Are eSIMs really that good? There must be disadvantages!

Okay, we admit it. eSIMs are pretty awesome. But are they really all that? We're taking a look at some of the (minor) disadvantages of eSIMs.

Not all devices are eSIM-compatible

One of the primary disadvantages of eSIMs is that you need an [eSIM-compatible device[(https://www.getnomad.app/shop/support_device) — and not all devices are eSIM-compatible!

eSIM-compatibility can also depend on other factors like manufacturer and device origin. For example, while most newer iPhone models are eSIM-compatible, an iPhone purchased in Hong Kong or China might not support eSIMs.

And even if you have purchased an eSIM-compatible device, you might still be unable to use an eSIM if your local carrier doesn't support it for that specific model.

Changing devices might not be straightforward

Another disadvantage of using an eSIM is that changing devices may not be as simple as a physical SIM card.

With a physical SIM, switching phones is straightforward — you just remove the SIM card from your old phone and insert it into your new one. However, this is not possible with an eSIM.

If you are using an eSIM and need to change phones, you will likely have to contact your local provider to learn how to transfer your eSIM. While Android and iOS have eSIM transfer tools, not all carriers support eSIM transfers.

Double-check with your provider to ensure they allow eSIM transfers and understand the process involved.

Inflexibility in troubleshooting

With a physical SIM, troubleshooting is straightforward — you simply remove and test the SIM card in another device or replace it with a new one. However, this is not possible with an eSIM.

Since eSIMs are embedded in your device, you can’t just swap them out if something goes wrong. Instead, resolving issues usually involves contacting your service provider or navigating your device’s settings, which can be more time-consuming and less convenient.

Dependency on operating system

One of the common disadvantages of using an eSIM is its reliance on the phone’s operating system for activation and management. Unlike a physical SIM, which operates independently of software, an eSIM depends on your device’s software to function properly. This means that issues like system bugs, glitches, or even updates can complicate its usage and leave you temporarily disconnected.

Compatibility and fragmentation

Another notable disadvantage of eSIMs is the lack of universal standards, which leads to fragmented user experiences. While eSIM technology is becoming more popular, not all carriers and devices fully support it. Older phones and certain regional models, such as those sold in China, often lack eSIM compatibility. This inconsistency can make adopting eSIMs frustrating, especially if you frequently switch devices or travel internationally.

Myth-busting: these 'disadvantages' are not true!

Some people might think that eSIMs also result in other disadvantages, like using more battery or data, or slower speed. But, these are not true! Let’s address the most common misconceptions:

• Slower network speeds or poor connectivity: Some believe that eSIMs result in slower network speeds or weaker connections. This is a myth. The quality of your connection is determined by your network provider and coverage, not by whether you use an eSIM or a physical SIM. Both function identically when it comes to connectivity.
• Higher battery drain: It’s often assumed that eSIMs use more battery than physical SIM cards. However, this is not the case. Battery usage depends on factors like signal strength, background apps, and screen-on time — not the type of SIM. Whether you use an eSIM or a physical SIM, your battery life remains unaffected.
• Increased data consumption: Another misconception is that eSIMs use more mobile data. This is untrue. Data usage is solely determined by your activities, such as streaming, downloading, or browsing, and is not impacted by the type of SIM card in your device.
• Lower security: Some worry that eSIMs are less secure than physical SIM cards. In fact, eSIMs are more secure. Since they are embedded into your device, they cannot be easily removed or tampered with. Additionally, eSIMs can be remotely disabled if your phone is lost or stolen, offering an extra layer of protection.

eSIMs are still a great option for traveling

While eSIMs may have some inconveniences, as outlined above, they are undeniably a great option for travelers. The benefits of using an eSIM during your travels often outweigh its disadvantages.

In fact, many of the disadvantages associated with eSIMs are not relevant when traveling. For instance, it’s unlikely that you’ll be switching devices frequently during your trip, so the challenges related to changing devices won’t be a concern. Other advantages include:

Convenience and flexibility

eSIMs offer unmatched convenience and flexibility by eliminating the need for physical SIM cards. You no longer have to deal with the hassle of inserting or removing SIM cards when switching devices. Switching carriers or plans is also simpler, as you can do it directly from your device without needing a physical SIM. Additionally, eSIMs support multiple carrier profiles, allowing you to store and manage various plans on the same device — a perfect solution for travelers or those who need to switch between personal and work numbers.

Enhanced security

eSIMs provide enhanced security by being embedded directly into your device, making them impossible to lose or steal. This design also reduces the risk of physical tampering, as there’s no removable component. Furthermore, carriers can manage and update eSIMs remotely, adding an extra layer of security and ensuring seamless updates without requiring any physical intervention.

Get a Nomad eSIM for your next trip

Nomad offers data plans in over 190 countries, and you can be sure to find one that is suitable for your travel needs. And if you will be traveling across multiple countries, there are also regional plans available so you can stay seamlessly connected as you hop between countries. Data plans are available from as low as $1.50/GB.

If you are unsure about how much data you need for your trip, Nomad also has a Data Calculator that can help you find the plan that is most suitable for you. Also check out our blog post on data-saving tips when traveling to keep your data usage in check overseas.

Frequently asked questions

What are the main disadvantages of using an eSIM?

eSIMs can be less convenient for troubleshooting or switching devices and rely on your phone’s operating system for activation and management.

Are eSIMs better than physical SIMs for international travel?

Yes, eSIMs are often better for travel. They allow you to switch to local carriers easily without needing to purchase or carry a physical SIM card.

How secure are eSIMs compared to physical SIM cards?

eSIMs are just as secure, if not more so, as they cannot be removed or tampered with and can be disabled remotely if needed.

Which carriers support eSIM technology?

Many global carriers now support eSIMs, but availability depends on your region. Check with your local provider for compatibility.

Can I use both an eSIM and a physical SIM in one device?

Yes, many devices support dual SIM functionality, allowing you to use an eSIM and a physical SIM simultaneously.