Recommended Ranking of Prepaid SIMs Available at Convenience Stores 2026

Prepaid SIM cards that are easy to use without identity verification or credit cards. Due to their high convenience, many services such as HIS Mobile and IIJmio offer them. Especially, prepaid SIMs available at convenience stores are very useful for urgent needs.

Many people may be unsure how to choose, such as “Which prepaid SIM can I get immediately at a convenience store?” or “Which products are suitable for long-term use?”

This time, we thoroughly examine 14 popular prepaid SIMs on the market from four perspectives: cost, communication speed, ease of use, and availability. We will present a ranking to help you choose the prepaid SIM that best fits your needs.

How to Choose a Prepaid SIM Available at Convenience Stores

Here are three key points to consider when selecting a prepaid SIM.

Point 1: Choose by purchase channel
Prepaid SIMs that can be purchased immediately at convenience stores are limited. If you want to buy easily at Lawson, Mini Stop, etc., or if you don’t mind pre-ordering via e-commerce sites, your options differ greatly.

Point 2: Select a plan suited to your usage
The combination of data capacity and usage period is crucial. Whether you use it daily, for short-term return trips, or for a secondary device, the optimal prepaid SIM varies accordingly.

Point 3: Balance between communication quality and price
MVNO lines tend to have fluctuating speeds depending on the time of day. Services using SoftBank’s direct line generally offer more stable performance.

Comparison of 14 Selected Prepaid SIMs and Evaluation Criteria

In our review, we examined each service in detail based on four points:

• Cost: Compared three patterns—50GB for 1-3 months, 10GB for 1 month, and 30GB for 6 months to 1 year.
• Speed: Measured actual speeds in urban and suburban areas during daytime and evening hours.
• Ease of start-up: Evaluated APN setup, Wi-Fi connection requirements, and initial configuration complexity.
• Availability: Checked the sales channels such as convenience stores, drugstores, e-commerce sites, etc.

Recommended Prepaid SIM Rankings

【1st Place】HIS Mobile Prepaid SIM (H.I.S. Mobile)

Overall Score: 4.47

Ideal for users who want unlimited data. Perfect for daily use.

H.I.S. Mobile’s prepaid SIM is highly recommended for everyday users. It uses Docomo network and offers a 30-day unlimited data plan for just 3,512 yen, which is very affordable. This is a very attractive price point.

Since you don’t need to worry about data limits, it’s perfect for users who stream videos frequently. The 6-month, 30GB plan is also reasonably priced at 4,846 yen, making it a good option for long-term use.

Speed varies slightly depending on the time of day. During daytime in urban areas, speeds drop slightly to 6.6 Mbps, but at other times, browsing, SNS, and high-quality videos (720p) are comfortably supported. If you can tolerate some slowdown during busy hours, you won’t be disappointed with the overall experience.

Initial setup requires APN configuration, but following the included instructions makes it straightforward. Note that it’s not available at convenience stores; only through online or official channels, so it’s recommended to order with some lead time.

Pros:

• Unlimited data plan at an extremely low price of 3,512 yen
• Stable high-speed connection outside congestion times
• 6-month plans are also very affordable

Cons:

• Not available at physical retail stores
• Initial APN setup required

【2nd Place】Nippon SIM for Japan (DHA Corporation)

Overall Score: 4.47

Cost-effective large-capacity plans. Ready to use immediately.

DHA’s prepaid SIM is a cost-efficient choice suitable for various users. It uses Docomo network and offers a 50GB plan for 30 days at 4,480 yen. Even if you exhaust the data, you can continue using the service at 128 kbps within 30 days, which is a big advantage.

Prices are reasonable: 50GB for 30 days at 4,480 yen, 30GB for 6 months at 4,980 yen, and 10GB for 2,480 yen. It caters well to daily use, short-term trips, or secondary devices.

No complicated procedures are needed to start—just insert the SIM and it’s ready. Available at electronics stores and online, so you can start using it on the same day.

Speeds are over 80 Mbps from late morning to evening, allowing smooth streaming of large videos. However, speeds tend to decrease during the day, so be aware of potential fluctuations.

A great choice for those seeking large capacity at a low price with easy start-up.

Pros:

• All plans are cheaper than industry average
• No pre-setup required, ready to use immediately
• Available at electronics stores for same-day use

Cons:

• Slight speed reduction during daytime

【3rd Place】Prepaid SIM Dot Com (Mobile Planning)

Overall Score: 4.22

Industry-low prices for large data plans. 24-hour top-up support.

Mobile Planning’s prepaid SIM is suitable for regular users. It offers 50GB for 31 days at 4,580 yen, using Docomo network, ideal for browsing and SNS.

A notable feature is the 24-hour online top-up function, allowing you to add data anytime if needed, making it suitable for continuous use.

APN setup is required, but unlike many others, it can connect without Wi-Fi, which is convenient.

Speeds are over 170 Mbps in urban and suburban areas during evenings, maintaining high performance. However, during daytime in urban areas, speeds may be slightly lower, which could affect high-quality video viewing.

At 4,580 yen for 50GB, it’s one of the cheapest options among similar plans, perfect for long-term daily use.

Available only online, so early ordering is recommended. Not suitable for urgent needs but excellent for cost-conscious users.

Pros:

• 50GB for 4,580 yen, industry’s lowest price
• 24-hour top-up support
• Can connect directly without Wi-Fi setup

Cons:

• Speeds drop during busy daytime hours
• Only sold online

【4th Place】Prepaid SIM Dot Com eSIM (Mobile Planning)

Overall Score: 4.12

Easy-to-use eSIM with large data plans. Ideal for short-term return trips.

This eSIM version is recommended for users planning short-term visits or travel. Since it’s embedded in the device, there’s no risk of loss or damage.

Using Docomo’s network, it offers 50GB for 31 days. Speeds are generally stable even during daytime, with smooth browsing and SNS use. High-quality videos (720p) are comfortably viewable.

Setup requires Wi-Fi, but no phone calls or complicated procedures—just download and activate. It’s very user-friendly.

The 10GB plan costs 2,980 yen, making it affordable. Suitable for users returning temporarily from abroad.

However, the 50GB plan at 4,980 yen is more standard-priced. Since it’s an eSIM, it’s especially good for travelers or those who want a hassle-free experience.

Available only online, so plan ahead for purchase.

Pros:

• No risk of loss or damage with eSIM
• Low-cost 10GB plan
• No setup needed, just download and use

Cons:

• Not available for immediate use at stores
• 50GB plan is relatively standard in price

【5th Place】IIJmio JAPAN TRAVEL SIM (Internet Initiative)

Overall Score: 4.06

Convenience of in-store purchase is a major advantage, but prices are higher.

IIJmio’s prepaid SIM can be bought at convenience stores like Lawson, Mini Stop, and increasingly at drugstores and Don Quijote, making it very convenient.

Uses Docomo network, with plans from 3GB to 55GB. You can top up within 30 days if data runs out, which is handy.

It’s the only product that can be purchased at convenience stores and Don Quijote, with eSIM registration completed in 5-10 minutes. Also available at electronics and online stores.

However, prices are relatively high: 3,280 yen for 10GB, 5,780 yen for 50GB. Not ideal if you want to minimize costs.

Speeds are good from late morning to evening, but in suburban areas during the day, speeds can drop significantly, even to the point of websites not loading. Be aware of large fluctuations.

Best suited for users who prioritize convenience and can accept higher prices.

Pros:

• Purchase at convenience stores and online, with quick eSIM registration
• Can top up data easily
• Widely available

Cons:

• Higher prices compared to competitors
• Speed fluctuations depending on location and time

【6th Place】JAPAN PREPAID SIM (Parrot Beak)

Overall Score: 3.78

Prioritizes stable, fast speeds regardless of time.

Parrot Beak’s SIM uses SoftBank’s direct line, ensuring stable and fast speeds even during busy hours. It’s ideal for users who need consistent performance.

Speeds remain high during daytime and evening, with no significant slowdown, suitable for high-quality video and browsing.

10GB at 2,380 yen and 30GB at 4,480 yen are the cheapest among comparable options, good for short-term trips or secondary devices.

50GB at 6,480 yen is more expensive, less suitable for daily heavy use.

Available only online, with no immediate purchase option at stores. No setup calls needed—just insert and go.

Best for users who need reliable, fast speeds and are okay with ordering online.

Pros:

• Stable speeds at all times
• No setup required, just insert
• 10GB and 30GB plans are very affordable

Cons:

• 50GB plan is costly for daily use
• Only sold online

【7th Place】JAPAN PREPAID SIM CARD (DXHUB)

Overall Score: 3.71

Low initial cost, but speeds need improvement.

DXHUB’s SIM offers low upfront costs, using Docomo network. The 10GB plan at 2,780 yen is affordable, with data top-up available.

50GB for 180 days costs 7,880 yen, which is on the higher side.

Speed tests show slow speeds across all times, with no time slot exceeding 10 Mbps. In suburban areas during the day, speeds can be as low as 0.9 Mbps, making browsing slow.

Only available online, with no immediate purchase at stores. No activation calls needed, just insert and use.

Suitable for users who don’t need high speeds and want to keep costs low, but not for urgent or heavy daily use.

Pros:

• 50GB plan at a reasonable price
• Data top-up available

Cons:

• Very slow speeds, especially during busy times
• Only online sales

【8th Place】calendar-world Prepaid SIM (calendar-world)

Overall Score: 3.68

Long-term use with low capacity plans. Good for speed-focused users.

Calendar-world’s SIM offers stable, fast speeds, suitable for secondary devices. It supports 5G on Rakuten network, with a validity of 12 months.

Plans are 3GB/month, 7GB/month, and 30GB/month, with prices starting at 6,060 yen for 3GB. It’s the cheapest among Rakuten-based options.

Speeds are high across all times, even during busy hours, outperforming other Rakuten SIMs.

Available only online, requiring pre-order. No setup calls needed—just insert and activate. Supports SMS, so LINE can be used.

No 50GB plan available; only fixed monthly capacities.

Ideal for long-term, low-cost, fast-speed secondary SIMs.

Pros:

• Consistently high speeds
• No setup needed, just insert
• SMS supported

Cons:

• No large capacity plans like 50GB
• Only available online

【9th Place】HUAWEI-minwifi SIM (Micro Innovation)

Overall Score: 3.60

Economical for low data needs. Basic speed levels.

Micro Innovation’s SIM is the second cheapest among Rakuten-based options. The 3GB/month for 12 months at 6,120 yen is suitable for long-term secondary device use.

Speeds are slightly reduced during peak hours but generally sufficient for browsing and SNS. In suburban areas during the day, speeds can be as low as 0.9 Mbps, which may affect usability.

Only sold online, with no immediate purchase at stores. No activation calls needed—just insert and use.

Limited to 3GB or 30GB plans; no large capacity options like 50GB.

Good for users who need a low-cost, long-term secondary SIM.

Pros:

• 3GB for 12 months at a reasonable price
• Adequate for browsing and SNS
• Easy to use, no setup calls

Cons:

• Slow speeds during busy times
• Only online sales
• No large capacity plans

【10th Place】various label Prepaid SIM (Various Label)

Overall Score: 3.56

Flexible with multiple capacities but relatively expensive. Not ideal for daily heavy use.

Various Label’s SIM supports SMS, so LINE and other apps requiring SMS verification work.

Plans are 3GB, 7GB, and 30GB per month, with a 13-month validity. The 30GB plan costs 7,860 yen, which is high compared to others.

Speeds are around 2 Mbps in urban daytime, which may be insufficient for heavy browsing, but acceptable for light SNS use. Speeds fluctuate significantly depending on location and time.

Only sold online, requiring pre-order. No setup calls—just insert and activate.

Best suited for users who want flexible plans but are okay with higher costs and variable speeds.

Pros:

• Easy to use, no setup needed
• Supports SMS for LINE
• Wide product lineup

Cons:

• Speed varies greatly by location/time
• Only online sales
• Higher prices for similar capacities

Final Checklist for Choosing a Prepaid SIM

To avoid mistakes, consider these three points:

If convenience store purchase is a priority:
IIJmio JAPAN TRAVEL SIM is available at convenience stores, drugstores, and Don Quijote, making it a strong emergency choice.

If cost is the main concern:
HIS Mobile’s unlimited plan at 3,512 yen or JAPAN PREPAID SIM’s 10GB plan at 2,380 yen are the lowest in the industry. They are top options for minimizing monthly expenses.

If communication quality is most important:
Services using SoftBank’s direct line, like JAPAN PREPAID SIM (Parrot Beak), or stable-speed Rakuten SIMs like calendar-world, are recommended for reliable, high-speed performance.

Choose the best prepaid SIM based on your priorities.