If you've received an email or SMS invitation from us, please walk-in to one of our designated store locations listed below to swap your existing 4G SIM card for a 5G-ready SIM. (No appointment needed)

✅ ZYM HQ - 53 Ubi Crescent, Singapore 408594
✅ Samsung Experience Store - J.E.M, Vivocity, Plaza Singapura, Bedok Mall or Serangoon Nex
✅ Singtel Exclusive Store - Junction 8, Compass One, Orchard ION or Harbourfront

Samsung Experience Stores and Singtel Exclusive retailers are open daily from 11am to 7pm. Please note that ZYM HQ operates on a different schedule: Monday to Friday, 10am to 6pm.

Note: For security purposes, please visit a store in person and present your physical ID or use Singpass for identity verification.

Effective February 12, 2026, ZYM Mobile has officially launched its 5G+ (Standalone) connectivity for all our 5G plans.

It depends.

For users currently on a 5G plan but still using a 4G SIM card
✅ We are sending invitations via email or SMS starting 12 Feb 2026. These messages will guide you on where to replace your older 4G SIM card with a new 5G-Ready SIM for free.

For users currently on a 5G plan and are already using a 5G SIM card
✅ No SIM swap is required on your part! Your network will automatically upgrade to 5G+ in stages, with all updates expected to be complete by 7 March 2026.

Because it’s hard to tell a 4G and 5G SIM apart just by looking at them, that is why we’re notifying you via email or SMS that if you're required to make the SIM replacement.

Users who do not receive a notification are unaffected. This is because you either already possess a 5G-ready SIM card or your specific subscription plan does not necessitate an change of SIM card.

Previously, 5G services operated on a "Non-Standalone" (NSA) basis, utilizing the existing 4G core for control. In contrast, 5G SA (Standalone) is a complete departure from 4G, powered by a dedicated 5G Core (5GC). Often referred to as "True 5G," this independent infrastructure is what finally unlocks the technology’s full potential.

Our 5G+ network utilizes the 700 MHz spectrum. This low-band frequency is a game-changer for signal penetration, offering up to a 40% boost in signal strength within high-rise buildings, remote areas, and underground locations like MRT tunnels.

Note: While our 5G+ (SA) network is officially live, we are currently performing final optimizations. You may still be seeing 5G NSA connectivity in underground areas during this transition phase. We appreciate your patience as we finalize these upgrades.

The good news? You can swap to a 5G SIM for free before 31 March 2026, even if you are currently on a 4G plan, or you have no intention to upgrade to 5G.

Here's a breakdown of what you can generally expect:

✅ 5G (Non-Standalone)
- Typical Download 100 Mbps – 500 Mbps
- Theoretical Peak ~1 Gbps
- Upload Speed 30 – 50 Mbps
- Latency (Ping) 30 – 60 ms

✅ 5G+ (Standalone)
- Typical Download 300 Mbps – 700 Mbps+
- Theoretical Peak >1.1 Gbps
- Upload Speed 40 – 90 Mbps (Up to 30% faster)
- Latency (Ping) 15 – 30 ms (Twice as responsive)

Yes, upgrading to a true 5G SIM card is required to fully access and benefit from 5G+ in Singapore.

While your current 5G SIM works with the initial 5G Non-Standalone (NSA) network (which is still anchored to the 4G core), the new 5G+ is built on the advanced 5G Standalone (SA) architecture with a completely new, dedicated core network.

⭐ Yes, you absolutely must use a 5G device with the True 5G SIM to access the high speeds and low latency of the 5G+ network.

🛜 It depends. Most 5G-compatible devices will continue to display "5G," but a small number of devices will show the "5G+" network indicator.

⭐ For Android - Using an app like NetMonster may confirm that you're on 5G+ (5G SA) or 5G (NSA) network.
⭐ For iOS - On your device, dial *3001#12345#*

🛜 If you are currently on a 5G plan, please note that you MUST exchange your SIM card for a true 5G SIM to maintain 5G network access.

This is due to an IMDA REGULATION that requires the older 5G Non-Standalone (NSA) network to be ceased islandwide by Q1 2026.

What this means for you:

✅ If you are on a 5G plan, your current SIM card is only compatible with the retiring NSA network. To connect to the permanent, advanced 5G+ (Standalone) network, you need the new 5G SIM, which holds the necessary credentials. Failure to upgrade the SIM will result in a fall-back to 4G service.

✅ If you are on a 4G plan, no immediate action is needed, and you will continue to enjoy 4G service. However, if you decide to upgrade to 5G+ one day, you will then be required to switch to the new 5G SIM.

✅ Yes. Singapore's 5G network rollout is among the most advanced globally. The Infocomm Media Development Authority (IMDA) has driven operators to achieve widespread 5G Standalone (SA) coverage. We had achieved over 95% nationwide 5G SA coverage ahead of the regulatory target.

However, as we are in the transition, you may expect to continue to see 5G NSA connectivity if you are under MRT Tunnel or underground places.

🛜 Network slicing is a key feature of 5G SA. It allows the network to be logically divided into dedicated "slices" tailored for specific needs.

Though such features are not enabled in ZYM yet.

The short answer is YES.

Coverage Targets: IMDA set regulatory targets for the two initial nationwide 5G SA networks to achieve 95% outdoor coverage by the end of Q1 2026 (for Singtel). That includes all Singtel MVNO, such as ZYM Mobile.