Editor's Pick: Best SIM-only phone plans June 2025

Contents

In this guide:

Best SIM-only plan: Cheapest
Best SIM-only plan: Everyday use
Best SIM-only plan: Heavy use
Best SIM-only plan: Prepaid
Best SIM-only plan with international calls

Gone are the days when the mobile market was dominated by the three major telcos (Singtel, StarHub, and M1). Over the years, the market has seen a number of mobile virtual network operators (MVNOs) who’ve managed to offer similar inclusions at a very comparable price range.

SIM-only plans are a great choice for the person who’s happy with their current handset or equally willing to buy their next smartphone outright. Compared to big providers, there tend to be more SIM-only plans on offer from MVNOs. And that greater range of plans leads to a great mix of competitive pricing and tight competition on the all-important data front.

Moreover, there are providers that offer capped speeds if you go over your monthly data allocation so no bill shock. Scroll on to check our top picks of the best SIM-only plans this month.

Best SIM-only plan Singapore: Cheapest

Editor's Pick

290GB SIM Only

290GB data
on M1 network
500 Minutes
99 Messages
Deal: $7.90 for the first 12 months, $9.90 thereafter

$7.90

Min. cost $7.90

$7.90

Min. cost $7.90

What we love: Maxx is our top budget SIM pick this month, thanks to their 12-month discounted price promo. For under $8/month, you get 290GB data (Singapore & Malaysia), 10GB APAC roaming, 2GB international roaming, and 500 mins of local talktime—an unbeatable deal!

Also consider the following:

#1	Zero1	Zero1 Starter Prime 4G 200GB data on Singtel's 4G network 300 Minutes 100 Messages Deal: 5G included for 3 months + Roam Malaysia 100GB for 365 days $7.06 Min. cost $7.06 Go	$7.06 Min. cost $7.06	Go
#2	CMLink	CMLink 200GB 4G SIM Only 200GB data on Singtel's 4G network 300 Minutes 100 Messages Deal: Port-in Exclusive: Free 5G trial $7.70 Min. cost $7.70 Go	$7.70 Min. cost $7.70	Go
#3	VIVIFI	VIVIFI Roam Value 4G 200GB data on Singtel's 4G network 300 Minutes 100 Messages Deal: Port In Bonus: Free 5G Trial for 3 months (non-Singtel port in) $7.70 Min. cost $7.70 Go	$7.70 Min. cost $7.70	Go
#4	ZYM Mobile	ZYM Mobile 200GB Roam Saver SIM Only 200GB data on Singtel network 300 Minutes 100 Messages Deal: Get 100GB of bonus Malaysia Roaming Data for 365 days $7.77 + $3 Upfront Min. cost $10.77 Go	$7.77 + $3 Upfront Min. cost $10.77	Go
#5	Maxx Editor's Pick	Maxx Editor's Pick 290GB SIM Only 290GB data on M1 network 500 Minutes 99 Messages Deal: $7.90 for the first 12 months, $9.90 thereafter $7.90 Min. cost $7.90 Go	$7.90 Min. cost $7.90	Go
#6	Eight	Eight Double Eight SIM Only 288GB data on StarHub network 588 Minutes 88 Messages $8 Min. cost $8 Go	$8 Min. cost $8	Go
#7	MyRepublic	MyRepublic 4G Starter 288GB data on M1 4G network 200 Minutes 100 Messages $9.90/mth Min. cost $9.90 Go	$9.90/mth Min. cost $9.90	Go

Also good:MyRepublic and Eight also offer great value plans with generous data and roaming inclusions.

Best SIM-only plan Singapore: Everyday use

Editor's Pick

SuperRoam 10 SIM Only

300GB data
SIMBA mobile digital network (5G)
Unlimited National Calls
30 Messages

$10

Min. cost $10

$10

Min. cost $10

What we love: SIMBA takes the crown this month with an unbeatable deal. Get 300GB of data (for use in Singapore, Malaysia & Hong Kong), 12GB APAC Roaming and 3GB Roaming to 60+ selected countries, 500 IDD minutes, and free caller ID – all at an incredible price.

Also consider the following:

#1	Maxx	Maxx 300GB SIM Only 300GB data on M1 network 500 Minutes 50 Messages $10 Min. cost $10 Go	$10 Min. cost $10	Go
#2	SIMBA Editor's Pick	SIMBA Editor's Pick SuperRoam 10 SIM Only 300GB data SIMBA mobile digital network (5G) Unlimited National Calls 30 Messages $10 Min. cost $10 Go	$10 Min. cost $10	Go
#3	ZYM Mobile	ZYM Mobile 300GB Roam Plus SIM Only 300GB data on Singtel network 1000 Minutes 100 Messages Deal: 3 mths free from 4th-6th ( port-in non-Singtel network) + 600GB of bonus Malaysia, Indonesia & Thailand Roaming Data for 365 days $10.10 + $3 Upfront Min. cost $13.10 Go	$10.10 + $3 Upfront Min. cost $13.10	Go
#4	redONE	redONE Best 10 250GB data on StarHub 4G network 500 Minutes 200 Messages $10.90 Min. cost $10.90 Go	$10.90 Min. cost $10.90	Go
#5	Eight	Eight Fortune Eight SIM Only 488GB data on StarHub network 688 Minutes 128 Messages $11.80 Min. cost $11.80 Go	$11.80 Min. cost $11.80	Go
#6	Changi Mobile	Changi Mobile 280GB FlexiChoice SIM Only 280GB data on M1 network 500 Minutes 100 Messages $12 + $5 Upfront Min. cost $17 Go	$12 + $5 Upfront Min. cost $17	Go
#7	Circles.Life	Circles.Life 4G Special 350GB data on M1 4G network Unlimited National Calls 25 Messages Deal: Get 350GB for just $12.80/month for the first 3 months, reverts to 150GB for $15 forever after $15 + $0.30 Upfront Min. cost $13.19 Go	$15 + $0.30 Upfront Min. cost $13.19	Go
#8	GOMO	GOMO 4G Plus SIM Only 300GB data on Singtel's 4G network 500 Minutes 500 Messages Deal: Use code 4GBONUSUP $15 + $2 Upfront Min. cost $17 Go	$15 + $2 Upfront Min. cost $17	Go
#9	MyRepublic	MyRepublic 5G Standard 350GB data M1 5G network 800 Minutes 800 Messages $15.95/mth Min. cost $15.95 Go	$15.95/mth Min. cost $15.95	Go
#10	Giga	Giga 300GB 5G SIM Only 300GB data on StarHub 5G network 800 Minutes 800 Messages Deal: Refer & Earn $6 gigaBucks (3X More!): enjoy $6 off your 1st month using your friend's referral code $18.33 + $2.04 Upfront Min. cost $20.37 Go	$18.33 + $2.04 Upfront Min. cost $20.37	Go

Also good: Eight and ZYM Mobile also offer great value SIM plans.

Best SIM-only plan Singapore: Heavy use

Editor's Pick

SuperRoam 12 SIM Only

500GB data
SIMBA mobile digital network (5G)
Unlimited National Calls
100 Messages

$12

Min. cost $12

$12

Min. cost $12

What we love: SIMBA takes the win this month with an unbeatable deal. Get 500GB of data (for use in Singapore, Indonesia, Malaysia & Hong Kong), free 18GB data roaming to APAC and 7GB data roaming to 60+ countries, 600 IDD and SG bundle minutes, and free caller ID – all at an incredible price. Don’t miss out on this fantastic offer.

Also consider the following:

#1	SIMBA Editor's Pick	SIMBA Editor's Pick SuperRoam 12 SIM Only 500GB data SIMBA mobile digital network (5G) Unlimited National Calls 100 Messages $12 Min. cost $12 Go	$12 Min. cost $12	Go
#2	M1	M1 5G SIM Only 300GB 1024GB data M1 5G network 1000 Minutes 1000 Messages Deal: Bonus 724GB is for local data usage + $3 off first 3 months for new sign-ups and port-ins only $17.95 Min. cost $14.95 Go	$17.95 Min. cost $14.95	Go
#3	MyRepublic	MyRepublic 5G Ultimate 550GB data M1 5G network 1200 Minutes 1200 Messages $17.95/mth Min. cost $17.95 Go	$17.95/mth Min. cost $17.95	Go
#4	redONE	redONE Best 20 500GB data on StarHub 4G network 1000 Minutes 500 Messages $20.90 Min. cost $20.90 Go	$20.90 Min. cost $20.90	Go
#5	Circles.Life	Circles.Life 5G Plus 650GB data on M1 5G network Unlimited National Calls 25 Messages Deal: Get 650GB for just $18/month for the first 3 months, reverts to 500GB for $22 forever after $22 + $0.30 Upfront Min. cost $18.30 Go	$22 + $0.30 Upfront Min. cost $18.30	Go
#6	GOMO	GOMO 5G Jetsetter SIM Only 1000GB data on Singtel's 5G network in selected areas with 5G devices 1000 Minutes 1000 Messages Deal: Bonus 9GB International roaming for 3 months + 800GB monthly Malaysia roaming. Use code JSTRAVEL12 $27.15 + $2 Upfront Min. cost $29.15 Go	$27.15 + $2 Upfront Min. cost $29.15	Go
#7	Giga	Giga 1TB 5G SIM Only 1000GB data on StarHub 5G network 1500 Minutes 1500 Messages Deal: Refer & Earn $6 gigaBucks (3X More!): enjoy $6 off your 1st month using your friend's referral code $28 + $2.04 Upfront Min. cost $30.04 Go	$28 + $2.04 Upfront Min. cost $30.04	Go
#8	Singtel	Singtel 5G+ $35 Ultimate Monthly Plan Unlimited data Singtel 5G network Unlimited National Calls & SMS $35 Per 30 Day Renewal Go	$35 Per 30 Day Renewal	Go

Also good: MyRepublic and Giga also offer SIM plans with huge data.

Best Prepaid SIM plan in Singapore

Editor's Pick

588GB Tourist eSIM

588GB data
on StarHub network
No Calls Included

$18

Per 30 Day Renewal

$18

Per 30 Day Renewal

What we love: Eight is our pick this month for Best Prepaid eSIM Plan with International Calls in Singapore. You will get 588GB data and 12GB APAC Roaming & 6GB International Roaming & 58GB Malaysia Roaming.

Also consider the following:

#1	Eight Editor's Pick	Eight Editor's Pick 588GB Tourist eSIM 588GB data on StarHub network No Calls Included $18 Per 30 Day Renewal Go	$18 Per 30 Day Renewal	Go
#2	Singtel	Singtel $30 5G+ Tourist eSIM Unlimited data Singtel 4G network No Calls Included $30 Per 28 Day Renewal Go	$30 Per 28 Day Renewal	Go
#3	StarHub	StarHub $30 Traveler+ Data eSIM Unlimited data StarHub 4G network No Calls Included $30 Per 28 Day Renewal Go	$30 Per 28 Day Renewal	Go

Also good: You can also checkout Singtel and Starhub.

Best SIM plan with international calls in Singapore

Editor's Pick

SuperRoam 18 SIM Only

500GB data
SIMBA mobile digital network (5G)
Unlimited National Calls
100 Messages
Deal: Free MSIG Personal Accident Insurance with SIMBA Mobile

$18

Min. cost $18

$18

Min. cost $18

What we love: SIMBA SuperRoam 18 is our pick this month for Best Plan with International Calls in Singapore. You will get 500GB data, 400 IDD minutes to 20+ selected countries + 100 mins Myanmar. You will also get 30GB APAC Roaming and 10GB Roaming to 60+ selected countries.

Also consider the following:

#1	Maxx	Maxx 500GB SIM Only 500GB data on M1 network 500 Minutes 50 Messages $12 Min. cost $12 Go	$12 Min. cost $12	Go
#2	Eight	Eight Triple Eight SIM Only 588GB data on StarHub network 888 Minutes 188 Messages $18 Min. cost $18 Go	$18 Min. cost $18	Go
#3	SIMBA Editor's Pick	SIMBA Editor's Pick SuperRoam 18 SIM Only 500GB data SIMBA mobile digital network (5G) Unlimited National Calls 100 Messages Deal: Free MSIG Personal Accident Insurance with SIMBA Mobile $18 Min. cost $18 Go	$18 Min. cost $18	Go
#4	Zero1	Zero1 Jumbo IDD Plus 400GB data on Singtel's 4G network 800 Minutes 100 Messages $20.40 Min. cost $20.40 Go	$20.40 Min. cost $20.40	Go
#5	MyRepublic	MyRepublic 4G Unlimited Unlimited data on M1 4G network 2000 Minutes 2000 Messages $25.90/mth Min. cost $25.90 Go	$25.90/mth Min. cost $25.90	Go
#6	CMLink	CMLink Unlimited 5G SIM Only Unlimited data on Singtel's 4G network 400 Minutes 400 Messages Deal: Free 600GB Malaysia roaming for 365 days. Limited time only. $31.10 Min. cost $31.10 Go	$31.10 Min. cost $31.10	Go
#7	Singtel	Singtel 5G+ $35 Ultimate Monthly Plan Unlimited data Singtel 5G network Unlimited National Calls & SMS $35 Per 30 Day Renewal Go	$35 Per 30 Day Renewal	Go

Also good: You can also checkout Singtel, CMLink, Maxx and Zero1 for international calling.

How we chose the best SIM plans each month

At WhistleOut, we take the job of recommending our monthly winners and runners-up very seriously. That’s why we have a dedicated team that reads over more than 300 plan documents each week to spot hundreds of plan changes in our database every month.

When it comes to the SIM-only plans in our comparison engine, we take a wide array of factors into consideration. For starters, there are the basics. All of our monthly plan winners and runners-up come with the most minutes and text in Singapore, plus we tend to lean towards SIM-only plans with no contracts. We like no-contract plans because it’s easier to switch when a better option comes along.

After the basics, our first key consideration is price, and not just promotional pricing. To help offer a fuller picture of actual costs, we evaluate price in terms of first-year value, which helps separate actual great pricing from a limited-time promotion that may not offer better value in the long run. For promotional pricing to be considered, it has to last at least six months.

The other big consideration with any phone plan is how much data it comes with, and SIM-only plans are no exception. We use included monthly base and bonus data alongside pricing (promotional or regular) to help determine the overall dollars-to-data value which, like the promotional-pricing disclaimer above, can help level out a great data offer from one that only has short-term worth.