A guide on
How to activate your physical Zero1 SIM card
Last updated 07 Jan 2025
Quick Guide: Activate Your Physical Zero1 SIM Card
Note for port-in numbers
The port-in process will begin only after you start activating the SIM card. Your previous carrier will usually disconnect within 3 business days. You may begin using Zero1 services after your previous carrier’s signal disconnects.
Note for self-collected SIMs from Mosi Mosi or ShortQ
Do initiate your SIM activation requests only after 2pm on the following business day if you have collected your SIM card on a Friday / Saturday / Sunday / eve of public holiday.
Once you receive your SIM card, activating it is simple and hassle-free with Zero1! You can complete the process through the Zero1 app or on the Zero1 website:
- In the app: Simply log in and select the SIM activation icon to get started.
- On the website: You’ll find the activation link in your order confirmation email or by scanning the QR code in the SIM card packaging.
Once you’re on the activation page, simply follow the steps, and your SIM card will be up and running in no time!
Step 1: Log in to your Zero1 account


Step 2: Enter your SIM card details
Enter the SIM card serial number or select “Scan” to scan the barcode to initiate the activation process.

Step 3: Verify your identity via Singpass



Step 4: Activation in progress
Step 5: SIM card activated
For new numbers
SIM card activation is immediate, allowing you to start using Zero1 services right away.

For port-in numbers
Activation may take up to 3 business days. You may begin using Zero1 services as soon as your previous carrier’s signal disconnects.

General FAQ
1. How long does it take to activate my physical SIM card?
- For new numbers, physical SIM card activation is immediate, allowing you to start using Zero1 services right away.
- For port-in numbers, activation may take up to 3 business days. You may begin using Zero1 services as soon as your previous carrier’s signal disconnects.
2. When can I activate my physical SIM card if I choose self-collection?
If you collected your SIM card at Mosi Mosi or ShortQ on a Friday / Saturday / Sunday, you may only initiate the activation request after 2pm on Monday. This applies to both new lines and port in mobile services.
3. Can I activate my physical SIM card on any mobile device?
Yes, you can activate your physical SIM card on any compatible mobile device. Ensure that your device is unlocked (not tied to a specific carrier) and supports the Zero1 network.
4. Can I activate my physical SIM card without using Singpass?
No, Singpass verification is required for identity verification as part of the activation process to ensure security.
5. Do I need an internet connection to activate my physical SIM card?
Yes, an internet connection is required to log in to your Zero1 account and complete the activation process through the Zero1 app or activation page.
6. How will I know if my physical SIM card has been successfully activated?
You will receive a confirmation email once your SIM card is activated. For new numbers, you may insert your SIM card immediately. For port-in numbers, wait for your previous carrier’s signal to disappear, then insert your Zero1 SIM card.
7. What should I do if I am unable to activate my physical SIM card?
If you encounter issues during activation, please contact Zero1 Customer Support for assistance.
Don't have the Zero1 mobile app yet?
Google Play Store
for Android devices
Apple App Store
for Apple devices
Having issues?
We are happy to help, just message us on Facebook or send us an email at yes@zero1.sg should you encounter any challenges.
More information
Zero1 develops life solutions by making it #AllAboutYou, ensuring that you receive #OnlyTheBest of what we can offer.
Zero1 is a licensed Mobile Virtual Network Operator (MVNO) that provides a number of mobile plans with all your connectivity needs. Do check out our other offerings on the Zero1 website today.
Get Started Today!
This guide is part of a series of guides to help users get started on their Zero1 connectivity journey.
Discover how to set up your new Zero1 SIM via the links below: