Does eSIM drain battery?

No. eSIMs use the same amount of power as physical SIMs. Battery life depends more on signal strength and background apps.

Can an eSIM be hacked?

While no system is entirely immune to cyber threats, eSIMs are more secure than physical SIMs. They're embedded in your device, making them resistant to tampering or SIM-swap fraud.

Is eSIM safe for banking?

Yes. eSIMs are encrypted and can’t be physically removed. Most modern devices add biometric and PIN protection for extra security.

What is the risk of using eSIM?

Risks are minimal. The most common issues are accidental deletion or choosing a provider that doesn’t support your destination. These can usually be resolved by re-downloading the eSIM or contacting support.

Should I get an eSIM or physical SIM?

If your device supports eSIM and you value convenience, affordability, travel flexibility, or fast setup, go with eSIM. If not, a physical SIM works.

Does eSIM give a better signal?

Signal strength depends on the carrier and network, not the SIM type. eSIM and physical SIMs offer the same signal quality.

Does eSIM have network issues?

eSIMs typically offer the same network performance as physical SIMs. Issues are rare and usually linked to carrier support or setup, not the eSIM itself.

What happens if I switch to eSIM?

Your phone number and regular service still work through your physical SIM. The eSIM just adds extra data on top. Most phones support both at the same time.

Which is safer, eSIM or SIM card?

eSIM is safer: it can’t be stolen, swapped, or physically accessed.

Is eSIM better for international travel?

Yes. eSIMs let you instantly activate travel plans, avoid 90% roaming fees, and switch networks without swapping SIM cards.

How do eSIMs work when traveling?

Buy a travel eSIM, scan the QR code (or input details manually), and your device connects to a local network instantly—no shops or SIM swaps needed.

eSIM vs Physical SIM: Which is Better?

For years, physical SIM cards have been the standard for connecting to mobile networks.

However, with the adoption of eSIMs (embedded SIMs), users now have a more flexible and digital alternative.

According to an industry report, between 2 and 3 billion smartphones globally will be using eSIMs by the end of 2025.

Naturally, this has led to a common question: Is an eSIM or a physical SIM better?

Whether you’re new to eSIMs or just curious about how they compare to physical SIM cards, we’ll cover everything you need to know.

Smiling woman using smartphone with eSIM data while traveling; backpack and hat beside her on bench.

In this blog, we’ll dive deep into:

What is an eSIM and a Physical SIM
Similarities between eSIM and SIM
Major differences between eSIM and Physical SIM
Advantages, Common Misconceptions, and Use Cases for eSIMs

We’ll also explore why ConnectedYou’s eSIMs stand out as one of the top eSIM choices for international travel.

Let’s get started.

What is a Physical SIM Card?

Before we explore eSIMs, let’s revisit the familiar traditional SIM card.

A physical SIM card (Subscriber Identity Module) is a small, removable card that you insert into your mobile phone. It helps you connect to a mobile network.

The card chip stores key information, including the International Mobile Subscriber Identity (IMSI) and the Authentication key, which together identify you as a subscriber to your network provider.

Once you add the SIM card, it establishes a connection with your network provider, allowing you to make phone calls, send texts, and browse the internet.

The SIM card has evolved in size from the original credit card-sized SIM to Mini, then Micro, and finally Nano SIMs (what we use today).

What is an eSIM?

An eSIM (embedded SIM) is a digital version of a traditional SIM card that’s built directly into your device.

How does an eSIM Work?

Unlike a physical SIM card, you don’t need to insert anything.

All you have to do is purchase an eSIM plan for your destination, install the eSIM on your device at home, and activate it upon arrival at your new location.

Man on train platform checking smartphone with eSIM for international travel.

Once activated, an eSIM connects your phone to mobile networks, giving you instant access to mobile data, depending on your plan.

It’s especially useful if you’re an international traveler, a dual-SIM user, don’t have a physical SIM slot, or simply want to avoid the hassle of swapping physical SIM cards when switching carriers or plans.

Related: Beginner’s Guide to eSIM

How are eSIM and Physical SIM Similar??

Although eSIMs and physical SIMs come in different forms, they function similarly in several ways. Here’s how they’re alike:

1. Network Connectivity

eSIMs and physical SIMs allow you to connect to a mobile network for data.

2. Store the Same Type of Data

They both store important subscriber information, including your mobile number, authentication keys, and carrier profile.

This is why, once activated, either type of SIM instantly connects to your mobile plan.

3. Device Compatibility

Both physical SIMs and eSIMs are used across many types of devices (smartphones, tablets, smartwatches, laptops, IoT devices).

As long as the device supports that form of SIM, the functionality is essentially the same.

Related: eSIM Compatible Devices

4. Prepaid or Postpaid Plans

Both can be used with prepaid (pay-as-you-go) or postpaid (monthly billing) mobile plans.

5. International Usage

Both SIM types can be used internationally, depending on your mobile plan and device.

But eSIMs make travel easier. You can switch to a local provider instantly, without needing a local physical card.

Plus, eSIM roaming can be up to 90% cheaper than traditional roaming with physical SIMs.

6. They’re Both Core to Mobile Connectivity

Ultimately, both eSIMs and traditional SIMs serve the same core function: enabling mobile communication on your device.

What is the Difference Between eSIM and Physical SIM?

Today’s users now have the choice between traditional physical SIM cards and the newer eSIM.

To help you decide which suits your needs better, the table below highlights the key differences between the two in terms of setup, compatibility, convenience, and more.

Category	eSIM	Physical SIM
Form and Size	Embedded inside the device; no card needed.	Removable Nano SIM card.
Installation and Activation	Activated digitally via QR code, long-press method, or manual activation.	Requires manual insertion and SIM tray handling.
Switching Plans or Carriers	Instant switching between profiles via Settings.	Requires physically swapping SIM cards.
Network Support	Supports 2G–5G, LTE, VoLTE (depending on device and carrier).	Full network access including 2G, 3G, 4G, 5G, LTE, VoLTE, etc.
Replacement	Managed remotely by your eSIM provider.	Must obtain and insert a new physical SIM card manually.
Device Compatibility	Only works on eSIM-compatible devices.	Works on nearly all devices, including older models.
Travel Convenience	Download an international plan in advance and activate it abroad.	Buy and insert a local SIM abroad; risk of high roaming fees.
Local Availability	Growing fast, but still limited in some regions.	Widely available everywhere, even in remote areas.
Security	Embedded and tamper-resistant; can’t be stolen or lost easily.	Can be removed, lost, cloned, or stolen.
Flexibility and Storage	Can store multiple carrier profiles for easy switching.	One carrier profile per SIM card.
Space Utilization	Saves space inside the device for other components.	Requires a physical SIM slot, taking up internal space.
Durability	No possibility for wear and tear.	Can be worn out, damaged, or misplaced.
Dual SIM Functionality	Supports dual eSIM or combo (eSIM + physical SIM).	Limited to one or two physical slots, depending on the device.
Eco-Friendliness	100% digital. No plastic, packaging, or shipping.	Made from plastic, it generates physical waste.
Carrier Support	Supported by a growing number of carriers worldwide.	Supported by all carriers worldwide.
Setup for International Use	Instant setup; download the travel plan at home, and activate abroad.	Manual setup: find a local SIM provider and install it onsite.

Why eSIM Might Be Right for You

Beyond the basic differences, eSIMs offer a range of unique benefits that make them an excellent choice for many users.

Here’s why switching to eSIM could work for you:

1. Easy to Use

No more fiddling with SIM trays or tiny tools. With eSIM, setup is as simple as scanning a QR code, long-pressing the QR code, or manual setup.

You can activate the service in less than 10 minutes, anytime, anywhere. Perfect for anyone who values speed and simplicity.

2. Cost Savings

International roaming with traditional SIMs can cost you $10–$16 per day.

In contrast, eSIM travel plans often start as low as $4.50 (for 2 days) and have varied pricing based on country and data usage.

That’s up to 80–90% savings compared to international roaming with physical SIM cards.

3. Security

Because eSIMs are built directly into your device, they can’t be physically lost, stolen, or swapped.

This makes them a safer option, especially if you lose your phone or become a target for SIM-swap fraud or identity theft.

Hands holding smartphone with shield check icon, representing secure eSIM use for international travel.

4. Flexibility

With eSIMs, switch between mobile plans and providers directly from your phone settings. No need to visit a store or wait for a new SIM card.

This is great for users who want to try new networks, use separate numbers for work and personal life, or find the best data deals fast.

5. Better Travel Experience

With eSIMs, you can connect to local mobile networks as soon as you land, without needing to find a shop or wait in line.

You can even install multiple eSIM profiles in advance and activate them when needed. No roaming bill shock, no downtime.

Uber users can claim a 10% discount on ConnectedYou eSIM plans as part of our partnership deal.

6. Future Proof Design

As more devices adopt eSIM-only designs (like recent iPhones and smartwatches), going digital now means you're ready for the future.

7. Eco-Friendly

eSIMs reduce carbon emissions by nearly 46% compared to physical SIM cards.

eSIMs emit around 123 g CO₂e per device over a 3-year lifecycle, versus 229 g CO₂e for traditional SIMs.

This is primarily because eSIMs eliminate the need for plastic, packaging, shipping, and distribution.

Glass globe on mossy ground symbolizing sustainability and reduced plastic waste with eSIM technology.

Common Misconceptions about eSIMs

eSIMs are often misunderstood due to outdated information or confusion with traditional SIM cards. From security concerns to activation myths, many assumptions aren’t accurate.

Below, we debunk the most common eSIM myths and the truth behind them.

Misconception	Reality
eSIMs only work on expensive phones.	Most newer smartphones (especially mid-range and high-end models released since 2020) support eSIM. iPhones from XS (2018) onward and a wide range of Android models like Google Pixel, Samsung Galaxy S20+, and newer are eSIM-compatible. Complete list of eSIM-compatible Phones.
eSIMs are complicated to activate.	eSIMs are easy to set up. Activation typically involves scanning a QR code, long-pressing a QR code, or entering details manually. It usually takes under 10 minutes; no SIM tray or store visit is needed.
You can’t switch carriers with an eSIM.	You can store and manage multiple eSIM profiles on your device. Switch between carriers directly in your phone settings. Ideal for travel, network testing, or managing multiple lines.
eSIMs can’t be used alongside a physical SIM.	Most eSIM phones are dual-SIM capable (eSIM + physical SIM), allowing two active lines. For example, a travel data line on eSIM and your home number on the physical SIM.
eSIMs aren’t secure.	eSIMs are more secure than physical SIMs. They can't be physically stolen or swapped by attackers. Some phones also encrypt eSIM profiles and require biometric authentication for changes.
eSIMs are only for travelers.	While great for international travel, eSIMs are also ideal for locals looking to switch carriers, try new plans, or manage separate work and personal lines—all without waiting for a new SIM card.
If I delete my eSIM, I lose my number or data.	Your number and service stay with your carrier, not the eSIM itself. If accidentally deleted, the eSIM can usually be reissued or redownloaded from your provider.
eSIMs don’t work without Wi-Fi.	Wi-Fi is usually needed only for initial activation if you don’t have a data plan yet. Once installed, eSIMs work just like regular mobile data plans via 4G/5G.
Prepaid eSIMs are less reliable than roaming or local SIMs.	Reputable providers like ConnectedYou partner with top-tier local networks and offer multi-network fallback. They often give you better coverage and reliability than traditional roaming.
eSIMs have weaker signal reception.	Signal quality depends on your phone and network, not the SIM type. eSIMs deliver the same performance as physical SIM cards.
eSIM is the same as Multi-IMSI	An eSIM is built into your phone and stores your mobile plan. With Multi-IMSI technology, one eSIM can switch between different networks without needing to swap SIMs. That means a single eSIM can change network profiles on the go, depending on where you are or which network has the best signal.

eSIM Use Cases: Real People, Real Travel Needs

Smiling traveler with backpack and smartphone using eSIM outdoors, palm trees in background.

eSIMs are transforming how people stay connected around the world.

Here’s who benefits the most, with real data and practical examples.

1. Frequent International Tourists and Travelers

Whether you're exploring one country or hopping across borders, staying connected is key for navigation, bookings, and safety.

What they need: Affordable data and easy setup across new countries.
eSIM advantage: Skip SIM roaming fees ($10–$16/day) with eSIM plans starting from $4, saving up to 90% roaming costs. Activate eSIM instantly and stay connected across borders.
Example: A traveler uses a ConnectedYou Japan eSIM for just $13, enjoying flexible coverage throughout the country for 10 days.

Travel eSIM users are projected to grow from 40M in 2024 to 215M by 2028, a 440% increase!

2. Digital Nomads and Remote Workers

For location-independent professionals, stable mobile internet is essential across time zones and countries.

What they need: Reliable, affordable data, without depending on public Wi-Fi.
eSIM advantage: eSIMs offer flexible data plans, fast activation, and seamless network switching. Dual SIM lets them keep their main number active while using travel data.
Example: A freelance designer in Lisbon heads to Mexico for 15 days. He installs a ConnectedYou 10 GB Mexico eSIM plan before takeoff, activates it at arrival, and is online within minutes of landing, no roaming, no SIM swap.

50% of remote workers cite finding Wi‑Fi as their #1 challenge when traveling.

3. Business Travelers

Professionals on tight schedules need fast, secure connectivity the moment they land.

What they need: Instant, reliable mobile connectivity for email, video calls, navigation, and secure apps.
eSIM advantage: eSIM plans offer borderless coverage with quick activation. Many include 4G/5G and auto-connect to top local networks.
Example: An employee traveling to France activates a ConnectedYou 20GB France eSIM (30 days), staying connected from the airport to meetings.

Interested in Business travel eSIMs for your employees? Learn more about our Corporate Travel Partner Program today!

4. International Students and Long-Term Expats

Arriving in a new country can mean being offline for days—unless you use an eSIM.

What they need: Reliable data from day one for campus, online registration, digital banking, and staying in touch.
eSIM advantage: eSIM plans are activated on arrival with top-ups available as needed.
Example: A student landing in Germany activates a 5 GB ConnectedYou eSIM to get connected immediately while settling in.

5. Multi-Country Vacationers

Multiple borders shouldn’t mean multiple SIM hassles.

What they need: One data plan that works everywhere on multi-country trips.
eSIM advantage: Global or regional eSIMs that cover several countries, with instant setup—no swapping required.
Example: A couple traveling across Europe activates a ConnectedYou Europe eSIM that works in 37 countries—no card changes needed.

87% of travelers rated eSIMs as “very important” for instant activation and cost savings.

6. Budget Conscious Travelers

No one likes hidden fees or surprise charges.

What they need: Transparent, affordable mobile data.
eSIM advantage: eSIMs eliminate surprise roaming charges with transparent pricing. Just simple data plans, starting at $4.
Example: A traveler from Canada visits the U.S. for a week. Instead of paying $12/day in roaming fees, he activates a ConnectedYou 3 GB U.S. eSIM for $8, which lasts his entire 7-day trip, saving over $75 in roaming costs.

Related: Wondering how much data Spotify uses? Here’s a quick breakdown.

7. Dual-SIM Phone Users

Keep your primary home number active while using a travel line.

What they need: Two active lines: one for travel, one for home use.
eSIM advantage: Dual-SIM phones allow physical + eSIM. Use your physical SIM for your home number and an eSIM for affordable international data.
Example: A traveler keeps their home SIM for calls while using a ConnectedYou eSIM for travel data.

Most modern smartphones, including iPhones and Androids, support eSIM + SIM functionality.

Related: How to activate eSIM on iPhone

Why ConnectedYou eSIMs Are Among the Best in the Market

ConnectedYou offers travel-ready, global eSIMs built for real-world flexibility, fast performance, and real savings.

Here’s why we're a top choice:

Global 5G Coverage in Countries Worldwide
ConnectedYou travel eSIMs bring you fast, reliable 4G/5G data in countries around the world.
Local and Regional Plans
From single-country data packs to regional and multi-country coverage, our plans fit every kind of trip. Whether it’s a weekend getaway or a cross-border adventure.
Instant Digital Setup
No waiting. No shipping. Activate your eSIM instantly via email using a QR code, long-press, or manual input. It’s 100% digital and SIM card–free.
Seamless Dual-SIM Support
Keep your home line active for calls using physical SIM while using ConnectedYou mobile data on your eSIM—perfect for travel
Transparent Savings
Avoid surprise roaming bill shocks. ConnectedYou eSIMs offer travel plans starting at just $4.50, saving you up to 90% compared to traditional roaming.
Mobile Hotspot Ready
Need to connect your laptop or share data with others? All ConnectedYou eSIM plans support mobile hotspot, so you can work, stream, or share on your terms.

Whether you're ready to switch from a physical SIM to eSIM or simply want more control, coverage, and convenience, ConnectedYou makes global connectivity easy.

Try ConnectedYou’s eSIM today.