eSIM vs. SIM: What Should You Choose in 2025?

eSIM vs. SIM: What Should You Choose in 2025?

One of Bob Dylan’s greatest songs, “The Times They Are a-Changin’,” conveys an important message: change is constant. 

The song fits the telecom industry to a tee. We have come a long way from smoke signals and telegraphs to 5G connectivity and the Internet of Things. 

The average individual is more connected than they have ever been. Streaming high-definition videos, sharing content in a single tap, and communicating with people across the globe - the list of technological marvels when it comes to mobile connectivity is never-ending. 

One element that plays a critical role in mobile communications is a SIM. 

Short for Subscriber Identification Module, a SIM card, when inserted into a mobile or a smart device, allows it to be connected to a cellular network. 

Like just about everything, SIM cards have undergone a massive transformation. A trend that is currently catching on are eSIMs. 

(i) But what is an eSIM? 

(ii) Is it better than a traditional SIM card? 

(iii) Who wins the eSIM vs. SIM battle? 

(iv) Is switching to an eSIM the right choice? 

We have the answers to all your questions. Read on! 

eSIM vs. SIM: A Direct Comparison

A traditional SIM card, often called a physical SIM, is a small plastic card with an integrated circuit to store the International Mobile Subscriber Identity (IMSI) number and other information related to it. It allows users to authenticate and connect to a cellular service provider through a supported device. 

An eSIM, short for Embedded Subscriber Identification Module, is similar to a traditional SIM, with one exception: an eSIM comes embedded in a device’s motherboard. 

Although the change appears small, the impact is huge. Here is what the eSIM vs. SIM battle is all about.  

Flexibility 

eSIM: 

• Switching to a different service provider is easy. You can either scan a QR code and follow the procedures, use a carrier’s app, or use remote provisioning. 
• Some carriers provide free eSIM trials, allowing you to test different carriers/plans before committing to one.  

SIM: 

• To switch to a new carrier, you have to visit a store in person or have the SIM delivered via mail. 
• Traditional SIM cards don’t work out of the box. You’ll have to contact the carrier to get it activated. In some instances, SIM card activation can take more than 24 hours. 
• Physical SIM cards can be used in all supported devices. 

Design 

eSIM: 

• Great for compact devices like smartwatches. 
• Lack of SIM slots enhances the device’s resistance to water and dust. 
• An eSIM is an eco-friendly option, as it doesn’t contain plastic.  

SIM: 

• Loss or damage of a traditional SIM card often leads to service disruption. 
• Switching to a new carrier renders the old SIM card useless, contributing to the total non-recyclable and non-biodegradable waste collected. 
• A traditional SIM takes additional space, which can be disadvantageous for smaller devices like smartwatches. 
• Physical SIM cards come in three sizes, mini, micro, and nano, which can cause confusion. 

Security 

eSIM: 

• An eSIM is impossible to steal, as it cannot be physically removed from the device. 
• Transport Layer Security (TLS) and Advanced Encryption Standards (AES) eliminate the chances of interception of transmitted data. 
• eSIMs are vulnerable to unauthorised profile activations. 

SIM: 

• Stolen devices with traditional SIM cards are harder to track, as the SIM can be disposed of easily. 
• Physical SIM cards can be cloned and used for malicious purposes. 
• SS7-based exploits allow individuals to track device location, intercept incoming and outgoing SMS and redirect calls.

Activation & Management

eSIM: 

• Users can activate and deactivate eSIMs directly from their devices without having to visit a store. 
• eSIMs can be enabled in supported devices using the following steps: 
• Android: Go to Settings/Connections or Network & Internet/Mobile Network or SIM Card Manager/Add eSIM. Choose between scanning a QR code or entering an activation code and follow the steps provided. 
• iPhone: Go to Settings/Mobile Data/Set up Mobile Data or Add eSIM. Follow the on-screen instructions provided to enable eSIM in an iPhone. 
• Switching phones is complicated, as it involves deactivation of the previous device and following the activation process in the new device. 

SIM: 

• Physical SIMs require carrier intervention for activation and deactivation. 
• Traditional SIM cards need to be activated only once. They can be transferred to any supported device. 

Here is an overview of an eSIM vs. a traditional SIM. 
 

Advantages & Disadvantages of eSIMs

Although an eSIM looks like a better option on paper, it still comes with its share of cons. However, it is important to note that, regardless of the cons, an eSIM stands out when compared to a traditional SIM card. This is especially true when you consider the plans from a top network operator like Lyca Mobile. 

Here are the advantages and disadvantages of an eSIM card. 

Advantages: 

• They are secure and harder to hack 
• They are convenient 
• They can be set up without carrier assistance 
• They are resistant to physical damage 
• They can be easily tracked if the device is stolen 
• They support multiple carriers 

Disadvantages: 

• Devices with eSIM support are limited 
• Switching between carriers is complicated, especially when a device is damaged beyond repair 
• eSIMs require an internet connection for activation, which may not always be available 

Advantages & Disadvantages of Traditional SIM Cards

The traditional SIM card may have taken a backseat because of its embedded counterpart, but it still holds some advantages. Here are the pros and cons of a physical SIM card. 

Advantages: 

• Almost all mobile and smart devices in the market support physical SIM cards 
• The same SIM card can be used across multiple devices 
• Physical SIM cards with outdated chips can be easily upgraded 
• Moving a traditional SIM card from one device to another is easy 

Disadvantages: 

• Traditional SIM cards are prone to getting lost or misplaced 
• They can only be obtained with assistance from the carrier 
• They are locked to a single carrier 
• Physical SIM cards produce e-waste 
• A traditional SIM card can have only one plan at a time 
• They are vulnerable to damage 

Conclusion

The topic of eSIM vs. SIM has been the centre of many discussions. But eSIM cards hold a definite edge. 

Yes, eSIM-compatible devices are limited for now, but considering the benefits an eSIM offers, especially to those who frequently travel, they’re bound to become the new norm soon. 

eSIMs are simple to set up, they’re secure and they provide all the pros of a physical SIM along with the convenience of hassle-free switching. 

It might sound exciting to make the switch from a traditional SIM to eSIM cards. But it is important to do your research before taking the leap.