Top 15 FAQs About CIS SIM-Only & Phone Plans in Singapore

CIS plans, also known as Corporate Individual Scheme plans, are one of the best-kept secrets for saving on mobile bills in Singapore. Offered through partner companies, CIS sim only plans give employees and eligible individuals access to exclusive SIM-Only and phone plans with better value than standard consumer plans.

If you’re wondering how CIS plans work, who is eligible, or whether they’re worth switching to, this guide answers the top 15 most frequently asked questions about CIS SIM-Only and phone plans in Singapore.

What is a CIS plan?

A CIS plan is a mobile plan offered under a Corporate Individual Scheme. It provides exclusive pricing and benefits to employees of participating companies, even though the plan is used for personal use.

CIS plans often come with:

• Lower monthly prices

• Higher data allowances

• Extra roaming or lifestyle perks

• No long-term contracts

What is a CIS SIM-Only plan?

A CIS SIM-Only plan gives you mobile services without bundling a phone. You pay only for:

• Data

• Calls

• SMS

• Optional roaming or add-ons

CIS SIM-Only plans typically offer significantly more data than standard SIM-Only plans at the same price point.

What is a CIS phone plan?

A CIS phone plan bundles a smartphone together with a CIS mobile plan. You pay monthly for both the device and the plan, usually at a discounted rate compared to non-CIS contracts.

These plans suit users who want:

• A new phone

• Monthly instalments

• CIS-exclusive pricing

Which is the best CIS plan in Singapore?

The best CIS plan depends on your usage needs.

• Heavy data users benefit from high-GB or near-unlimited CIS SIM-Only plans

• Frequent travellers benefit from CIS plans with free roaming data

• Users upgrading phones may prefer CIS phone plans with subsidised devices

There is no single “best” CIS plan for everyone. The best plan is the one that matches your data, roaming, and device needs.

Who is eligible for CIS SIM-Only plans?

Eligibility depends on whether your company participates in the CIS program. Typically, eligible users include:

• Full-time employees

• Contract staff in participating organisations

• Individuals with a verified work email

Some CIS benefits may also be shareable with family and friends.

What are the benefits of CIS plans in Singapore?

Key benefits of CIS plans include:

• Exclusive pricing not available to the public

• High data allowances

• Free roaming data to selected countries

• Unlimited local talktime on many plans

• eSIM availability

• No long-term contracts
  

Do CIS plans include 5G?

Yes. Most modern CIS SIM-Only and phone plans include 5G access, provided:

• Your device supports 5G

• You are within 5G coverage areas

• Your plan includes 5G services

Can I switch to a CIS plan from an existing telco plan?

Yes. You can switch from another telco or a non-CIS plan by:

• Porting your existing number

• Verifying your CIS eligibility

• Selecting your preferred CIS plan

Early termination fees may apply if you’re still under contract with your current provider.

How do I apply for a CIS plan in Singapore?

Applying for a CIS plan is simple:

1. Verify your eligibility using your work email

2. Unlock the CIS offer

3. Choose your CIS SIM-Only or phone plan

4. Complete your order online

5. Activate your SIM or eSIM

Activation usually takes just a few minutes.

What happens if I leave the company offering CIS benefits?

If you leave the company, your CIS plan may:

• Continue at the same price

• Or be converted to a standard consumer plan

This depends on the telco’s CIS policy at the time.

Which telcos offer CIS SIM-Only plans in Singapore?

Several major and digital telcos in Singapore offer CIS SIM-Only and phone plans through corporate partnerships. Availability varies depending on employer participation.

Are CIS plans available without a device contract?

Yes. Many CIS plans are SIM-Only and contract-free, allowing you to cancel or switch anytime without penalties.

Can I keep my existing phone number when switching to CIS?

Yes. Number porting allows you to keep your current mobile number when switching to a CIS plan.

Do CIS plans support eSIM activation?

Yes. Most CIS SIM-Only plans support eSIM activation, allowing you to:

• Activate digitally

• Avoid physical SIM swaps

• Use dual SIM on supported devices

Is there a contract period for CIS SIM-Only plans?

Most CIS SIM-Only plans are no-contract. This gives you flexibility to cancel, upgrade, or switch plans anytime.

Final thoughts

CIS SIM-Only and phone plans offer excellent value for eligible users in Singapore. With lower prices, higher data allowances, 5G access, and flexible terms, CIS plans are a smart option if your company participates in the program.

If you qualify, switching to a CIS plan can significantly reduce your monthly mobile bill without sacrificing features or performance.