Osaka, Kansai Airport, 11 p.m. The rental pocket WiFi kiosk is closed. There is a sign with a phone number. You have no connection to call it. The guy next to you pulls out his phone, taps something, and is online in forty seconds. You are standing there holding a confirmation printout like it is 2009.
That is the pocket WiFi experience nobody puts in the brochure.
I am not here to bash pocket WiFi unfairly. It has served millions of travelers reasonably well over the years. But if you are choosing between pocket WiFi and a travel eSIM right now, in 2025, the comparison is not as close as rental companies want you to think. Let me go through it honestly.
The advertised price looks fine. Something like €5 to €9 per day. Then you add the delivery fee if you want it at home first. Then the return shipping if you are flying home from a different city than you landed in. Then the battery anxiety that starts around 3 p.m. every day because the device is dying and your maps app has been running in the background.
You are also carrying an extra device. Charging an extra device. Losing sleep over an extra device.
If the unit gets lost or damaged, you are looking at fees that can hit €200 or more depending on the rental company. That is buried in the terms. Most people never read it until they need to.
Total real cost for a ten-day Japan trip with pocket WiFi: easily €130 to €160 once you factor in everything. Sometimes more.
A solid regional eSIM for Japan or Southeast Asia through a service like eSIMMY runs roughly €3 to €8 per day depending on data volume and coverage area. No device. No return logistics. No deposit.
You message on WhatsApp, we confirm your coverage, we send you an install link, you tap it in your phone's Settings, and you are done. That whole process takes under five minutes. You can do it the night before you fly.
Your phone stays your phone. One device in your pocket. Battery is your battery, nothing else stealing from it.
If you want to dig into whether the value actually holds up across different trip types, this post gives an honest answer on whether eSIM is worth it for travel.
Pocket WiFi devices typically advertise eight to ten hours of battery life. In practice, with heavy map use and a few people sharing the connection, you are looking at six hours. Maybe less in cold weather.
Six hours is not a travel day. A travel day is fourteen hours.
So now you are hunting for a cafe with a plug at 2 p.m., not because you want coffee, but because your connectivity device is dying. That is not a minor inconvenience. It actively shapes your day. You detour. You wait. You stress.
An eSIM uses your phone's own connection. Your phone battery management is your normal routine. No separate anxiety.
Pocket WiFi does have one genuine advantage. Multiple people can share a single device. If you are traveling as a family or a group of four, splitting one €7 per day rental four ways gets you to €1.75 per person per day. That is hard to beat.
But. Everyone has to stay close enough for the WiFi signal to reach. Someone always ends up holding the device. Someone always forgets to charge it. One person wanders ahead in the museum and suddenly nobody has internet.
For solo travelers and couples, sharing is not a meaningful advantage. For larger groups, it is worth doing the math but also worth being honest about the signal radius problem.
Pick-up. Return. Waiting. Planning your arrival airport to match the rental desk hours. Panicking when your flight is delayed and the return window closes. These are not theoretical problems. Thousands of travelers hit them every year.
An eSIM has no logistics. You buy it from anywhere. You install it from anywhere. When your trip ends, you just stop using it. Nothing to return. Nothing to lose.
If you are doing a multi-country trip, this gap gets even wider. Imagine swapping pocket WiFi units between countries versus having one eSIM that covers the whole region. Here is a breakdown of what multi-country eSIM coverage actually looks like and what you get for the price.
Pocket WiFi made sense when smartphones could not hold eSIM profiles and when international roaming cost €15 per day minimum. That world is gone.
Today, for any solo traveler or couple, pocket WiFi is an inferior product dressed up in familiar packaging. It costs more in total, creates logistical friction, drains a second battery, and requires you to carry extra hardware for no meaningful gain.
The only scenario where I would still consider it: a group of four or more sharing costs, traveling together in tight formation, and picking up and returning in the same city. Even then, the hassle is real.
For everyone else, a travel eSIM is the straightforward choice. Not because it is new. Because it is simply better for how people actually travel now.
If you want to see how eSIM stacks up against the other classic alternative, here is the full eSIM vs SIM card comparison.
Get connected before you land. Message eSIMMY on WhatsApp, and we will have you sorted in minutes.
Written by Texas Bukkens
Founder of eSIMMY. Spent years watching roaming charges eat into travel budgets - and built the fix. About Texas →
Tell us your route on WhatsApp. We confirm coverage and send your install link. Done before you board.
Say 'Hey' on WhatsAppFROM €2.85/DAY · 94 COUNTRIES