The short answer first. For a short trip with one or two travelers, if your phone supports eSIM, an eSIM is the lighter, simpler choice — nothing to pick up, return, or keep charged. On the other hand, if you want to share a single connection across a family or group, connect several devices including ones that don't support eSIM, or you'd rather not set things up yourself, a pocket Wi-Fi rental may suit you better. Neither is universally "the best" — the surest way to avoid regret is to choose based on group size, devices, how much you want to carry, and your budget. Below we lay it out neutrally across six angles.
- For 1–2 people on a short trip with eSIM-capable phones, an eSIM is the lightest option — no pickup or return
- For families, groups, multiple devices, or non-eSIM phones, a Wi-Fi rental tends to fit better
- Solo travelers often do well with eSIM; sharing one device among several people often makes Wi-Fi cheaper per person
- These are data-only services — no phone number, voice calls, or SMS verification — but app-based calls like WhatsApp work fine over data
- There's no absolute winner; choosing by group size, devices, luggage, and budget is the safe bet
This article is part of our pillar guide, Comparing Ways to Stay Connected Abroad (pillar article). If you'd like to weigh more than just Wi-Fi rentals — including local SIM cards and more — take a look there too.
What's the difference between an eSIM and a pocket Wi-Fi rental? Start with how they work
Both are "ways to get your phone online while traveling," but the way they connect is completely different. Understanding the distinction makes it much easier to judge which fits you.
eSIM — loading a data plan onto the phone itself
An eSIM is a digital SIM built into your phone, onto which you write a travel data plan. You buy it online before you leave, set it up via a QR code or similar, and then simply activate the line once you arrive. There's no swapping physical cards and no extra device to carry. The catch: your phone has to support eSIM, so the first step is checking compatibility. You can check eSIM-compatible devices here.
Pocket Wi-Fi rental — borrowing a small router to carry with you
With a pocket Wi-Fi rental, you borrow a mobile Wi-Fi router (a small connectivity device) before departure and power it on once you arrive. The router picks up the mobile signal, and your phone or laptop connects to it over Wi-Fi. It works even if your device doesn't support eSIM, and one router can be shared by several people and devices. The trade-off: you have to handle pickup and return, keep the router charged, carry it with you, and be careful not to lose it.
Comparing cost — which is cheaper?
"So which one is actually cheaper?" is probably the biggest question. Cost depends on the number of travelers, days, data amount, destination, and current promotions, so there's no one-size-fits-all answer. As a general tendency, though, it breaks down like this:
- For solo use: an eSIM lets you buy data for just one person, so there tends to be little waste.
- For sharing one device among several people: a Wi-Fi rental's single fee can be split across the group, so the more people there are, the lower the per-person cost tends to be.
- Costs that tend to add up: Wi-Fi rentals can carry extras like device-insurance options, airport or counter pickup/return fees, and late charges if you forget to return the router. An eSIM has none of these device-related costs.
eSIM pricing varies by destination, data amount, and number of days, and the most accurate figure is always the one shown at checkout. You can review Bloomy's pricing in the table below (latest rates, shown at the time of display).
[bloomy_price_table]
If you're unsure about cost, the eSIM comparison page lets you pick a destination, data amount, and trip length to find a plan that matches your itinerary. Because Wi-Fi rental prices vary by provider, this article doesn't state specific figures — we recommend comparing them against each service's latest quote (as of June 2026).
Comparing convenience and setup effort
Just as important as cost is the effort of preparing and returning. In the rush before and after a trip, it's easy to overlook how much hassle each option involves.
| Item | eSIM | Pocket Wi-Fi rental |
|---|---|---|
| Pickup | Online purchase only — no shipping or in-store pickup | Collect at an airport counter, store, or by delivery |
| Return | Not needed | Required (don't forget to return it) |
| What to carry | Just your phone — nothing extra | The router plus its charging cable |
| Charging | Only your phone | The router also needs charging |
| Initial setup | You set it up yourself via QR code, etc. | Just power on and connect to Wi-Fi |
An eSIM means no extra luggage and nothing to return, but you do need to do the initial setup yourself. If that feels daunting, our eSIM setup guide walks through the steps. Reviewing the flow beforehand saves you from scrambling on the day. Conversely, if you'd rather avoid fiddling with settings altogether, a Wi-Fi rental — which works the moment you switch it on — may feel easier.
Comparing multi-device and group use
If you're thinking "I want the whole family to use it" or "I need to connect both my phone and my laptop," ease of simultaneous connections becomes a key deciding factor.
A Wi-Fi rental lets everyone share one device
A Wi-Fi rental can connect several phones, laptops, and tablets to a single router at once. It suits family or group travel where you want "everyone sharing one connection." The catch is that everyone needs to stay near the same router — if people split up, some will be out of range. Connecting more devices can also affect speed and battery life.
An eSIM gives each person their own line and freedom to move
An eSIM is generally one line per phone. If each family member loads an eSIM onto their own device, everyone stays connected even when they go their separate ways. Most phones also support tethering (sharing your phone's connection with other devices), so you can temporarily connect a laptop to your own phone. That said, whether tethering is allowed and under what conditions can vary by plan, so it's worth checking before you buy.
Comparing speed, reliability, and battery
With either an eSIM or a Wi-Fi rental, connection speed and reliability depend on the local network, coverage area, and congestion at the time of day. Neither can be guaranteed to be faster. Here are the tendencies worth keeping in mind:
- Battery: with an eSIM you only have to watch your phone's battery; with a Wi-Fi rental you also have to mind the router running flat. After a full day out and about, a router's charge can become a worry.
- Out of range: with an eSIM the phone itself receives the signal, so it stays connected even in your pocket. With a Wi-Fi rental, you lose signal once you move away from the router.
- Loss or damage: a Wi-Fi rental can incur a fee if the router is lost or damaged. An eSIM has no device to carry, so that worry doesn't apply.
For those who want to use a lot of data, there are also unlimited-type eSIMs. Note, however, that even "unlimited" plans may come with a fair-usage policy, reduced speeds after a certain amount of use, or tethering conditions — so it isn't truly limitless, use-as-much-as-you-like data. If long video streaming or tethering matters to you, it's wise to review the terms of the unlimited plan before buying (as of June 2026).
An important note — what about a phone number, SMS, and calls?
Something easy to overlook is how phone numbers and SMS are handled. Bloomy's data-only eSIM is, by design, for data communication only. It does not come with a local phone number, the ability to receive SMS (text-message) verification codes, or voice calling. The same applies to Wi-Fi rentals — both are centered on data.
Because of this, app-based calls and messaging through services like WhatsApp can generally be used with either option, as long as you have a working data connection. However, if you need to receive an SMS verification code on a phone number for banking or other services, or you need to make voice calls to local phone numbers, please also consider other approaches (such as keeping your existing number active, or a plan that includes a number). For more on how numbers and SMS work, our explainers on phone numbers and SMS may help.
Which is right for you? A by-type guide
An eSIM suits you if…
- You're traveling solo or as a pair on a short trip or business trip and want to travel light
- Your phone supports eSIM
- You want to avoid the hassle of pickup, return, and charging, and the risk of losing a device
- You often go your own way and want everyone connected on their own line
A pocket Wi-Fi rental suits you if…
- You want a family or group to share a single connection
- You need to connect non-eSIM devices, or multiple laptops and tablets
- You're uneasy about setting things up yourself and just want to switch it on
- You plan to stay together as the same group throughout
Actually, "using both" or "mixing and matching" is an option too
You can also combine the two — for example, each person loads an eSIM, while whoever does a lot of laptop work also carries a separate Wi-Fi device. Depending on your itinerary and the size of your party, mixing options instead of forcing yourself into just one can be a smart choice.
How to find the right eSIM with Bloomy
If an eSIM sounds like a good fit, start by checking whether your phone is compatible, then choose a plan based on your destination, data amount, and trip length. Bloomy provides clear comparison tools and post-purchase support so even first-timers won't get lost.
- Check compatible devices to confirm your phone can use eSIM
- Use the eSIM comparison page to find a plan by country, data amount, and days
- After purchase, follow the setup guide to get everything ready before you leave
- If you can't connect on arrival, see what to do when you can't connect
You can check your eSIM's remaining data and QR code anytime on My Account. And if you'd like to compare connectivity options more broadly, take a look at Comparing Ways to Stay Connected Abroad as well.
