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Billion Connect eSIM Plans for Japan
Compare Billion Connect's current data plans for Japan — real prices, checked daily.
Discount code:
-10%
10% off every Billion Connect eSIM plan with ESIMKART10 — exclusive eSIMKart code, no minimum spend, coupon valid 30 days once applied (confirmed by Billion Connect, 8 October 2026).
Also running publicly: LOVEJAPAN(-30%)· Ends Dec 31 — a public promo, not an eSIMKart exclusive; see the deal card below.
Limited-time Billion Connect deals for Japan
- 42
- Plans for Japan
- $3.80
- Cheapest plan with 7+ days & 3GB+
- #15 / 124
- Price rank in Japan
- 12/12
- Trust facts verified
Best price/day
Billion Connect
Billion Connect
$0.35/day
$0.35/day
$0.32/day
15GB · 30 days
$10.60 total
$9.54 total
42 plans
All prices checked Oct 11, 2026
| # | Data | Duration | Daily cap | Price/GB | Price/day | Price | |
|---|---|---|---|---|---|---|---|
| 1 |
Best unlimited
Unlimited
2GB/day, then 128 Kbps
Hotspot supported
|
1 days |
2GB/day
then 128 Kbps
|
— | $1.82/day |
$1.82 $1.82
$1.64 |
|
| 2 | 1GB Hotspot supported | 3 days | — | $2.00/GB | $0.67/day |
$2.20
-9%
$2.00 $2.00
$1.80 $2.00/GB
|
|
| 3 |
1GB
Hotspot supported
🌍 Regional
Also valid in: South Korea
|
3 days | — | $2.49/GB | $0.83/day |
$2.49 $2.49
$2.24 $2.49/GB
|
|
| 4 | Unlimited 2GB/day, then 128 Kbps Hotspot supported | 2 days |
2GB/day
then 128 Kbps
|
— | $1.37/day |
$2.73 $2.73
$2.46 |
|
| 5 | Unlimited Throttled to 384 Kbps after the high-speed allowance Hotspot supported | 1 days |
then 384 Kbps
|
— | $2.80/day |
$2.80 $2.80
$2.52 |
|
| 6 | 3GB Hotspot supported | 5 days | — | $1.00/GB | $0.60/day |
$3.50
-14%
$3.00 $3.00
$2.70 $1.00/GB
|
|
| 7 | Unlimited 2GB/day, then 128 Kbps Hotspot supported | 3 days |
2GB/day
then 128 Kbps
|
— | $1.22/day |
$3.65 $3.65
$3.29 |
|
| 8 |
Best price
5GB
Hotspot supported
|
7 days | — | $0.76/GB | $0.54/day |
$4.10
-7%
$3.80 $3.80
$3.42 $0.76/GB
|
|
| 9 | Unlimited 2GB/day, then 128 Kbps Hotspot supported | 4 days |
2GB/day
then 128 Kbps
|
— | $1.17/day |
$4.66 $4.66
$4.19 |
|
| 10 |
5GB
Hotspot supported
🌍 Regional
Also valid in: South Korea
|
7 days | — | $1.00/GB | $0.71/day |
$4.99 $4.99
$4.49 $1.00/GB
|
|
| 11 | Unlimited Throttled to 384 Kbps after the high-speed allowance Hotspot supported | 2 days |
then 384 Kbps
|
— | $2.50/day |
$5.00 $5.00
$4.50 |
|
| 12 | Unlimited 2GB/day, then 128 Kbps Hotspot supported | 5 days |
2GB/day
then 128 Kbps
|
— | $1.12/day |
$5.61 $5.61
$5.05 |
|
| 13 | Unlimited 2GB/day, then 128 Kbps Hotspot supported | 6 days |
2GB/day
then 128 Kbps
|
— | $1.10/day |
$6.59 $6.59
$5.93 |
|
| 14 | Unlimited Throttled to 384 Kbps after the high-speed allowance Hotspot supported | 3 days |
then 384 Kbps
|
— | $2.38/day |
$7.14 $7.14
$6.43 |
|
| 15 | Unlimited 2GB/day, then 128 Kbps Hotspot supported | 7 days |
2GB/day
then 128 Kbps
|
— | $1.07/day |
$7.48 $7.48
$6.73 |
|
| 16 | 10GB Hotspot supported | 15 days | — | $0.75/GB | $0.50/day |
$8.30
-10%
$7.50 $7.50
$6.75 $0.75/GB
|
|
| 17 |
10GB
Hotspot supported
🌍 Regional
Also valid in: South Korea
|
15 days | — | $0.82/GB | $0.55/day |
$8.19 $8.19
$7.37 $0.82/GB
|
|
| 18 | Unlimited 2GB/day, then 128 Kbps Hotspot supported | 8 days |
2GB/day
then 128 Kbps
|
— | $1.05/day |
$8.42 $8.42
$7.58 |
|
| 19 | Unlimited Throttled to 384 Kbps after the high-speed allowance Hotspot supported | 4 days |
then 384 Kbps
|
— | $2.32/day |
$9.29 $9.29
$8.36 |
|
| 20 | Unlimited 2GB/day, then 128 Kbps Hotspot supported | 9 days |
2GB/day
then 128 Kbps
|
— | $1.05/day |
$9.41 $9.41
$8.47 |
|
| 21 | Unlimited 2GB/day, then 128 Kbps Hotspot supported | 10 days |
2GB/day
then 128 Kbps
|
— | $1.03/day |
$10.29 $10.29
$9.26 |
|
| 23 | Unlimited Throttled to 384 Kbps after the high-speed allowance Hotspot supported | 5 days |
then 384 Kbps
|
— | $2.24/day |
$11.21 $11.21
$10.09 |
|
| 24 | Unlimited 2GB/day, then 128 Kbps Hotspot supported | 11 days |
2GB/day
then 128 Kbps
|
— | $1.02/day |
$11.21 $11.21
$10.09 |
|
| 25 | Unlimited 2GB/day, then 128 Kbps Hotspot supported | 12 days |
2GB/day
then 128 Kbps
|
— | $1.02/day |
$12.19 $12.19
$10.97 |
|
| 26 | 20GB Hotspot supported | 30 days | — | $0.63/GB | $0.42/day |
$12.90
-3%
$12.50 $12.50
$11.25 $0.63/GB
|
|
| 27 | Unlimited 2GB/day, then 128 Kbps Hotspot supported | 13 days |
2GB/day
then 128 Kbps
|
— | $1.00/day |
$13.04 $13.04
$11.74 |
|
| 28 | Unlimited Throttled to 384 Kbps after the high-speed allowance Hotspot supported | 6 days |
then 384 Kbps
|
— | $2.23/day |
$13.36 $13.36
$12.02 |
|
| 29 | Unlimited 2GB/day, then 128 Kbps Hotspot supported | 14 days |
2GB/day
then 128 Kbps
|
— | $1.00/day |
$14.05 $14.05
$12.65 |
|
| 30 | Unlimited 2GB/day, then 128 Kbps Hotspot supported | 15 days |
2GB/day
then 128 Kbps
|
— | $0.99/day |
$14.91 $14.91
$13.42 |
|
| 31 | Unlimited Throttled to 384 Kbps after the high-speed allowance Hotspot supported | 7 days |
then 384 Kbps
|
— | $2.21/day |
$15.50 $15.50
$13.95 |
|
| 32 | 30GB Hotspot supported | 30 days | — | $0.57/GB | $0.57/day |
$17.00 $17.00
$15.30 $0.57/GB
|
|
| 33 | Unlimited Throttled to 384 Kbps after the high-speed allowance Hotspot supported | 8 days |
then 384 Kbps
|
— | $2.21/day |
$17.64 $17.64
$15.88 |
|
| 34 | Unlimited Throttled to 384 Kbps after the high-speed allowance Hotspot supported | 9 days |
then 384 Kbps
|
— | $2.17/day |
$19.57 $19.57
$17.61 |
|
| 35 |
20GB
Hotspot supported
🌍 Regional
Also valid in: South Korea
|
30 days | — | $1.00/GB | $0.66/day |
$19.93 $19.93
$17.94 $1.00/GB
|
|
| 36 | Unlimited Throttled to 384 Kbps after the high-speed allowance Hotspot supported | 10 days |
then 384 Kbps
|
— | $2.17/day |
$21.71 $21.71
$19.54 |
|
| 37 | Unlimited Throttled to 384 Kbps after the high-speed allowance Hotspot supported | 11 days |
then 384 Kbps
|
— | $2.17/day |
$23.86 $23.86
$21.47 |
|
| 38 | Unlimited Throttled to 384 Kbps after the high-speed allowance Hotspot supported | 12 days |
then 384 Kbps
|
— | $2.17/day |
$26.00 $26.00
$23.40 |
|
| 40 | Unlimited Throttled to 384 Kbps after the high-speed allowance Hotspot supported | 13 days |
then 384 Kbps
|
— | $2.16/day |
$28.14 $28.14
$25.33 |
|
| 41 | Unlimited Throttled to 384 Kbps after the high-speed allowance Hotspot supported | 14 days |
then 384 Kbps
|
— | $2.16/day |
$30.29 $30.29
$27.26 |
|
| 42 | Unlimited Throttled to 384 Kbps after the high-speed allowance Hotspot supported | 15 days |
then 384 Kbps
|
— | $2.14/day |
$32.14 $32.14
$28.93 |
Other providers in Japan
Cheapest plan with 7+ days & 3GB+ (5GB+ from 15 days, 10GB+ from 180 days) from each provider, next to Billion Connect's $3.80. Compare any two in Japan side by side.
About Billion Connect
Fully verified 12 of 12 facts confirmed- Founded
- 2015
- Headquarters
- Hong Kong
- Legal entity
- WEITAIGE TECHNOLOGY CO., LIMITED
- Website
- billionconnect.net
- Refund policy
- Refundable before activation; once activated/used, refund rights end; third-party partner purchases are excluded from refunds.
- Validity starts
- Most plans start when the eSIM first connects to a supported network at your destination (some start on installation, as the product page states); activate within 90 days of purchase; a day = 24 hours from activation.
- Fair-use limit
- Set per plan on the product page: most plans drop to a reduced speed (typically 128–384 kbps) after the high-speed allowance, daily or total, instead of cutting off; a few plans stop at the limit.
- Top-ups & rollover
- Standard eSIMs can't be topped up; buy a new plan when data runs out. eSIM Air supports top-ups anytime without reinstalling.
- Lost device / reinstalling
- Most eSIMs can be reinstalled or moved to a new phone by rescanning the original QR code; plans marked non-reinstallable on the product page are lost once deleted.
- Billing currency
- Multi-currency checkout: USD, HKD, JPY, KRW, EUR, CNY, TWD, CAD, SGD, THB, MYR.
- Support
- Email · Help center
- Payment
- Card · PayPal
- ID verification
- Required for some countries (passport/ID)
Facts verified on Oct 8, 2026 from Billion Connect's own site
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