Is eSIM Safe? Debunking Myths About Mobile Security

An eSIM, or embedded SIM, is a digital SIM card that’s built directly into your phone or device. Unlike traditional physical SIMs that need to be inserted, removed, or replaced, eSIMs are activated digitally through your mobile provider’s app or website.

This technology is becoming increasingly common in Singapore, with support from major telcos and smartphone brands. More users are now switching to eSIM for convenience, instant activation, and the ability to switch plans without needing a physical card.

But with this shift comes new questions, especially around eSIM security. Can a digital SIM be hacked more easily? Is it safe to delete or transfer your eSIM profile? And what happens if your phone is lost?

In this guide, we break down the most common myths about eSIMs, explain how they really work, and show how you can protect your digital SIM just like any other important piece of tech.

Is eSIM Safe? Common Myths vs. Reality

As eSIM adoption grows, so do the misconceptions. Here are the top myths users often believe along with the real facts behind each one.

Myth 1: eSIMs Can Be Hacked More Easily

Myth Explanation:

Because eSIMs are digital, some believe they are more vulnerable to hacking than physical SIM cards.

Reality:

eSIMs use strong encryption and are stored in a secure part of your device, similar to mobile payment credentials. When managed through a trusted telco’s official app or portal, eSIMs are no more vulnerable than traditional SIMs. In fact, physical SIMs can be stolen and misused more easily in some cases.

Myth 2: eSIMs Make SIM Swap Scams More Likely

Myth Explanation:

Some users think that because eSIMs are managed online, fraudsters can more easily swap them without permission.

Reality:

SIM swap scams can affect both physical and eSIM users. The risk comes from weak passwords or poor account security, not from the SIM type. Using strong authentication like 2FA and app-based controls helps protect your eSIM from unauthorized changes.

Myth 3: Anyone Can Delete an eSIM Profile

Myth Explanation:

Since eSIMs are stored in your phone settings, people worry that they can be deleted easily by accident or by someone else.

Reality:

Deleting an eSIM requires device access and authentication. Most phones will also ask for confirmation or a PIN before allowing deletion. As long as your phone is locked with a secure PIN or biometric ID, your eSIM profile cannot be removed by others.

Myth 4: Once You Go eSIM, You Can’t Switch Phones Easily

Myth Explanation:

Some think using an eSIM locks you into a single device and prevents easy switching.

Reality:

Switching phones with an eSIM is simple. You can re-download your eSIM profile on a new device using the telco’s app or a QR code. In most cases, the transfer takes just a few minutes, with no physical SIM required.

Myth 5: eSIMs Leak More of Your Personal Data

Myth Explanation:

Because eSIMs are cloud-based, users fear their personal information may be more exposed.

Reality:

eSIM data is stored securely and is not openly shared across apps or cloud services. Just like with physical SIMs, your personal data is protected by your telco’s privacy standards and your phone’s internal security systems.

How to Detect an eSIM Hack

While rare, eSIM-related fraud can happen if someone gains access to your device or telco account. Knowing the warning signs can help you act quickly before serious damage occurs.

Look out for these red flags:

• Unexpected SIM deactivation

  If your eSIM stops working and you lose network access without explanation, it may indicate someone has tried to transfer or delete your eSIM profile.

• No signal or network access

  A sudden loss of service, especially if you weren’t in a no-coverage area, can point to unauthorized tampering or account changes.

• Unusual activity on mobile apps

  If banking, social media, or other personal apps show login attempts you didn’t initiate, your mobile number may have been compromised.

• Receiving OTPs or 2FA codes you didn’t request

  Unsolicited verification codes are often a sign that someone is trying to reset passwords or gain access to your accounts using your number.

• Calls or messages from unknown services

  Watch for texts or calls you didn’t sign up for. They could be phishing attempts linked to a stolen or misused eSIM profile.

What to Do If You Suspect SIM Fraud

If you think your eSIM has been tampered with or used in a scam, take these immediate steps to protect your accounts and data:

• Contact your telco immediately

  Reach out to your provider (Circles.Life, Singtel, StarHub, or M1) to report the issue. Ask them to lock or deactivate your eSIM profile and investigate any suspicious activity.

• Check your mobile apps for suspicious logins

  Review your recent login history on sensitive apps like banking, email, and social media. Change your passwords and enable two-factor authentication if you haven’t already.

• Temporarily disable mobile service or lock the eSIM profile

  If your phone allows it, disable your eSIM through settings until the issue is resolved. This prevents further misuse of your mobile identity.

• File a report with the police or cybercrime hotline in Singapore

  You can report digital fraud to the Singapore Police Force or via the ScamShield website for additional support and documentation.

• Strengthen device security

  Use biometric locks and strong PINs for your phone and essential apps. This reduces the chance of unauthorized access even if your device is physically lost or compromised.

Best Practices to Secure Your eSIM Profile

Keeping your eSIM safe doesn’t require complicated tools.  A few smart habits can go a long way in protecting your digital identity. Here are simple ways to improve your eSIM security:

• Use a strong phone lock

  Set a secure PIN or password, and enable biometric features like fingerprint or face unlock. This prevents unauthorized access to your device and its eSIM settings.

• Enable two-factor authentication (2FA)

  For apps like WhatsApp, Gmail, banking, and telco accounts, activate 2FA to add a layer of security. Even if someone gains access to your number, they won’t be able to log in without your second factor.

• Avoid scanning random QR codes for eSIM activation

  Only use QR codes or activation links provided by your telco’s official app or website. Fake QR codes can lead to account takeover or eSIM profile theft.

• Download eSIM profiles from trusted sources

  Never activate your eSIM using third-party platforms or unofficial portals. Always go through your telco’s verified app or customer dashboard.

• Avoid using public Wi-Fi during setup

  When activating or managing your eSIM, avoid unsecured Wi-Fi networks. Use your mobile data or a secure home network instead to reduce the risk of interception.

Best eSIM Providers in Singapore (2025)

As more users make the switch to digital SIM cards, several telcos in Singapore have stepped up with strong eSIM offerings. Here are the top providers to consider based on ease of activation, plan flexibility, and support for travel or local use:

• Circles.LifeInstant eSIM activation, fully app-based, no contract, and travel-ready with roaming features and CirclesAI access.

• Singtel

  Offers both prepaid and postpaid eSIM options with wide compatibility and bundled plans for data, calls, and roaming.

• M1

  Good for users who travel frequently. Supports roaming and allows add-ons for data while abroad.

• StarHub

  Includes eSIM support across various plans with family-sharing options, entertainment bundles, and international coverage.

• MyRepublic

  Simplified eSIM setup process geared toward new users, with no-fuss activation and decent plan variety.

• Gomo

  Digital-first MVNOs with budget pricing, full eSIM onboarding, and minimal setup steps for tech-savvy users.

eSIM Plans Comparison – Top Telcos in Singapore

Here’s a side-by-side look at popular eSIM plans offered by leading telcos in Singapore. This comparison highlights monthly pricing, data allowance, and any included perks to help you choose the best option based on your needs.

Last updated on:  June 2025

Circles.Life stands out for offering the most data at the lowest price, with 5G options, app-based activation, and zero hidden fees. Other telcos may appeal to users looking for traditional bundled services or simpler prepaid options.

Final Thoughts – Is eSIM the Future of Secure Connectivity?

eSIM technology is here to stay, and for good reason. It offers a seamless, more secure way to manage your mobile connection without the hassle of physical SIM cards. With proper security practices, eSIMs can be even safer than traditional SIMs.

From avoiding SIM card theft to enabling faster switching between plans and countries, eSIMs are built for the digital world we now live in. As long as users follow basic precautions, like using biometric locks, enabling two-factor authentication, and only activating eSIMs through official apps, there’s no reason to worry.

If you're ready to ditch the plastic and switch to something smarter, now’s a great time to make the move.

Download the Circles.Life app to switch, save, and secure your digital SIM instantly.

FAQs

Can an eSIM be cloned like a physical SIM?

No. eSIMs are embedded and encrypted within your device. Unlike physical SIM cards that can be removed and copied, eSIM profiles are protected by your phone's security system, making cloning extremely difficult.

Are all eSIM providers equally secure?

Not necessarily. While most major telcos follow strict security protocols, always activate your eSIM through the provider’s official app or website. Avoid third-party platforms and always confirm the source before scanning QR codes.

Does using eSIM affect my chances of recovering a stolen phone?

No. In fact, using an eSIM may improve security since it cannot be easily removed or swapped. As long as your device has a screen lock and "Find My" tracking features enabled, your chances of recovery remain strong.

Does resetting my phone wipe the eSIM profile too?

It depends on your phone settings. Some devices give you the option to keep or delete eSIM profiles during a reset. If you're planning to reset your phone, check the settings carefully or back up your eSIM activation details.

If my eSIM gets deactivated, can someone else activate it?

Only if they have access to your telco account or QR activation code. This is why it’s important to protect your account with strong passwords and two-factor authentication. If your eSIM is deactivated without your permission, contact your telco immediately.