ByteSIM offers seamless eSIM solutions for global travelers, covering 200+ destinations. With a 4.8 rating and 24/7 customer support, ByteSIM prioritize user experience. Stay connected effortlessly with ByteSIM's reliable eSIM service anytime, anywhere.
ByteSIM 
ByteSIM offers seamless eSIM solutions for global travelers, covering 200+ destinations. With a 4.8 rating and 24/7 customer support, ByteSIM prioritize user experience. Stay connected effortlessly with ByteSIM's reliable eSIM service anytime, anywhere.
ByteSIM eSIM Data Plans for Japan
Japan 500MB/day for 3 days
500MB/day
3
Days
$2.90
$1.93/GB
Japan 1GB/day for 1 day
1GB
1
Day
$2.90
$2.90/GB
Japan 1GB/day for 3 days
1GB/day
3
Days
$3.50
$1.17/GB
Japan 500MB/day for 5 days
500MB/day
5
Days
$3.50
$1.40/GB
Japan 2GB/day for 1 day
2GB
1
Day
$3.90
$1.95/GB
Japan 500MB/day for 7 days
500MB/day
7
Days
$4.50
$1.29/GB
Japan 2GB/day for 3 days
2GB/day
3
Days
$4.90
$0.82/GB
Japan 1GB/day for 5 days
1GB/day
5
Days
$4.90
$0.98/GB
Japan 3GB/day for 1 day
3GB
1
Day
$4.90
$1.63/GB
Japan 3GB for 3 days
3GB
3
Days
$4.90
$1.63/GB
Japan Unlimited Data for 1 day
1GB
+ ∞ at 10.2Mbps
1
Day
$4.90
$4.90/GB
Japan 3GB for 5 days
3GB
5
Days
$5.50
$1.83/GB
Japan 1GB/day for 7 days
1GB/day
7
Days
$5.90
$0.84/GB
Japan 5GB for 3 days
5GB
3
Days
$5.90
$1.18/GB
Japan 500MB/day for 10 days
500MB/day
10
Days
$5.90
$1.18/GB
Japan 3GB for 7 days
3GB
7
Days
$5.90
$1.97/GB
Japan 3GB for 10 days
3GB
10
Days
$6.20
$2.07/GB
Japan 3GB for 15 days
3GB
15
Days
$6.50
$2.17/GB
Japan 3GB/day for 3 days
3GB/day
3
Days
$6.90
$0.77/GB
Japan 5GB for 5 days
5GB
5
Days
$6.90
$1.38/GB
Japan 3GB for 30 days
3GB
30
Days
$6.90
$2.30/GB
Japan 5GB for 7 days
5GB
7
Days
$7.50
$1.50/GB
Japan 2GB/day for 5 days
2GB/day
5
Days
$7.90
$0.79/GB
Japan 500MB/day for 15 days
500MB/day
15
Days
$7.90
$1.05/GB
Japan 5GB for 10 days
5GB
10
Days
$7.90
$1.58/GB
Japan 5GB for 15 days
5GB
15
Days
$8.20
$1.64/GB
Japan 5GB/day for 3 days
5GB/day
3
Days
$8.90
$0.59/GB
Japan 1GB/day for 10 days
1GB/day
10
Days
$8.90
$0.89/GB
Japan 5GB for 30 days
5GB
30
Days
$8.90
$1.78/GB
Japan 10GB for 3 days
10GB
3
Days
$9.90
$0.99/GB
Japan 500MB/day for 20 days
500MB/day
20
Days
$9.90
$0.99/GB
Japan 10GB/day for 3 days
10GB/day
3
Days
$10.90
$0.36/GB
Japan 3GB/day for 5 days
3GB/day
5
Days
$10.90
$0.73/GB
Japan 2GB/day for 7 days
2GB/day
7
Days
$10.90
$0.78/GB
Japan 10GB for 5 days
10GB
5
Days
$10.90
$1.09/GB
Japan Unlimited Data for 3 days
1GB/day
+ ∞ at 10.2Mbps
3
Days
$10.90
$3.63/GB
Japan 1GB/day for 15 days
1GB/day
15
Days
$11.90
$0.79/GB
Japan 10GB for 7 days
10GB
7
Days
$11.90
$1.19/GB
Japan 10GB for 10 days
10GB
10
Days
$12.90
$1.29/GB
Japan 10GB for 15 days
10GB
15
Days
$13.00
$1.30/GB
Japan 10GB for 30 days
10GB
30
Days
$13.20
$1.32/GB
Japan 5GB/day for 5 days
5GB/day
5
Days
$14.90
$0.60/GB
Japan 3GB/day for 7 days
3GB/day
7
Days
$14.90
$0.71/GB
Japan 2GB/day for 10 days
2GB/day
10
Days
$14.90
$0.75/GB
Japan 500MB/day for 30 days
500MB/day
30
Days
$14.90
$0.99/GB
Japan 1GB/day for 20 days
1GB/day
20
Days
$15.90
$0.80/GB
Japan 10GB/day for 5 days
10GB/day
5
Days
$17.90
$0.36/GB
Japan Unlimited Data for 5 days
1GB/day
+ ∞ at 10.2Mbps
5
Days
$17.90
$3.58/GB
Japan - 5G Ultra Unlimited eSIM by KDDI for 7 days
Unlimited
4
Days
$18.90
Possible Throttling
Low latency
Japan 5GB/day for 7 days
5GB/day
7
Days
$19.90
$0.57/GB
Japan 20GB for 3 days
20GB
3
Days
$19.90
$0.99/GB
Japan 3GB/day for 10 days
3GB/day
10
Days
$20.90
$0.70/GB
Japan 2GB/day for 15 days
2GB/day
15
Days
$20.90
$0.70/GB
Japan 20GB for 5 days
20GB
5
Days
$20.90
$1.05/GB
Japan 20GB for 7 days
20GB
7
Days
$21.90
$1.10/GB
Japan 20GB for 10 days
20GB
10
Days
$23.20
$1.16/GB
Japan 20GB for 15 days
20GB
15
Days
$23.50
$1.18/GB
Japan 10GB/day for 7 days
10GB/day
7
Days
$23.90
$0.34/GB
Japan 1GB/day for 30 days
1GB/day
30
Days
$23.90
$0.80/GB
Japan 20GB for 30 days
20GB
30
Days
$23.90
$1.19/GB
Japan 30GB for 3 days
30GB
3
Days
$25.90
$0.86/GB
Japan Unlimited Data for 7 days
1GB/day
+ ∞ at 10.2Mbps
7
Days
$25.90
$3.70/GB
Japan 5GB/day for 10 days
5GB/day
10
Days
$27.90
$0.56/GB
Japan 2GB/day for 20 days
2GB/day
20
Days
$27.90
$0.70/GB
Japan 30GB for 5 days
30GB
5
Days
$27.90
$0.93/GB
Japan - 5G Ultra Unlimited eSIM by KDDI for 7 days
Unlimited
7
Days
$29.90
Possible Throttling Low latencyJapan 30GB for 7 days
30GB
7
Days
$29.90
$1.00/GB
Japan 3GB/day for 15 days
3GB/day
15
Days
$30.90
$0.69/GB
Japan 30GB for 10 days
30GB
10
Days
$31.90
$1.06/GB
Japan 10GB/day for 10 days
10GB/day
10
Days
$33.90
$0.34/GB
Japan 30GB for 15 days
30GB
15
Days
$33.90
$1.13/GB
Japan Unlimited Data for 10 days
1GB/day
+ ∞ at 10.2Mbps
10
Days
$34.90
$3.49/GB
Japan 30GB for 30 days
30GB
30
Days
$35.90
$1.20/GB
Japan - 5G Ultra Unlimited eSIM by KDDI for 10 days
Unlimited
10
Days
$39.90
Possible Throttling Low latencyJapan 3GB/day for 20 days
3GB/day
20
Days
$40.90
$0.68/GB
Japan 5GB/day for 15 days
5GB/day
15
Days
$41.90
$0.56/GB
Japan 2GB/day for 30 days
2GB/day
30
Days
$41.90
$0.70/GB
Japan 50GB for 3 days
50GB
3
Days
$48.90
$0.98/GB
Japan Unlimited Data for 15 days
1GB/day
+ ∞ at 10.2Mbps
15
Days
$49.90
$3.33/GB
Japan 10GB/day for 15 days
10GB/day
15
Days
$50.90
$0.34/GB
Japan 50GB for 5 days
50GB
5
Days
$51.90
$1.04/GB
Japan 50GB for 7 days
50GB
7
Days
$53.90
$1.08/GB
Japan - 5G Ultra Unlimited eSIM by KDDI for 15 days
Unlimited
15
Days
$55.90
Possible Throttling Low latencyJapan 5GB/day for 20 days
5GB/day
20
Days
$55.90
$0.56/GB
Japan 50GB for 10 days
50GB
10
Days
$55.90
$1.12/GB
Japan 50GB for 15 days
50GB
15
Days
$58.90
$1.18/GB
Japan 50GB for 30 days
50GB
30
Days
$59.90
$1.20/GB
Japan 3GB/day for 30 days
3GB/day
30
Days
$60.90
$0.68/GB
Japan Unlimited Data for 20 days
1GB/day
+ ∞ at 10.2Mbps
20
Days
$61.90
$3.09/GB
Japan 10GB/day for 20 days
10GB/day
20
Days
$66.90
$0.33/GB
Japan 5GB/day for 30 days
5GB/day
30
Days
$74.90
$0.50/GB
Japan Unlimited Data for 30 days
1GB/day
+ ∞ at 10.2Mbps
30
Days
$74.90
$2.50/GB
Japan - 5G Ultra Unlimited eSIM by KDDI for 31 day
Unlimited
31
Days
$79.90
Possible Throttling Low latencyJapan 10GB/day for 30 days
10GB/day
30
Days
$89.90
$0.30/GB
Frequently Asked Questions
How many data plans does ByteSIM offer for Japan?
ByteSIM currently offers 94 single coverage data plans specifically for Japan. These plans range in price from approximately $2.90 to $89.90 and offer data allowances from 500MB up to unlimited data. Of these, 49 plans feature a daily data cap, while the remaining 45 provide a fixed data amount. ByteSIM does not currently list any multi-country plans that include coverage in Japan.
Does ByteSIM offer unlimited data eSIM for Japan?
ByteSIM provides several unlimited‑data eSIM options for Japan. The plans are the “Japan – 5G Ultra Unlimited eSIM by KDDI,” available for 7 days, 10 days, 15 days and 31 days, with prices ranging from $29.90‑$79.90 USD. Each plan is labeled as unlimited data, but the description notes that speeds may be throttled after heavy use under a fair‑usage policy. Travelers who need to confirm the exact speed limits or the amount of data that remains at normal speed should contact ByteSIM directly to verify the fine‑print.
Summarized by Gen AI. Last updated:
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