on your phone, and activation usually happens in the background without you doing anything. If you bought your card in a Digi store or from an authorized retailer, it often comes partially activated already. The main thing you need to do is insert it correctly and give the network a few minutes to recognize it.
The process differs slightly depending on whether you have a prepaid card (pay-as-you-go) or a postpaid plan (monthly bill), and whether your phone is new or you are switching from another network. This guide walks you through both paths and explains what to do if your card does not activate on its own.
Key Takeaways
- Insert the SIM card into your phone's SIM slot, power on the device, and wait five to ten minutes for the network to recognize it — most Digi cards activate automatically without any action from you.
- If you bought a prepaid card from a Digi store, it may already be partially activated; if you bought it elsewhere, you may need to register it online or by phone before it works.
- Postpaid plans usually require you to complete registration through the Digi website or app within a set time frame, or the card will be suspended.
- If your phone shows no signal after ten minutes, restart the device, check that the SIM is seated properly, or contact Digi customer service at 012-391-0012 or through their website.
How to insert the SIM card into your phone
Most modern phones have a SIM tray on the side of the device. Look for a small slot, usually marked with a line or dot. Digi SIM cards come in three sizes — standard, micro, and nano — and your phone accepts only one size. If you are unsure which size your phone needs, check the phone's manual or search the model number online.
Use the SIM ejector tool that came with your phone (a small metal pin) or a straightened paperclip to gently push into the hole next to the SIM slot. The tray will pop out. Place the SIM card into the tray with the gold contacts facing down and the cut corner aligned with the slot's corner. Slide the tray back in until it clicks. Power on your phone and wait five to ten minutes for the network to recognize the card.
Prepaid SIM card activation
Prepaid Digi cards sold in Digi stores usually activate automatically when you insert them and power on your phone. You should see the Digi network name appear in your phone's network list within a few minutes. Once you see a signal, you can make calls, send texts, and use data (if you have purchased a data package).
If you bought your prepaid card from a third-party retailer or online seller, it may require registration before it works. Check the card's packaging or the receipt for instructions. You may need to visit the Digi website, use the Digi app, or call Digi customer service to register the card with your name and phone number. Some prepaid cards also require you to top up credit (add money to your account) before they fully activate.
Once activated, your prepaid balance is shown in your phone's settings or through the Digi app. You can check your balance by dialing *100# and pressing call, or by logging into the Digi app.
Postpaid plan activation
Postpaid Digi plans (where you receive a monthly bill) require more setup than prepaid cards. When you buy a postpaid plan, you receive a SIM card and a welcome pack with login details and instructions. Insert the SIM card and power on your phone as described above. You will usually have a set time frame — often 30 days — to complete your registration online or through the Digi app.
To register, visit the Digi website or open the Digi app and select "Register" or "Activate Plan". You will need to enter your personal details, verify your phone number, and set up a password for your account. Once registration is complete, your plan becomes active and you can use calls, texts, and data immediately. If you do not register within the time frame, your card may be suspended, though you can reactivate it by completing registration later.
What to do if your SIM card does not activate
If your phone shows no signal or no network name after ten minutes, restart your device first. Power it off completely, wait 30 seconds, and power it back on. This often fixes temporary connection issues. If you still see no signal, remove the SIM tray and check that the card is seated properly — the gold contacts should be clean and fully inserted into the slot.
If the card still does not work, try inserting it into another phone if you have one available. This tells you whether the problem is with the card or with your phone's SIM slot. If the card works in another phone, your phone may need a software update or a visit to a repair shop. If the card does not work in any phone, contact Digi customer service.
Contacting Digi customer service
If your SIM card does not activate after trying the steps above, reach out to Digi directly. You can call their customer service line at 012-391-0012 (available 24 hours) or visit a Digi store in person. Have your SIM card number ready — it is printed on the card itself and also on the packaging.
When you call, explain that your card is not showing a signal or network name. Digi can check whether the card is registered in their system, whether there are any blocks on the account, and whether your phone's settings need adjustment. They may also send you a replacement card if yours is faulty. If you are switching from another network, mention this, as Digi may need to port your old phone number to the new card — this process usually takes one to two hours.
Switching from another network to Digi
If you are moving your phone number from another Malaysian network (such as Maxis, Celcom, or U Mobile) to Digi, the process takes longer than a standard activation. You will need to request a number port from your old network, which involves providing your account details and a reason for the switch. Your old network will give you a code to provide to Digi.
Insert your new Digi SIM card and power on your phone. The card will activate with a temporary number while the port is being processed. Once the port is complete — usually within one to two hours, but sometimes up to 24 hours — your old phone number will switch to the Digi card. During this time, you may not be able to make or receive calls on either network, so plan the switch for a time when you do not need your phone urgently.
Frequently Asked Questions
How long does Digi SIM activation take?
Most Digi SIM cards activate within five to ten minutes of being inserted and powered on. Postpaid plans require you to complete online registration, which can take a few minutes to an hour depending on how quickly you fill out the form. If you are porting a number from another network, the full process may take one to two hours or up to 24 hours in some cases.
Do I need to do anything if my SIM card came from a Digi store?
Cards bought directly from Digi stores usually activate automatically when you insert them and power on your phone. Prepaid cards may require you to top up credit first. Postpaid cards require you to complete registration through the Digi website or app within 30 days. Check your welcome pack for specific instructions for your plan type.
What if I bought my Digi SIM from a reseller or online?
Third-party retailers sometimes sell Digi cards that are not yet registered. Check the packaging for activation instructions. You may need to register the card online, call Digi customer service, or visit a Digi store to complete activation. Some cards also require a top-up before they work.
Can I use my Digi SIM in a different phone?
Yes, you can move your Digi SIM to any unlocked phone that accepts the same SIM size (standard, micro, or nano). Insert it into the new phone and power on — it should connect to the network within a few minutes. Your balance, plan, and phone number stay the same.
What should I do if my phone says "SIM not recognized"?
Restart your phone first. If the message persists, remove the SIM tray and check that the card is clean and fully seated. Try the card in another phone if possible. If it works in another phone, your phone may need a software update or repair. If it does not work in any phone, contact Digi at 012-391-0012 to report a faulty card.