Alternative

An Airalo alternative for Japan, and how to tell if you need one

Disclosure: ESIM KIMONO is our store. Competitor facts come from their own pages and public reviews, checked 13 October 2026, each linked.

Short answer: if your Airalo eSIM is misbehaving in Japan, spend five minutes on the checks below first; they fix most "No Service" screens with any brand. If it is still slow or dead, install a second eSIM over hotel Wi-Fi tonight and keep Airalo on the phone in case it recovers. Choose the alternative by your problem: a dead connection, slow evenings on unlimited, or wanting a different network.

Is this your evening?

You are in an Osaka station with your family and the map has stopped loading. The kids are tired, the taxi app spins, the ticket machine is in Japanese. Back at the hotel the eSIM shows full bars and almost no data. Tomorrow's train leaves at 8am.

You need to know whether this is a setting, a rule, or a broken eSIM, and what to do before morning.

Is it Airalo, or is it a setting?

Most eSIM "failures" are one of four settings. Our rescue card works for every brand, Airalo included.

Data Roaming ON for the Airalo line. The travel line, not your home line. This is the most common cause.
Mobile data set to the Airalo line. iPhone: Settings, Cellular, Cellular Data. Android: SIM manager, Mobile data.
Airplane mode on for 10 seconds, then off. Then restart once.
Turn off Wi-Fi Calling over cellular if it is on. One r/Airalo user wrote: "Once I turned that off Airalo worked much better." (r/Airalo)

Slow on unlimited? Check today's usage. Airalo's policy says that after 3GB in a 24-hour period, speed drops to 1 Mbps until the period resets, counted from activation, not from midnight (Airalo fair use policy). Past 3GB by mid-afternoon means nothing is broken: maps and messages run, video calls struggle.

If you still have no bars, contact Airalo support first, and don't delete the eSIM while you wait.

Are other travelers seeing the same thing?

On Airalo's Trustpilot (13 October 2026: 4.1 TrustScore, 47,122 reviews, 20.1% of them 1-2 stars, source), we read the latest 1-2 star reviews that mention Japan. Of 28 describing a bad experience there, 20 were about the eSIM not connecting or stopping mid-trip:

"it did work in Okinawa Japan then it stopped working when I got to Akita Japan. I hadn't used up my data at all." (June 2026)
"Most of the time the eSIM showed 'No Service,' and when it did connect, the connection would often drop..." (June 2026)
"Have to keep toggling airplane mode very frequently. This happen in Tokyo Japan too." (June 2026)

Most Airalo customers never hit this; 62.3% of its reviews are 5-star.

How do you switch tonight without losing Airalo?

Most modern phones store several eSIM profiles and use one at a time for data.

On hotel Wi-Fi, buy the alternative. With us there is no app and no account. The QR code arrives by email within minutes (how it works).
Install it by scanning the QR from a second screen, such as a laptop or a partner's phone, or enter the code manually.
Switch the data line to the new eSIM and turn Data Roaming on for it.
Leave Airalo installed but off. If support fixes it, switch back. If not, Airalo's terms offer a replacement or refund for a faulty eSIM, with partly used plans refunded only for the unused portion (Airalo terms).

One warning for every brand: don't delete an eSIM to "reinstall" it. Most QR codes install only once.

Which alternative fits your problem?

Your problem	Consider	Network	Speed rule	Hotspot
Unlimited gets slow every evening	ESIM KIMONO	KDDI 4G/5G	Flat 10 Mbps, no daily data cap (/fup/)	Most plans; rule printed at checkout
Same, but you burst usage on some days	Ubigi	NTT Docomo and KDDI	25GB at full speed per 7-day plan, then 2 Mbps (Ubigi)	Not compared
You want a higher daily allowance	Saily	KDDI and SoftBank	5GB a day at full speed, then up to 1 Mbps (saily.com)	"Limitless hotspot sharing"
You'd rather have fixed data than unlimited	Nomad	KDDI au / SoftBank (getnomad.app)	Fixed data plans	Not compared

Need a Japanese phone number? Mobal sells voice plans (mobal.com); ESIM KIMONO is data only. Where rivals are genuinely stronger: Ubigi adds Docomo, and Saily advertises unlimited hotspot sharing.

Why do travelers switch to ESIM KIMONO?

Four things, all in writing:

One speed rule. No daily allowance to hit. 10 Mbps from first minute to last, enough for maps, video calls and HD streaming. Fixed plans run at full network speed, then slow to 384 kbps instead of stopping.
A named network. KDDI, a licensed Japanese carrier, on a GSMA standard eSIM profile.
A human who answers. Real people on chat and [email protected].
A fix if it fails. A faulty eSIM is replaced one for one, and unused plans are refunded under package terms (/help/).

ESIM KIMONO is run by Fizen LLC; Fizen.io has 500,000+ app users and a strategic investment from Tether. Payments run on Stripe, PCI DSS Level 1.

Haven't left yet?

Install two eSIMs before you fly, so a dead map never strands you.
Prefer fixed data unless you need unlimited. One Airalo user switched to fixed after a friend's unlimited was "unusable" and called their own speeds "much much better" (r/Airalo). See how much data you need.

FAQ

Why is my Airalo so slow in Japan?

On unlimited, likely Airalo's fair use rule: after 3GB in a 24-hour period, speed drops to 1 Mbps until it resets. On fixed plans, check Data Roaming, the data line and Wi-Fi Calling, then contact Airalo.

Can I keep Airalo and another eSIM on the same phone?

Yes. Most eSIM phones store several profiles; choose which one carries data in settings.

Will I get my Airalo money back if I switch?

That depends on Airalo's terms. A faulty eSIM can get a replacement or refund, only for the unused portion if partly used.

What is the fastest way to get online again tonight?

Buy an alternative over hotel Wi-Fi, scan the emailed QR from a second screen, switch your data line and turn on Data Roaming.

How does ESIM KIMONO's price compare with Airalo?

We don't compete on price. Plans are priced for a carrier-grade network and a human who answers. Today's price is on the button below.

All Japan plans

Competitor facts on this page were checked on 13 October 2026 on their own pages. The button above shows today's price.