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SimSwift plans for Japan

2,743 live plans from 24 providers, ranked on what a gigabyte actually costs rather than on the sticker price. Checked 27 August 2026

Compare 2,743 plans →
$0.28 Lowest per GB Cheapest honest gigabyte here
$1.84 Median per GB Unlimited and fair-use excluded
$1.03–4.06 Typical band Where most plans land
52% Advertise 5G 85% allow hotspot

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We earn a commission on some links below. Commission carries zero weight in the ranking formula, which is published in full. Prices are indicative and the provider's own checkout is always authoritative.

Showing 120 of 2,743 plans

View offer: SimSwift, Japan 50GB 30Days 1 SimSwift Japan 50GB 30Days 50 GB 30 days 4G Japan only $26.99 $0.54 per GB
View offer: SimSwift, Japan 3GB 15Days 2 SimSwift Japan 3GB 15Days 3 GB 15 days 4G Japan only $3.49 $1.16 per GB
View offer: SimSwift, Japan 3GB 30Days 3 SimSwift Japan 3GB 30Days 3 GB 30 days 4G Japan only $3.49 $1.16 per GB
View offer: SimSwift, Japan 10GB 30Days 4 SimSwift Japan 10GB 30Days 10 GB 30 days 4G Japan only $7.99 $0.80 per GB
View offer: SimSwift, Japan 20GB 30Days 5 SimSwift Japan 20GB 30Days 20 GB 30 days 4G Japan only $13.99 $0.70 per GB
View offer: SimSwift, Japan 10GB/Day 6 SimSwift Japan 10GB/Day 10 GB/day 1 day 4G Japan only $7.99 $0.80 per GB
View offer: SimSwift, Japan 3GB/Day 7 SimSwift Japan 3GB/Day 3 GB/day 1 day 4G Japan only $3.99 $1.33 per GB
View offer: SimSwift, Japan 50GB 180Days 8 SimSwift Japan 50GB 180Days 50 GB 180 days 4G Japan only $43.99 $0.88 per GB
View offer: SimSwift, Japan 5GB 30Days 9 SimSwift Japan 5GB 30Days 5 GB 30 days 4G Japan only $4.99 $1.00 per GB
View offer: SimSwift, Japan 2GB/Day FUP1Mbps 10 SimSwift Japan 2GB/Day FUP1Mbps 2 GB/day 1 day 4G Japan only $2.99 $1.50 per GB
View offer: SimSwift, Japan 10GB/Day 11 SimSwift Japan 10GB/Day 10 GB/day 4 days 4G Japan only $31.96 $0.80 per GB
View offer: SimSwift, Japan 10GB/Day 12 SimSwift Japan 10GB/Day 10 GB/day 5 days 4G Japan only $39.95 $0.80 per GB
View offer: SimSwift, Japan 10GB/Day 13 SimSwift Japan 10GB/Day 10 GB/day 6 days 4G Japan only $47.94 $0.80 per GB
View offer: SimSwift, Japan 10GB/Day 14 SimSwift Japan 10GB/Day 10 GB/day 7 days 4G Japan only $55.93 $0.80 per GB
View offer: SimSwift, Japan 10GB/Day 15 SimSwift Japan 10GB/Day 10 GB/day 8 days 4G Japan only $63.92 $0.80 per GB
View offer: SimSwift, Japan 10GB/Day 16 SimSwift Japan 10GB/Day 10 GB/day 9 days 4G Japan only $71.91 $0.80 per GB
View offer: SimSwift, Japan 10GB/Day 17 SimSwift Japan 10GB/Day 10 GB/day 10 days 4G Japan only $79.90 $0.80 per GB
View offer: SimSwift, Japan 10GB/Day 18 SimSwift Japan 10GB/Day 10 GB/day 11 days 4G Japan only $87.89 $0.80 per GB
View offer: SimSwift, Japan 10GB/Day 19 SimSwift Japan 10GB/Day 10 GB/day 12 days 4G Japan only $95.88 $0.80 per GB
View offer: SimSwift, Japan 10GB/Day 20 SimSwift Japan 10GB/Day 10 GB/day 13 days 4G Japan only $103.87 $0.80 per GB
View offer: SimSwift, Japan 10GB/Day 21 SimSwift Japan 10GB/Day 10 GB/day 14 days 4G Japan only $111.86 $0.80 per GB
View offer: SimSwift, Japan 10GB/Day 22 SimSwift Japan 10GB/Day 10 GB/day 15 days 4G Japan only $119.85 $0.80 per GB
View offer: SimSwift, Japan 10GB/Day 23 SimSwift Japan 10GB/Day 10 GB/day 16 days 4G Japan only $127.84 $0.80 per GB
View offer: SimSwift, Japan 10GB/Day 24 SimSwift Japan 10GB/Day 10 GB/day 17 days 4G Japan only $135.83 $0.80 per GB
View offer: SimSwift, Japan 10GB/Day 25 SimSwift Japan 10GB/Day 10 GB/day 18 days 4G Japan only $143.82 $0.80 per GB
View offer: SimSwift, Japan 10GB/Day 26 SimSwift Japan 10GB/Day 10 GB/day 19 days 4G Japan only $151.81 $0.80 per GB
View offer: SimSwift, Japan 10GB/Day 27 SimSwift Japan 10GB/Day 10 GB/day 20 days 4G Japan only $159.80 $0.80 per GB
View offer: SimSwift, Japan 10GB/Day 28 SimSwift Japan 10GB/Day 10 GB/day 21 days 4G Japan only $167.79 $0.80 per GB
View offer: SimSwift, Japan 10GB/Day 29 SimSwift Japan 10GB/Day 10 GB/day 22 days 4G Japan only $175.78 $0.80 per GB
View offer: SimSwift, Japan 10GB/Day 30 SimSwift Japan 10GB/Day 10 GB/day 23 days 4G Japan only $183.77 $0.80 per GB
View offer: SimSwift, Japan 10GB/Day 31 SimSwift Japan 10GB/Day 10 GB/day 24 days 4G Japan only $191.76 $0.80 per GB
View offer: SimSwift, Japan 10GB/Day 32 SimSwift Japan 10GB/Day 10 GB/day 25 days 4G Japan only $199.75 $0.80 per GB
View offer: SimSwift, Japan 10GB/Day 33 SimSwift Japan 10GB/Day 10 GB/day 26 days 4G Japan only $207.74 $0.80 per GB
View offer: SimSwift, Japan 10GB/Day 34 SimSwift Japan 10GB/Day 10 GB/day 27 days 4G Japan only $215.73 $0.80 per GB
View offer: SimSwift, Japan 10GB/Day 35 SimSwift Japan 10GB/Day 10 GB/day 28 days 4G Japan only $223.72 $0.80 per GB
View offer: SimSwift, Japan 10GB/Day 36 SimSwift Japan 10GB/Day 10 GB/day 29 days 4G Japan only $231.71 $0.80 per GB
View offer: SimSwift, Japan 10GB/Day 37 SimSwift Japan 10GB/Day 10 GB/day 30 days 4G Japan only $239.70 $0.80 per GB
View offer: SimSwift, Japan 1GB 7Days 38 SimSwift Japan 1GB 7Days 1 GB 7 days 4G Japan only $1.99 $1.99 per GB
View offer: SimSwift, Japan 10GB/Day 39 SimSwift Japan 10GB/Day 10 GB/day 2 days 4G Japan only $15.98 $0.80 per GB
View offer: SimSwift, Japan 10GB/Day 40 SimSwift Japan 10GB/Day 10 GB/day 3 days 4G Japan only $23.97 $0.80 per GB
View offer: SimSwift, Japan 1GB/Day FUP1Mbps 41 SimSwift Japan 1GB/Day FUP1Mbps 1 GB/day 1 day 4G Japan only $1.99 $1.99 per GB
View offer: SimSwift, Japan 1GB/Day FUP1Mbps 42 SimSwift Japan 1GB/Day FUP1Mbps 1 GB/day 2 days 4G Japan only $3.98 $1.99 per GB
View offer: SimSwift, Japan 1GB/Day FUP1Mbps 43 SimSwift Japan 1GB/Day FUP1Mbps 1 GB/day 3 days 4G Japan only $5.97 $1.99 per GB
View offer: SimSwift, Japan 5GB/Day 44 SimSwift Japan 5GB/Day 5 GB/day 1 day 4G Japan only $5.99 $1.20 per GB
View offer: SimSwift, Japan 5GB/Day 45 SimSwift Japan 5GB/Day 5 GB/day 2 days 4G Japan only $11.98 $1.20 per GB
View offer: SimSwift, Japan 5GB/Day 46 SimSwift Japan 5GB/Day 5 GB/day 7 days 4G Japan only $41.93 $1.20 per GB
View offer: SimSwift, Japan 5GB/Day 47 SimSwift Japan 5GB/Day 5 GB/day 8 days 4G Japan only $47.92 $1.20 per GB
View offer: SimSwift, Japan 5GB/Day 48 SimSwift Japan 5GB/Day 5 GB/day 9 days 4G Japan only $53.91 $1.20 per GB
View offer: SimSwift, Japan 5GB/Day 49 SimSwift Japan 5GB/Day 5 GB/day 10 days 4G Japan only $59.90 $1.20 per GB
View offer: SimSwift, Japan 5GB/Day 50 SimSwift Japan 5GB/Day 5 GB/day 11 days 4G Japan only $65.89 $1.20 per GB
View offer: SimSwift, Japan 5GB/Day 51 SimSwift Japan 5GB/Day 5 GB/day 12 days 4G Japan only $71.88 $1.20 per GB
View offer: SimSwift, Japan 5GB/Day 52 SimSwift Japan 5GB/Day 5 GB/day 13 days 4G Japan only $77.87 $1.20 per GB
View offer: SimSwift, Japan 5GB/Day 53 SimSwift Japan 5GB/Day 5 GB/day 14 days 4G Japan only $83.86 $1.20 per GB
View offer: SimSwift, Japan 5GB/Day 54 SimSwift Japan 5GB/Day 5 GB/day 15 days 4G Japan only $89.85 $1.20 per GB
View offer: SimSwift, Japan 5GB/Day 55 SimSwift Japan 5GB/Day 5 GB/day 16 days 4G Japan only $95.84 $1.20 per GB
View offer: SimSwift, Japan 5GB/Day 56 SimSwift Japan 5GB/Day 5 GB/day 17 days 4G Japan only $101.83 $1.20 per GB
View offer: SimSwift, Japan 5GB/Day 57 SimSwift Japan 5GB/Day 5 GB/day 18 days 4G Japan only $107.82 $1.20 per GB
View offer: SimSwift, Japan 5GB/Day 58 SimSwift Japan 5GB/Day 5 GB/day 19 days 4G Japan only $113.81 $1.20 per GB
View offer: SimSwift, Japan 5GB/Day 59 SimSwift Japan 5GB/Day 5 GB/day 20 days 4G Japan only $119.80 $1.20 per GB
View offer: SimSwift, Japan 5GB/Day 60 SimSwift Japan 5GB/Day 5 GB/day 21 days 4G Japan only $125.79 $1.20 per GB
View offer: SimSwift, Japan 5GB/Day 61 SimSwift Japan 5GB/Day 5 GB/day 22 days 4G Japan only $131.78 $1.20 per GB
View offer: SimSwift, Japan 5GB/Day 62 SimSwift Japan 5GB/Day 5 GB/day 23 days 4G Japan only $137.77 $1.20 per GB
View offer: SimSwift, Japan 5GB/Day 63 SimSwift Japan 5GB/Day 5 GB/day 24 days 4G Japan only $143.76 $1.20 per GB
View offer: SimSwift, Japan 5GB/Day 64 SimSwift Japan 5GB/Day 5 GB/day 25 days 4G Japan only $149.75 $1.20 per GB
View offer: SimSwift, Japan 5GB/Day 65 SimSwift Japan 5GB/Day 5 GB/day 26 days 4G Japan only $155.74 $1.20 per GB
View offer: SimSwift, Japan 5GB/Day 66 SimSwift Japan 5GB/Day 5 GB/day 27 days 4G Japan only $161.73 $1.20 per GB
View offer: SimSwift, Japan 5GB/Day 67 SimSwift Japan 5GB/Day 5 GB/day 28 days 4G Japan only $167.72 $1.20 per GB
View offer: SimSwift, Japan 5GB/Day 68 SimSwift Japan 5GB/Day 5 GB/day 29 days 4G Japan only $173.71 $1.20 per GB
View offer: SimSwift, Japan 5GB/Day 69 SimSwift Japan 5GB/Day 5 GB/day 30 days 4G Japan only $179.70 $1.20 per GB
View offer: SimSwift, Japan 3GB/Day 70 SimSwift Japan 3GB/Day 3 GB/day 2 days 4G Japan only $7.98 $1.33 per GB
View offer: SimSwift, Japan 3GB/Day 71 SimSwift Japan 3GB/Day 3 GB/day 3 days 4G Japan only $11.97 $1.33 per GB
View offer: SimSwift, Japan 5GB/Day 72 SimSwift Japan 5GB/Day 5 GB/day 3 days 4G Japan only $17.97 $1.20 per GB
View offer: SimSwift, Japan 5GB/Day 73 SimSwift Japan 5GB/Day 5 GB/day 4 days 4G Japan only $23.96 $1.20 per GB
View offer: SimSwift, Japan 5GB/Day 74 SimSwift Japan 5GB/Day 5 GB/day 5 days 4G Japan only $29.95 $1.20 per GB
View offer: SimSwift, Japan 5GB/Day 75 SimSwift Japan 5GB/Day 5 GB/day 6 days 4G Japan only $35.94 $1.20 per GB
View offer: SimSwift, Japan 3GB/Day 76 SimSwift Japan 3GB/Day 3 GB/day 11 days 4G Japan only $43.89 $1.33 per GB
View offer: SimSwift, Japan 3GB/Day 77 SimSwift Japan 3GB/Day 3 GB/day 12 days 4G Japan only $47.88 $1.33 per GB
View offer: SimSwift, Japan 3GB/Day 78 SimSwift Japan 3GB/Day 3 GB/day 13 days 4G Japan only $51.87 $1.33 per GB
View offer: SimSwift, Japan 3GB/Day 79 SimSwift Japan 3GB/Day 3 GB/day 14 days 4G Japan only $55.86 $1.33 per GB
View offer: SimSwift, Japan 3GB/Day 80 SimSwift Japan 3GB/Day 3 GB/day 15 days 4G Japan only $59.85 $1.33 per GB
View offer: SimSwift, Japan 3GB/Day 81 SimSwift Japan 3GB/Day 3 GB/day 16 days 4G Japan only $63.84 $1.33 per GB
View offer: SimSwift, Japan 3GB/Day 82 SimSwift Japan 3GB/Day 3 GB/day 17 days 4G Japan only $67.83 $1.33 per GB
View offer: SimSwift, Japan 3GB/Day 83 SimSwift Japan 3GB/Day 3 GB/day 18 days 4G Japan only $71.82 $1.33 per GB
View offer: SimSwift, Japan 3GB/Day 84 SimSwift Japan 3GB/Day 3 GB/day 19 days 4G Japan only $75.81 $1.33 per GB
View offer: SimSwift, Japan 3GB/Day 85 SimSwift Japan 3GB/Day 3 GB/day 20 days 4G Japan only $79.80 $1.33 per GB
View offer: SimSwift, Japan 3GB/Day 86 SimSwift Japan 3GB/Day 3 GB/day 21 days 4G Japan only $83.79 $1.33 per GB
View offer: SimSwift, Japan 3GB/Day 87 SimSwift Japan 3GB/Day 3 GB/day 22 days 4G Japan only $87.78 $1.33 per GB
View offer: SimSwift, Japan 3GB/Day 88 SimSwift Japan 3GB/Day 3 GB/day 23 days 4G Japan only $91.77 $1.33 per GB
View offer: SimSwift, Japan 3GB/Day 89 SimSwift Japan 3GB/Day 3 GB/day 24 days 4G Japan only $95.76 $1.33 per GB
View offer: SimSwift, Japan 3GB/Day 90 SimSwift Japan 3GB/Day 3 GB/day 25 days 4G Japan only $99.75 $1.33 per GB
View offer: SimSwift, Japan 3GB/Day 91 SimSwift Japan 3GB/Day 3 GB/day 26 days 4G Japan only $103.74 $1.33 per GB
View offer: SimSwift, Japan 3GB/Day 92 SimSwift Japan 3GB/Day 3 GB/day 27 days 4G Japan only $107.73 $1.33 per GB
View offer: SimSwift, Japan 3GB/Day 93 SimSwift Japan 3GB/Day 3 GB/day 28 days 4G Japan only $111.72 $1.33 per GB
View offer: SimSwift, Japan 3GB/Day 94 SimSwift Japan 3GB/Day 3 GB/day 29 days 4G Japan only $115.71 $1.33 per GB
View offer: SimSwift, Japan 3GB/Day 95 SimSwift Japan 3GB/Day 3 GB/day 30 days 4G Japan only $119.70 $1.33 per GB
View offer: SimSwift, Japan 2GB/Day FUP1Mbps 96 SimSwift Japan 2GB/Day FUP1Mbps 2 GB/day 2 days 4G Japan only $5.98 $1.50 per GB
View offer: SimSwift, Japan 2GB/Day FUP1Mbps 97 SimSwift Japan 2GB/Day FUP1Mbps 2 GB/day 3 days 4G Japan only $8.97 $1.50 per GB
View offer: SimSwift, Japan 2GB/Day FUP1Mbps 98 SimSwift Japan 2GB/Day FUP1Mbps 2 GB/day 4 days 4G Japan only $11.96 $1.50 per GB
View offer: SimSwift, Japan 2GB/Day FUP1Mbps 99 SimSwift Japan 2GB/Day FUP1Mbps 2 GB/day 5 days 4G Japan only $14.95 $1.50 per GB
View offer: SimSwift, Japan 3GB/Day 100 SimSwift Japan 3GB/Day 3 GB/day 4 days 4G Japan only $15.96 $1.33 per GB
View offer: SimSwift, Japan 3GB/Day 101 SimSwift Japan 3GB/Day 3 GB/day 5 days 4G Japan only $19.95 $1.33 per GB
View offer: SimSwift, Japan 3GB/Day 102 SimSwift Japan 3GB/Day 3 GB/day 6 days 4G Japan only $23.94 $1.33 per GB
View offer: SimSwift, Japan 3GB/Day 103 SimSwift Japan 3GB/Day 3 GB/day 7 days 4G Japan only $27.93 $1.33 per GB
View offer: SimSwift, Japan 3GB/Day 104 SimSwift Japan 3GB/Day 3 GB/day 8 days 4G Japan only $31.92 $1.33 per GB
View offer: SimSwift, Japan 3GB/Day 105 SimSwift Japan 3GB/Day 3 GB/day 9 days 4G Japan only $35.91 $1.33 per GB
View offer: SimSwift, Japan 3GB/Day 106 SimSwift Japan 3GB/Day 3 GB/day 10 days 4G Japan only $39.90 $1.33 per GB
View offer: SimSwift, Japan 2GB/Day FUP1Mbps 107 SimSwift Japan 2GB/Day FUP1Mbps 2 GB/day 6 days 4G Japan only $17.94 $1.50 per GB
View offer: SimSwift, Japan 2GB/Day FUP1Mbps 108 SimSwift Japan 2GB/Day FUP1Mbps 2 GB/day 7 days 4G Japan only $20.93 $1.50 per GB
View offer: SimSwift, Japan 2GB/Day FUP1Mbps 109 SimSwift Japan 2GB/Day FUP1Mbps 2 GB/day 8 days 4G Japan only $23.92 $1.50 per GB
View offer: SimSwift, Japan 2GB/Day FUP1Mbps 110 SimSwift Japan 2GB/Day FUP1Mbps 2 GB/day 9 days 4G Japan only $26.91 $1.50 per GB
View offer: SimSwift, Japan 2GB/Day FUP1Mbps 111 SimSwift Japan 2GB/Day FUP1Mbps 2 GB/day 10 days 4G Japan only $29.90 $1.50 per GB
View offer: SimSwift, Japan 2GB/Day FUP1Mbps 112 SimSwift Japan 2GB/Day FUP1Mbps 2 GB/day 11 days 4G Japan only $32.89 $1.50 per GB
View offer: SimSwift, Japan 2GB/Day FUP1Mbps 113 SimSwift Japan 2GB/Day FUP1Mbps 2 GB/day 12 days 4G Japan only $35.88 $1.50 per GB
View offer: SimSwift, Japan 2GB/Day FUP1Mbps 114 SimSwift Japan 2GB/Day FUP1Mbps 2 GB/day 13 days 4G Japan only $38.87 $1.50 per GB
View offer: SimSwift, Japan 2GB/Day FUP1Mbps 115 SimSwift Japan 2GB/Day FUP1Mbps 2 GB/day 14 days 4G Japan only $41.86 $1.50 per GB
View offer: SimSwift, Japan 2GB/Day FUP1Mbps 116 SimSwift Japan 2GB/Day FUP1Mbps 2 GB/day 15 days 4G Japan only $44.85 $1.50 per GB
View offer: SimSwift, China mainland & Japan & South Kore 117 SimSwift China mainland & Japan & South Kore 3 GB 15 days 4G +2 more countries $9.49 $3.16 per GB
View offer: SimSwift, China mainland & Japan & South Kore 118 SimSwift China mainland & Japan & South Kore 3 GB 30 days 4G +2 more countries $9.49 $3.16 per GB
View offer: SimSwift, Japan 2GB/Day FUP1Mbps 119 SimSwift Japan 2GB/Day FUP1Mbps 2 GB/day 16 days 4G Japan only $47.84 $1.50 per GB
View offer: SimSwift, Japan 2GB/Day FUP1Mbps 120 SimSwift Japan 2GB/Day FUP1Mbps 2 GB/day 17 days 4G Japan only $50.83 $1.50 per GB
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