1
990円 /月
総合スコア: 86.08
Compare 1GB SIM Plans
Plans for users who primarily use Wi-Fi and need minimal mobile data. Starting from just a few hundred yen per month — the most affordable SIM category available.
From ~¥300/mo ~100K LINE messages/mo ~3-4hrs YouTube/mo Perfect for secondary SIM
20 plans found
2
440円 /月
総合スコア: 85.83
3
528円 /月
総合スコア: 85.29
990円 /月
総合スコア: 85.13
650円 /月
総合スコア: 84.54
748円 /月
総合スコア: 83.94
290円 /月
総合スコア: 83.75
1,380円 /月
総合スコア: 83.69
792円 /月
総合スコア: 83.67
850円 /月
総合スコア: 83.32
858円 /月
総合スコア: 83.27
858円 /月
総合スコア: 83.27
950円 /月
総合スコア: 82.7
990円 /月
総合スコア: 82.46
550円 /月
総合スコア: 82.16
1,050円 /月
総合スコア: 82.09
1,078円 /月
総合スコア: 81.92
1,078円 /月
総合スコア: 81.92
2,167円 /月
総合スコア: 81.25
1,078円 /月
総合スコア: 81.17
FAQ
How much video can I watch with 1GB per month?
At standard quality (480p) on YouTube, you can watch approximately 3–4 hours of video. At 720p, that drops to around 1–2 hours. If video streaming is a priority, consider upgrading to a 3GB or higher plan. A 1GB plan is better suited for users who primarily watch videos at home over Wi-Fi.
Who is a 1GB SIM plan best suited for?
This plan is ideal for people who primarily use Wi-Fi at home, work, or school, and only need mobile data occasionally. It also works well as a secondary SIM for smartwatches or tablets, or as a voice-only line where the goal is to minimize monthly costs.
What happens after I use up my 1GB?
Most plans throttle your speed to around 200–300kbps once you reach the 1GB limit. At this speed, basic tasks like LINE messages and map loading still work, but video streaming and large downloads become impractical. Many providers allow you to purchase additional data, so check the terms before signing up.