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Japan
Osaka
Osaka Castle, Dotonbori's neon and street food, Kuromon Market, the Kaiyukan aquarium and Universal Studios Japan, with Kyoto, Nara and Kobe a short train ride away.
Japan eSIM plans
40 plans from 11 providers that work across Japan, including Osaka. Prices checked October 2026; providers change them often, so confirm before you buy.
Travel eSIM? No registration needed
- Japan has no IMEI or handset registration for visitors. Your phone just needs to be unlocked and support eSIM.
- Data-only travel eSIMs (Airalo, Saily, Holafly, Mobal data) install by QR code with no Japanese ID check.
- Want a Japanese 070/080/090 number? Voice plans like Mobal Voice or Sakura Mobile need passport ID checks. A 2026 law change may extend ID checks to data SIMs too, with no start date yet, so carry your passport.
Sources: simology.io, selectra.jp, tokyointernationalmeetup.com
How much data do I need?Estimate
Hours per day
You'll want about 7 GB for 7 days.
40 plans
GigSky
4G/5G · Hotspot OK
1 GB
7 days
View$2.99
$2.99/GB
Ubigi
4G/5G · Hotspot OK
Network not confirmed per plan (Docomo/KDDI reported)
1 GB
3 days
View$3.50
$3.50/GB
Saily
KDDI (au) · 4G/5G · Hotspot OK
Also uses SoftBank
1 GB
7 days
View$3.99
$3.99/GB
Nomad
KDDI (au) · 4G/5G · Hotspot OK
Network listed as KDDI au / SoftBank
5 GB
30 days
View$10
$2/GB
Jetpac
4G/5G · Hotspot OK
5 GB
30 days
View$10
$2/GB
Saily
KDDI (au) · 4G/5G · Hotspot OK
5 GB
30 days
View$10.99
$2.20/GB
Airalo
SoftBank · 4G/5G (not stated)
Primary network SoftBank plus 1 unnamed partner
Unlimited
3 days
View$11.50
$3.83/day
Holafly
KDDI (au) · 5G where available, 4G/LTE; fair-use slowdown up to 1 day · Hotspot OK
Hotspot capped at 1 GB/day; also uses SoftBank
Unlimited
3 days
View$11.90
$3.97/day
Mobal
Docomo · 4G/5G · Hotspot OK
¥2,340 at 158.33 JPY/USD
3 GB
8 days
View$14.78
$4.93/GB
Nomad
KDDI (au) · 4G/5G · Hotspot OK
Sale price (normally $18)
10 GB
30 days
View$16
$1.60/GB
Jetpac
4G/5G · Hotspot OK
10 GB
30 days
View$16
$1.60/GB
Ubigi
4G/5G · Hotspot OK
10 GB
30 days
View$16.50
$1.65/GB
GigSky
4G/5G · Hotspot OK
10 GB
30 days
View$16.79
$1.68/GB
Mobal
Docomo · 4G/5G · Hotspot OK
¥2,750
10 GB
8 days
View$17.37
$1.74/GB
aloSIM
KDDI (au) · LTE/5G
10 GB
30 days
View$18
$1.80/GB
Yesim
5G · Hotspot OK
esimdb lists $17.94
10 GB
30 days
View$19.20
$1.92/GB
Maya Mobile
5 GB/day full speed, then 3 Mbps · Hotspot OK
Global plan (165+ countries), not Japan-only
Unlimited
7 days
View$19.99
$2.86/day
GigSky
3.5 GB/day high speed · Hotspot OK
Daily-cap plan
Unlimited
7 days
View$24.49
$3.50/day
Mobal
Docomo · 4G/5G · Hotspot OK
¥3,900
50 GB
16 days
View$24.63
$0.49/GB
Saily
KDDI (au) · 4G/5G · Hotspot OK
20 GB
30 days
View$24.99
$1.25/GB
Nomad
KDDI (au) · 2 GB/day full speed, then 1 Mbps (per esimdb) · Hotspot OK
Unlimited
7 days
View$25
$3.57/day
Airalo
SoftBank · Third-party report: throttled to 1 Mbps after 3 GB/day
Unlimited
7 days
View$26.50
$3.79/day
aloSIM
KDDI (au) · 3 GB/day, then 1 kbps (per esimdb)
Unlimited
7 days
View$27
$3.86/day
Yesim
5G; fair-use throttling · Hotspot OK
Unlimited
7 days
View$27.48
$3.93/day
Holafly
KDDI (au) · 5G where available, 4G/LTE · Hotspot OK
Hotspot capped at 1 GB/day; also uses SoftBank
Unlimited
7 days
View$27.50
$3.93/day
Maya Mobile
5 GB/day full speed, then 3 Mbps · Hotspot OK
Global plan, not Japan-only
Unlimited
14 days
View$27.99
$2/day
Saily
KDDI (au) · 5 GB/day full speed, then 1 Mbps · Hotspot OK
Unlimited
7 days
View$28.99
$4.14/day
aloSIM
KDDI (au) · LTE/5G · Hotspot OK
'Extra' tier; hotspot named as a use case
50 GB
30 days
View$34.50
$0.69/GB
Jetpac
4G/5G · Hotspot OK
40 GB
30 days
View$34.99
$0.87/GB
Nomad
KDDI (au) · 4G/5G · Hotspot OK
50 GB
30 days
View$35
$0.70/GB
Ubigi
Then unlimited at 2 Mbps · Hotspot OK
30 GB
15 days
View$39
$1.30/GB
Yesim
5G; fair-use throttling · Hotspot OK
Unlimited
15 days
View$40.37
$2.69/day
Saily
KDDI (au) · 5 GB/day full speed, then 1 Mbps · Hotspot OK
Unlimited
15 days
View$48.99
$3.27/day
aloSIM
KDDI (au) · 3 GB/day, then 1 kbps (per esimdb)
Unlimited
15 days
View$49
$3.27/day
Maya Mobile
5 GB/day full speed, then 3 Mbps · Hotspot OK
Global plan, not Japan-only
Unlimited
30 days
View$49.99
$1.67/day
Mobal
Docomo · 4G/5G · Hotspot OK
¥8,000
100 GB
31 days
View$50.53
$0.51/GB
Ubigi
Then unlimited at 2 Mbps · Hotspot OK
60 GB
30 days
View$65
$1.08/GB
Jetpac
3 GB/24h full speed, then 1 Mbps · Hotspot OK
Unlimited
30 days
View$65.99
$2.20/day
Airalo
SoftBank · 4G/5G (not stated)
Unlimited
30 days
View$69
$2.30/day
Holafly
KDDI (au) · 5G where available, 4G/LTE · Hotspot OK
Hotspot capped at 1 GB/day; also uses SoftBank
Unlimited
30 days
View$73.90
$2.46/day
Osaka coverage & signal guide
Japan has three big networks, Docomo, KDDI (au) and SoftBank, plus newcomer Rakuten. Most travel eSIMs ride on au or SoftBank; Mobal and Sakura Mobile use Docomo. In Tokyo all three are excellent. Docomo pulls ahead underground, in the mountains and in the countryside.
- Central Tokyo
- Effectively tied above ground on all three. 5G is strongest in the city centers.
- Tokyo subway
- Docomo and au are best underground. SoftBank works but is weaker.
- Shibuya & Shinjuku crowds
- Rush-hour crowds slow every network the same way.
- Hakone & Mt Fuji
- Docomo and au are the most reliable. SoftBank and Rakuten are patchier.
- Nikko
- Docomo is the most dependable, au a close second.
- Kyoto & Osaka by Shinkansen
- Fine on all three, with brief drops in tunnels.
Sources: sakuramobile.jp, esimpass.com, simology.io
eSIM questions
Do I need to register my phone or show a passport?+
Not for a data-only travel eSIM. A plan with a Japanese phone number needs an ID check. Rules for data SIMs may tighten in 2026, so keep your passport handy.
Is unlimited really unlimited?+
Usually not. Saily and Maya slow down after 5 GB a day, Jetpac and aloSIM after 3 GB, Nomad after 2 GB. Holafly caps hotspot use at 1 GB a day.
Which network if I'm leaving Tokyo?+
For mountains, onsen towns, Nikko or hiking, a Docomo plan (Mobal, Sakura Mobile) or au is safest. For city trips, au or SoftBank plans are fine.
Can I tether a laptop?+
Most providers allow hotspot (Saily, Nomad, Jetpac, GigSky, Yesim, Mobal, Ubigi). Holafly caps it at 1 GB a day.
When should I install the eSIM?+
Install it at home on Wi-Fi before you fly. Some plans start counting days at installation, so check the plan's activation rule. Most eSIMs can only be installed once.
Checked October 2026. Rules and coverage change; confirm with your provider.