ZYM Mobile review 2026: Singtel speed with massive roaming perks

Nathan Lawrence

Last updated 27 May 2026

Contents

In this guide:

ZYM Mobile SIM-only plans
How to sign up for a ZYM Mobile plan
ZYM Mobile plan add-ons
ZYM Mobile data roaming
ZYM Mobile customer service
ZYM Mobile FAQ

ZYM Mobile has been around since 2021 and runs on the Singtel network. Their main offerings include SIM-only mobile plans with affordable prices and generous roaming inclusions. But are they any good? Let's find out.

Pros

Affordable plans
Reliable network
Included roaming data up to 1,000GB

Cons

Customer service could use improvement

ZYM Mobile SIM-only plans

ZYM Mobile SIM-only plans are all no-contract monthly offerings, which have several free inclusions: number port-in, caller ID, incoming calls and incoming SMS. All plans cost $3 upfront for SIM delivery or $2 for eSIM.

ZYM offers both 4G and 5G plans, with the former being the cheapest. Let's start with a look at the 4G ZYM Mobile plans.

ZYM Mobile 4G plans

Flexi Duo Data Only

77GB data
on Singtel network
No Calls Included
International Roaming
Deal: Free eVoucher worth $190

$7.00

+ $3 Upfront

Min. cost $10

Link not supplied

$7.00

+ $3 Upfront

Min. cost $10

Link not supplied

Roam Saver 4G

200GB data
on Singtel network
300 Minutes
100 Messages
International Roaming
Deal: Get your 3rd month free when you port-in + Free eVoucher worth $190

$7.77

+ $3 Upfront

Min. cost $10.77

Link not supplied

$7.77

+ $3 Upfront

Min. cost $10.77

Link not supplied

Roam Plus 4G

500GB data
on Singtel network
1000 Minutes
100 Messages
International Roaming
Deal: $0 bill during 3rd month for new numbers + Free eVoucher worth $190

$10.10

+ $3 Upfront

Min. cost $13.10

Link not supplied

$10.10

+ $3 Upfront

Min. cost $13.10

Link not supplied

The cheapest SIM-only option is the ZYM Mobile Flexi Duo Data Only Plan, which costs $7 per month for 77GB of data, which can be used in Singapore and Malaysia. There aren’t any calls or SMS with this plan, but it does include 100GB of roaming data for Malaysia (90-day expiry). This is one of the cheapest SIM plans on the market, but it's important to note that it does not include calls or SMS.

The cheapest ZYM Mobile plan that includes 300 call minutes and 100 SMS is the $7.70 per month Roam Saver plan. It comes with 200GB of local data per month plus 100GB of data per year to use in Malaysia, plus 5GB of roaming data per month for use in Malaysia, Indonesia, Thailand, Taiwan, the Philippines, and India. This plan also includes 100 IDD minutes for 16 destinations.

The Roam Plus plan is ZYM's final 4G plan. It costs $10.10 per month for 500GB of local data, 1,000 outgoing local call minutes and 100 local SMS. This plan also includes 600GB per year of roaming data for use in Malaysia, Indonesia, and Thailand, 15GB per year for 198 worldwide destinations, plus an additional 15GB of roaming data per month for 13 Asia-Pacific destinations. There's also 300 IDD minutes to 16 destinations, and 180 days of free 5G+ connectivity.

Now, let's move on to ZYM Mobile's 5G plans.

ZYM Mobile 5G plans

Roam Smart 5G+

600GB data
on Singtel's 5G network
2000 Minutes
100 Messages
International Roaming
Deal: $0 bill during 4th to 6th mth (new & port-in) + Free eVoucher worth $190

$15.10

+ $3 Upfront

Min. cost $18.10

Link not supplied

$15.10

+ $3 Upfront

Min. cost $18.10

Link not supplied

ZYM Mobile has downsized its 5G plans to just one offering: the Roam Smart SIM Only plan, which costs $15.10 per month. For your money, you get 600GB local 5G data, 1,000GB per year roaming data for use in Malaysia, Indonesia, and Thailand, 50GB per year global roaming data for 198 destinations, and 20GB monthly roaming data for 13 APAC destinations. You'll also stay connected with 2,000 local minutes, 100 local SMS, and 500 IDD minutes to 16 destinations.

Also consider:

#1	SIMBA Editor's Pick	SIMBA Editor's Pick SuperRoam 10 SIM Only 500GB data SIMBA mobile digital network (5G) Unlimited National Calls & SMS International Roaming $10.00 Min. cost $10 Go	$10.00 Min. cost $10	Go
#2	Zero1	Zero1 Starter Prime 4G 200GB data on Singtel's 4G network 300 Minutes 100 Messages International Roaming Deal: Roam Malaysia 100GB for 365 days $7.06 Min. cost $7.06 Go	$7.06 Min. cost $7.06	Go
#3	Singtel Editor's Pick	Singtel Editor's Pick $12 hi! 4G Monthly Plan 500GB data Singtel 4G network Unlimited National Calls & SMS International Roaming Deal: Port-in Offer: Pay $10/30 days (U.P. $12) for 12 months $12.00 Per 30 Day Renewal Go	$12.00 Per 30 Day Renewal	Go
#4	MyRepublic	MyRepublic 4G Flex 150GB data on M1 4G network 100 Minutes 50 Messages International Roaming Deal: For new number & Non-M1port-in sign-ups $6.00/mth Min. cost $6 Go	$6.00/mth Min. cost $6	Go
#5	Maxx	Maxx 290GB SIM Only 290GB data on M1 network 500 Minutes 99 Messages International Roaming Deal: Online Exclusive: $7.90 promotional price (usually $9.90) for the first 12 cycles for new sign-ups and number port-ins $7.90 Min. cost $7.90 Go	$7.90 Min. cost $7.90	Go
#6	CMLink	CMLink 200GB 4G SIM Only 200GB data on Singtel's 4G network 300 Minutes 100 Messages International Roaming Deal: Get 1 month free credit rebate for port-in + Free 100GB Malaysia roaming for 365 days for new sign-ups only $7.70 Min. cost $7.70 Link not supplied	$7.70 Min. cost $7.70	Link not supplied

How does ZYM Mobile's yearly roaming work?

It might seem quite confusing at first to see ZYM Mobile plans offering both monthly and yearly roaming data. So, how does it work?

Each plan offers a monthly allotment of data that can be used in Singapore, of course. They also offer a monthly allotment of data for use in selected APAC destinations.

In addition to these monthly allotments, which refresh at the end of every month, ZYM also offers some roaming inclusions that only refresh after a year. So, if your plan comes with 600GB yearly roaming data for a particular destination, you have to make that data last for the whole year before it resets.

Here’s how to sign up for a ZYM Mobile SIM-only plan:

Find the right ZYM Mobile plan for you below, then click on the ‘Go to Site’ button.

#1	ZYM Mobile	ZYM Mobile Flexi Duo Data Only 77GB data on Singtel network No Calls Included International Roaming Deal: Free eVoucher worth $190 $7.00 + $3 Upfront Min. cost $10 Link not supplied	$7.00 + $3 Upfront Min. cost $10	Link not supplied
#2	ZYM Mobile	ZYM Mobile Roam Saver 4G 200GB data on Singtel network 300 Minutes 100 Messages International Roaming Deal: Get your 3rd month free when you port-in + Free eVoucher worth $190 $7.77 + $3 Upfront Min. cost $10.77 Link not supplied	$7.77 + $3 Upfront Min. cost $10.77	Link not supplied
#3	ZYM Mobile	ZYM Mobile Roam Plus 4G 500GB data on Singtel network 1000 Minutes 100 Messages International Roaming Deal: $0 bill during 3rd month for new numbers + Free eVoucher worth $190 $10.10 + $3 Upfront Min. cost $13.10 Link not supplied	$10.10 + $3 Upfront Min. cost $13.10	Link not supplied
#4	ZYM Mobile	ZYM Mobile Roam Smart 5G+ 600GB data on Singtel's 5G network 2000 Minutes 100 Messages International Roaming Deal: $0 bill during 4th to 6th mth (new & port-in) + Free eVoucher worth $190 $15.10 + $3 Upfront Min. cost $18.10 Link not supplied	$15.10 + $3 Upfront Min. cost $18.10	Link not supplied

On the ZYM Mobile website, use the ‘Get SIM’ button to confirm plan selection.
Check the plan inclusions, then hit the ‘Next’ button.
Enter your name, NRIC number, email address, contact number and date of birth. Select how you’d like to receive your ZYM Mobile SIM card, then click ‘Next’.
Follow the rest of the prompts to complete sign-up.

ZYM Mobile plan add-ons

Unlike other telcos, ZYM Mobile doesn’t have a lot of plan add-ons. But it does have a few for those after international direct dial (IDD) add-ons:

Call Popular Destination V019 (one-month validity): $30 for 30 call minutes to Australia, Bangladesh, Brunei, Canada, China, Hong Kong, India, Indonesia, Malaysia, New Zealand, Philippines, South Korea, Taiwan, Thailand, United States of America, and Vietnam.
Call Rest of the World (one-month validity): $10 for 30 call minutes to 34 destinations: Australia, Austria, Bangladesh, Brunei, Cambodia, Canada, China, Denmark, France, Germany, Greece, Hong Kong, India, Indonesia, Ireland, Japan, Malaysia, Myanmar, Netherlands, New Zealand, Norway, Pakistan, Philippines, Saudi Arabia, South Korea, Spain, Sri Lanka, Sweden, Taiwan, Thailand, United Arab Emirates, United Kingdom, United States of America, and Vietnam.

ZYM Mobile data roaming

All ZYM Mobile plans include roaming data for Malaysia, and most include roaming data for additional Asia-Pacific destinations.

However, for those who need more data or are travelling beyond the APAC region, ZYM Mobile also offers several data roaming add-ons for its SIM-only plans:

Malaysia (seven-day expiry): $5 for 3GB.
Malaysia (30-day expiry): $6.50 for 8GB.
Malaysia (30-day expiry): $16 for 30GB.
Thailand (seven-day expiry): $5 for 3GB.
Indonesia (seven-day expiry): $5 for 3GB.
Asia 9 (30-day expiry): $12 for 4GB for use in nine destinations: Australia, Brunei, Cambodia, Indonesia, Laos, Malaysia, New Zealand, Philippines, Thailand.
Asia 24 (30-day expiry): $15 for 6GB for use in Australia, Bangladesh, Bhutan, Brunei, Cambodia, China, Hong Kong, India, Indonesia, Japan, Laos, Macau, Malaysia, Myanmar, Nepal, New Zealand, Pakistan, Philippines, South Korea, Sri Lanka, Taiwan, Thailand, Timor-Leste, and Vietnam.
Travel Global 198 (30-day expiry): $30 for 6GB for use in 198 destinations - see ZYM's website for the full list.

ZYM Mobile customer service

ZYM Mobile's customer service options are quite limited. You can contact their customer care team on WhatsApp, or you can visit any of their six in-person customer service centres.

ZYM Mobile has a Seedly score of 4.8/5. Its highest score sits in the network category, where they're praised for reliable 5G and roaming connectivity. The telco has also been praised for its ease of setup and affordable price.

However, despite such a high score, there were a few complaints about ZYM's customer service. Most stated that responses on WhatsApp can be delayed, and in some instances, it took several days for a customer service representative to reply to messages.

ZYM Mobile FAQ

What network does ZYM Mobile use?

ZYM Mobile uses the Singtel 4G and 5G networks for its SIM-only plans.

Is ZYM Mobile good?

ZYM Mobile is good for people who want a reasonably priced SIM-only plan on the Singtel network with plenty of data and some generous data roaming inclusions.

How do I activate roaming for my ZYM Mobile service?

Use the ZYM Mobile app to activate roaming.

ZYM vs. SIMBA: Which is better?

SIMBA is a network owner that offers cheap mobile plans for its customers, but you may be able to find cheaper plans with ZYM Mobile, which should also have roaming data and operate on the highly-regarded Singtel network.

Nathan Lawrence

Nathan Lawrence is a freelancer writer with over 11 years of experience. He has contributed to publications including WhistleOut Australia, Review.org/au, IGN, STACK, Fandom, Red Bull, and AusGamers. Nathan specialises in researching, writing, and editing content around technology, telecommunications, and gaming.

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