iRoamly could be the most versatile travel eSIM brand, supporting fast and stable internet in over 140 countries. It offers a wide range of package options including Daily, Total, Unlimited, as well as packages with calls and SMS.
iRoamly 
iRoamly could be the most versatile travel eSIM brand, supporting fast and stable internet in over 140 countries. It offers a wide range of package options including Daily, Total, Unlimited, as well as packages with calls and SMS.
iRoamly eSIM Data Plans for Japan
Japan-500MB-1 Day-Daily
500MB
1
Day
$2.00
$4.00/GB
Japan-500MB-3 Days-Daily
500MB
per day
3
Days
$3.00
$2.00/GB
Japan-1GB-1 Day-Daily
1GB
1
Day
$3.00
$3.00/GB
Japan-500MB-5 Days-Daily
500MB
per day
5
Days
$4.00
$1.60/GB
Japan-Unlimited-1 Day-Daily
500GB
1
Day
$4.00
$0.01/GB
Japan-2GB-1 Day-Daily
2GB
1
Day
$4.00
$2.00/GB
Japan-500MB-7 Days-Daily
500MB
per day
7
Days
$5.00
$1.43/GB
Japan-3GB-3 Days-Total
3GB
3
Days
$5.00
$1.67/GB
Japan-5GB-3 Days-Total
5GB
3
Days
$5.00
$1.00/GB
Japan-3GB-5 Days-Total
3GB
5
Days
$5.50
$1.83/GB
Japan-1GB-3 Days-Daily
1GB
per day
3
Days
$6.00
$2.00/GB
Japan-3GB-7 Days-Total
3GB
7
Days
$6.00
$2.00/GB
Japan-5GB-5 Days-Total
5GB
5
Days
$6.00
$1.20/GB
Japan-5GB-7 Days-Total
5GB
7
Days
$6.50
$1.30/GB
Japan-3GB-10 Days-Total
3GB
10
Days
$6.50
$2.17/GB
Japan-500MB-10 Days-Daily
500MB
per day
10
Days
$7.00
$1.40/GB
Japan-3GB-15 Days-Total
3GB
15
Days
$7.00
$2.33/GB
Japan-5GB-10 Days-Total
5GB
10
Days
$7.00
$1.40/GB
Japan-3GB-30 Days-Total
3GB
30
Days
$7.50
$2.50/GB
Japan-5GB-15 Days-Total
5GB
15
Days
$7.50
$1.50/GB
Japan-1GB-5 Days-Daily
1GB
per day
5
Days
$8.00
$1.60/GB
Japan-2GB-3 Days-Daily
2GB
per day
3
Days
$8.00
$1.33/GB
Japan-5GB-30 Days-Total
5GB
30
Days
$8.00
$1.60/GB
Asia ( 11 Countries)-5GB-3 Days-Total
5GB
3
Days
$10.00
$2.00/GB
Japan-10GB-3 Days-Total
10GB
3
Days
$10.00
$1.00/GB
Japan-Unlimited-3 Days-Daily
500GB
3
Days
$10.00
$0.02/GB
Japan-500MB-15 Days-Daily
500MB
per day
15
Days
$10.00
$1.33/GB
Japan-1GB-7 Days-Daily
1GB
per day
7
Days
$10.00
$1.43/GB
Asia ( 11 Countries)-5GB-5 Days-Total
5GB
5
Days
$10.50
$2.10/GB
Asia ( 11 Countries)-5GB-7 Days-Total
5GB
7
Days
$11.00
$2.20/GB
Japan-10GB-5 Days-Total
10GB
5
Days
$11.00
$1.10/GB
Asia ( 11 Countries)-5GB-10 Days-Total
5GB
10
Days
$12.00
$2.40/GB
Japan-1GB-10 Days-Daily
1GB
per day
10
Days
$12.00
$1.20/GB
Japan-2GB-5 Days-Daily
2GB
per day
5
Days
$12.00
$1.20/GB
Japan-10GB-7 Days-Total
10GB
7
Days
$12.00
$1.20/GB
Asia ( 11 Countries)-5GB-15 Days-Total
5GB
15
Days
$12.50
$2.50/GB
Asia ( 11 Countries)-5GB-30 Days-Total
5GB
30
Days
$13.00
$2.60/GB
Japan-500MB-20 Days-Daily
500MB
per day
20
Days
$13.00
$1.30/GB
Japan-10GB-10 Days-Total
10GB
10
Days
$13.00
$1.30/GB
Japan-10GB-15 Days-Total
10GB
15
Days
$14.00
$1.40/GB
Japan-10GB-30 Days-Total
10GB
30
Days
$14.50
$1.45/GB
Japan-Unlimited-5 Days-Daily
500GB
5
Days
$16.00
$0.03/GB
Japan-2GB-7 Days-Daily
2GB
per day
7
Days
$16.00
$1.14/GB
Japan-1GB-15 Days-Daily
1GB
per day
15
Days
$17.00
$1.13/GB
Asia ( 11 Countries)-10GB-3 Days-Total
10GB
3
Days
$18.00
$1.80/GB
Japan-500MB-30 Days-Daily
500MB
per day
30
Days
$18.00
$1.20/GB
Asia ( 11 Countries)-10GB-5 Days-Total
10GB
5
Days
$19.00
$1.90/GB
Japan-20GB-3 Days-Total
20GB
3
Days
$19.00
$0.95/GB
Asia ( 11 Countries)-10GB-7 Days-Total
10GB
7
Days
$20.00
$2.00/GB
Japan-20GB-5 Days-Total
20GB
5
Days
$20.00
$1.00/GB
Asia ( 11 Countries)-10GB-10 Days-Total
10GB
10
Days
$21.00
$2.10/GB
Japan-2GB-10 Days-Daily
2GB
per day
10
Days
$21.00
$1.05/GB
Asia ( 11 Countries)-10GB-15 Days-Total
10GB
15
Days
$22.00
$2.20/GB
Japan-1GB-20 Days-Daily
1GB
per day
20
Days
$22.00
$1.10/GB
Japan-Unlimited-7 Days-Daily
500GB
7
Days
$22.00
$0.04/GB
Japan-20GB-7 Days-Total
20GB
7
Days
$22.00
$1.10/GB
Japan-20GB-10 Days-Total
20GB
10
Days
$23.00
$1.15/GB
Asia ( 11 Countries)-10GB-30 Days-Total
10GB
30
Days
$24.00
$2.40/GB
Japan-20GB-15 Days-Total
20GB
15
Days
$25.00
$1.25/GB
Japan-20GB-30 Days-Total
20GB
30
Days
$26.50
$1.33/GB
Japan-30GB-3 Days-Total
30GB
3
Days
$27.00
$0.90/GB
Japan-2GB-15 Days-Daily
2GB
per day
15
Days
$28.00
$0.93/GB
Japan-30GB-5 Days-Total
30GB
5
Days
$28.00
$0.93/GB
Japan-30GB-7 Days-Total
30GB
7
Days
$30.00
$1.00/GB
Japan-Unlimited-10 Days-Daily
500GB
10
Days
$31.00
$0.06/GB
Japan-30GB-10 Days-Total
30GB
10
Days
$32.00
$1.07/GB
Japan-1GB-30 Days-Daily
1GB
per day
30
Days
$32.00
$1.07/GB
Asia ( 11 Countries)-20GB-3 Days-Total
20GB
3
Days
$33.00
$1.65/GB
Japan-30GB-15 Days-Total
30GB
15
Days
$33.00
$1.10/GB
Asia ( 11 Countries)-20GB-5 Days-Total
20GB
5
Days
$35.00
$1.75/GB
Global ( 148 Countries)-500MB-7 Days-Daily
500MB
per day
7
Days
$35.00
$10.00/GB
Japan-30GB-30 Days-Total
30GB
30
Days
$35.00
$1.17/GB
Japan-2GB-20 Days-Daily
2GB
per day
20
Days
$37.00
$0.93/GB
Asia ( 11 Countries)-20GB-7 Days-Total
20GB
7
Days
$38.00
$1.90/GB
Asia ( 11 Countries)-20GB-10 Days-Total
20GB
10
Days
$40.00
$2.00/GB
Asia ( 11 Countries)-20GB-15 Days-Total
20GB
15
Days
$42.00
$2.10/GB
Asia ( 11 Countries)-20GB-30 Days-Total
20GB
30
Days
$45.00
$2.25/GB
Japan-Unlimited-15 Days-Daily
500GB
15
Days
$47.00
$0.09/GB
Japan-50GB-3 Days-Total
50GB
3
Days
$49.00
$0.98/GB
Global ( 148 Countries)-1GB-7 Days-Daily
1GB
per day
7
Days
$52.00
$7.43/GB
Japan-Unlimited-20 Days-Daily
8GB
per day
20
Days
$52.00
$0.33/GB
Japan-50GB-5 Days-Total
50GB
5
Days
$52.00
$1.04/GB
Japan-50GB-7 Days-Total
50GB
7
Days
$54.00
$1.08/GB
Japan-2GB-30 Days-Daily
2GB
per day
30
Days
$56.00
$0.93/GB
Japan-50GB-10 Days-Total
50GB
10
Days
$56.00
$1.12/GB
Japan-50GB-15 Days-Total
50GB
15
Days
$58.00
$1.16/GB
Japan-50GB-30 Days-Total
50GB
30
Days
$61.00
$1.22/GB
Japan-Unlimited-30 Days-Daily
8GB
per day
30
Days
$62.00
$0.26/GB
Customer reviews
Françoisused iRoamly
I used their unlimited 3-day plan and could use more than 20GB of data, so it seems to be indeed unlimited. However, the speed was capped at 10 Mbps the whole time.
Traffic was routed through Hong Kong, so the latency was not great but not too bad.
The issue with a Hong Kong IP is that I couldn't access some services like ChatGPT.
Japan Also Covered By
Other Countries Nearby Japan
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