Terms & Conditions

1. [Obligation] By subscribing to ZYM Mobile, you agree to the Service Agreement written here
2. [Law Enforcement and Other Matters Act] Under this new law which came into effect on 1 January 2025, All SIM cards must be registered using the registrant’s personal particulars (i.e., Singaporean NRIC/FIN). The person registering the SIM card must be present and use their own Singpass and/or physical NRIC/FIN for verification. It is an offense for the registrants to pass the SIM card to another person, or to register a SIM card using someone else's information, unless for legitimate purposes. Those found guilty of misusing SIM cards can face imprisonment of up to 3 years, a fine of up to $10,000, or both.
3. [Scam Prevention] ZYM Mobile and its resellers may deny service to suspicious signups and suspend numbers with unusual activity. Suspended users must verify their identity in person at ZYM HQ and explain the high volume of calls or messages to restore service
4. [Obligation] Subscribers with ZYM Mobile's no-contract plans must remain subscribed for a minimum of 2 months. Prorate period is considered as the first month. Porting out during this period may be permitted, subjected to case by case basis. However, any subscription payments made will be non-refundable.
5. [Number Port] Usually, it takes up to 5 working days to port-in a phone number from existing Telco to ZYM. From time to time, a subscriber's port-in may be delayed / fail due to many reasons, such as incorrect customer information, technical issues, or delays on the part of the previous carrier. In the event of a port-in failure, ZYM Mobile is not liable for any delay or inconvenience caused. No refund / compensation shall be considered. Know more about common Port-in failure here
6. [Number Port] Subscriber's port-in number must fulfill the obligation(s) from your existing Telco. ZYM Mobile is not liable for any early termination charges, or other related fee, imposed by your existing Telco. Know more about Port-in eligibility here
7. [Number Port] If subscriber initiates a port-out request before the end of the month, but the actual port-out occurs in the following month, you will be charged for the full month. In this situation, no partial refunds or prorated charges will be applied. To avoid this, please plan the port-out at least 7 - 10 working days in advance.
8. [Number Port] Subscribers may port-out their number, but any prorated or advance fees are non-refundable, and port-out requests will be rejected if the subscriber is under contract, the mobile number is suspended or terminated, or there is an outstanding bill.
9. [Preferred Roaming Partners] To ensure a smooth connection, enable data roaming in your phone's settings and disable any other SIM cards. For each plan subscription that comes with Free Monthly Roaming Data, be sure to connect to the preferred Telco. List of preferred Telco
10. [Billing] To avoid account suspension and eventually, termination, please ensure your outstanding bill is paid on time. If your account is terminated, you will not be able to retrieve back all mobile numbers associated with the account. To understand more on our billing cycles, refer to the FAQ here
11. [Billing] Each subscription plan is billed on 1st of each month and subscribers should expect to receive their the bill invoice by 5th of the same month.
12. [SIM Order] To ensure a smooth SIM activation process, customers MUST accurately enter their Name, NRIC/FIN number, and Date of Birth during the SIM card ordering process on www.zym.sg. These details will be used to verify the customer's identity at the time of SIM activation.
13. [SIM Order] While you can cancel your SIM order by contacting ZYM customer care, kindly note that no refund will be issued if you chose SIM delivery (Drop into mailbox / Deliver to doorstep), as the order has already been processed.
14. [Roaming] Roaming calls and SMS are chargeable. To view the rates and other T&Cs, read here
15. [IDD] Calling from Singapore to other countries must have a valid IDD plan to do so. For more info, refer here
16. [FUP] Due to a recent increase in SMS-based scams, all of the aforementioned plans have a daily SMS limit of 300, as per our fair usage policy.
17. [Blacklist] ZYM Mobile reserves the right to refuse service to customers who engage in excessive porting in and out activity.
18. [Blacklist] ZYM Mobile may refuse service to customers with previous outstanding balances. To be eligible for service, customers must settle any outstanding amounts in full before reapplying.
19. [Blacklist] ZYM Mobile reserves the right to refuse service to customers whose behavior is deemed harmful, or who are suspected of engaging in fraudulent or illegal activities.
20. Effective 29 Aug 2024, Lite 4G, Prime 4G, Mega 5G and Super 5G SIM-only plans will be removed and no new sign-ups will be accepted, but existing customers on these plans will not be affected.
21. [SIM Order] If the customer provides incorrect personal or delivery information, they are responsible to reorder the SIM card again through the ZYM website (www.zym.sg). Refunds (if any) will not be issued for previous orders due to the order being already processed.
22. (SIM Order) Please activate your SIM card within 14 days from date of order if you've opted for delivery to your mailbox or doorstep. After 14 days, the SIM card will expire and become unusable. However, if you opted for self-collection of SIM card, you must collect your SIM card within 14 days of ordering it. If you do not collect it by the deadline, ZYM Mobile will automatically cancel your order.
23. (Device compatibility on VoLTE) Non-local handsets, even with VoLTE enabled, may not work with local VoLTE due to LTE band incompatibility, missing carrier software, lack of roaming agreements, absence of local certification, or other network restrictions. ZYM strongly advises purchasing or using imported handsets and is not liable for any issues arising from non-local devices.
24. [From 12 Dec 2024 until stock lasts] New subscribers who activate any ZYM mobile plan will receive a $90 selected Samsung Tab eVoucher & $50 selected accessories eVoucher for Samsung watches & buds at 3 Samsung Experience Stores: Westgate, Plaza Singapura, Bedok or VivoCity. New subscribers will also receive a $70 eVouchers for Apple AirPod Pro Gen 2 (USB-C) for selected 5 Singtel Exclusive Stores at Junction 8, ION, Harbour Front, Hougang Mall, Compass One and HQ Ubi. Each eVoucher can be used for 1 item at a time and can be combined with other prevailing promotions at these stores only. For more detailed T&Cs, refer here
25. [Promotion] *Between 19 Nov 2024 - 15 June 2025, all new subscribers who order a simcard with any ZYM mobile plan and have entered valid promo/referral code JACKPOT in www.zym.sg, will get 1x chance to win 2 return tickets to Taiwan with Singapore Airlines, worth $2,000, after you have successfully activate the SIM card! A total of 1 winner shall be selected. Winners will be announced on ZYM Facebook a week after the end of campaign, and contacted via email, WhatsApp, or SMS for collection.
26. [Promotion] *Between 01 Dec - 15 Jun 2025, all new subscribers who order a simcard with any ZYM mobile plan and have entered valid promo/referral code in www.zym.sg, will get an additional chance to win 2 return tickets to Taiwan with Singapore Airlines, worth $2,000, after you have successfully activate the SIM card! A total of 1 winner shall be selected. Winners will be announced on ZYM Facebook a week after the end of campaign, and contacted via email, WhatsApp, or SMS for collection.For more detailed T&Cs, refer here. Occasionally, we partner with businesses to offer special promo codes with unique prizes. These promotions will be unannounced.
27. [Promotion] Starting 10 Jan 2025, customers who activate any ZYM Mobile plan in Samsung Experience Stores: Westgate, Plaza Singapura, VivoCity, Bedok or 5 Singtel Exclusive Stores at Junction 8, ION, Harbour Front, Hougang Mall, Compass One and HQ Ubi would be given a 3GB SIM card for Free, while stock lasts. For more info, refer here
28. [Promotion] From 30 April - 30 June 2025, customers who port in from a non-singtel network operator to our Roam Plus or Smart plan gets free subscription on their 4th, 5th and 6th month stay with us. For more info, refer here
29. [Promotion] From 30 April - 30 June 2025, customers who port in from a non-singtel network operator to our Roam Eco (5G) or Smart Power (5G) gets $10.10 and $15.10 monthly rebate on their 4th, 5th and 6th month stay with us. For more info, refer here
30. [Plan Upgrade] If subscribers are currently subscribed to the Roam Plus, Smart, Eco (5G), or Power (5G) plan, their plan will be automatically upgraded to the new plan details as shown on the ZYM Mobile website: www.zym.sg. This upgrade will provide subscribers with more local data and roaming data. Please note that this upgrade will be implemented progressively for all existing subscribers and is expected to be completed by 15 May 2025. We kindly ask for subscribers' patience during this transition.