eSIM is amazing right up until this happens to you

eSIM brings a lot of convenience to the table. You don’t need to deal with tiny SIM cards or worry about visiting a carrier store to switch networks. And of course, eSIMs are more secure than physical SIMs. All of that is great, but when you actually start using eSIM on a daily basis, cracks start to show up.

You miss the simplicity of a physical SIM when you need to switch phones, run into network errors, or travel to a country where eSIM support is limited or non-existent. And once that happens to you, switching to eSIMs can start to feel more like one step forward, two steps back.

Switching phones suddenly becomes a hassle

That quick SIM swap convenience is gone

One of the most underrated perks of physical SIM cards is how easily they let you switch devices. And this is something you only realize after you switch to eSIM and want to transfer it to a different phone. Because the SIM is digitally tied to the phone, switching phones requires you to dive into cellular settings on your old phone, generate a QR code, and then scan it with the new one. All of this takes longer than simply removing and reinserting the SIM into another phone.

Even if you’re fine with the hassle of the transfer process, the bigger issue comes afterward: waiting for the SIM to get activated. In most cases, this can take a few hours. And some carriers even block messaging services for up to 24 hours after an eSIM is moved. This is far from ideal, since you can’t receive OTPs and other important messages during this time. In a way, you’re left waiting for an already-activated SIM to become usable again.

So yes, while eSIM might promise to remove the friction of going to the store to buy a physical SIM, it adds a little of it back right when you least want it.

Basic troubleshooting isn’t simple anymore

The classic SIM reset trick is gone

If you’ve used phones long enough, you probably know one universal troubleshooting trick: remove the SIM card and insert it again. It’s simple, quick, and quite effective at fixing network issues, random call drops, and mobile data errors. Sure, this isn’t something you’ll need to do often, but when you do, things are much more difficult without a physical SIM.

It becomes even more complicated when the phone itself stops working. For instance, if it refuses to boot or the screen gets damaged, you can’t even transfer your eSIM the usual way. In such cases, your only option is to contact the carrier, and depending on the service, getting eSIM working again can become quite a task.

So, while eSIM removes a physical component from the phone, it also takes away one of the easiest troubleshooting options most of us have relied on for years.

It's not supported by all devices

Your backup phone may not support it

Although eSIM has been around for a few years now, not every phone supports it. And it’s something you’ll only realize when you want to switch to a different phone temporarily. Some budget and mid-range models, even those released in 2025, don’t support eSIM at all.

This may not be a problem for you. But when you need to switch to a different phone for a day or two, it may not be possible. You first have to deactivate your eSIM, get a physical SIM from your carrier, and only then can it work with an old phone. So you’re suddenly limited by which devices can even accept your SIM. With a physical SIM, this was never even something to worry about.

eSIM-only phones make travel surprisingly inconvenient

Not every country is ready for eSIM

eSIM-only devices are becoming more and more mainstream, especially in the US. And one of the biggest arguments in favor of eSIMs is how convenient they are for travel. Most phones allow setting up anywhere from 4 to 7 profiles. This means while traveling to a different country, you can easily add a local eSIM without giving up your primary one. There’s no need to swap SIM cards and risk losing your main one.

But the thing is, not every country currently supports eSIM. If you’re traveling to such a place where physical SIMs are still the norm, your eSIM-only phone is effectively useless. In some regions, eSIMs are more costly than physical SIMs, which means you might also be forced to pay more for the same plan.

Also, as I said earlier, eSIM activation isn’t always instant. And that's the last thing you’d want when you’re in a foreign country and need to book a ride, check directions, or message someone.

eSIM is the future, but it'll take time

In many ways, eSIM is the future of smartphones. It frees up space for larger batteries, improves water resistance, and offers more security. Yet, there are a few trade-offs that simply didn’t exist with physical SIMs. So yes, using eSIM feels great until you actually face these problems and start to question the switch.