Registration opens on July 17, 2026!
Even if you're alone, and even without a net set, it's a great deal.
With "Simple3 M /L," you'll receive a 1,100 yen (tax included) discount on your monthly fee for 12 months starting from the month following your subscription.
This offer cannot be combined with the following campaigns. The following campaigns will take precedence. Please note that periods during which this campaign's discount is not applied will also be counted as part of the discount application period.
• Home Bundle Discount Hikari Set (A) • Home Bundle Discount Hikari Set (A) Application Benefits • Family Discount Service • Home Internet Discount Set (E)
*Corporate contracts are not eligible.
Cho-Otokuwari（Super Value Discount）applicable - PayPay Gold Card
(Annual fee of 11,000 yen)
For 12 months, starting the next month 2,280 yen/month (excluding tax)
(¥2,508/month)
14 months or more: ¥3,280 (¥3,608) per month (excluding tax)
Call charges and device fees are charged separately
Discount details
Basic fee
3,980 yen (4,378 yen excluding tax)
Cho-Otokuwari（Super Value Discount）※1 Automatically applied for 12 months
Tax-excluded-1,000 yen (-1,100 yen)
PayPay Gold Card
Payment of communication charges
Tax-excluded-700 yen (-770 yen)
PayPay Card Discount *2 (Gold) - 550 yen
PayPay Card Discount Bonus *3 (Gold) - 220 yen
Call charges
22yen /30seconds
*Some calls may be excluded.
Cho-Otokuwari（Super Value Discount）applicable - PayPay Gold Card
(Annual fee of 11,000 yen)
For 12 months, starting the next month 3,280 yen/month (excluding tax)
(3,608 yen/month)
14 months or more: ¥4,280 (¥4,708) per month (excluding tax)
Call charges and device fees are charged separately
Discount details
Basic fee
4,980 yen (5,478 yen excluding tax)
Cho-Otokuwari（Super Value Discount）※1 Automatically applied for 12 months
Tax-excluded-1,000 yen (-1,100 yen)
PayPay Gold Card
Payment of communication charges
Tax-excluded-700 yen (-770 yen)
PayPay Card Discount *2 (Gold) - 550 yen
PayPay Card Discount Bonus *3 (Gold) - 220 yen
Call charges
10 minutes of unlimited domestic calls
*Some calls are excluded. For domestic calls exceeding 10 minutes per call, a separate charge of 22 yen per 30 seconds will apply to the portion exceeding 10 minutes.
This offer cannot be combined with the following campaigns. The following campaigns will take precedence. Please note that periods during which this campaign's discount is not applied will also be counted as part of the discount application period.
• Home Bundle Discount Hikari Set (A) • Home Bundle Discount Hikari Set (A) Application Benefits • Family Discount Service • Home Internet Discount Set (E)
*Corporate contracts are not eligible.
*1 Not applicable to Simple3 S The effect will be applied from the month following your application.
*2 Basic fee must be paid with PayPay Card/PayPay Card Gold.
*3 This offer cannot be used in conjunction with "Simple 3 Special Discount" or "Simple 3 Special Discount (Parent-Child Discount)".
[Other important information]
●Contract month: If the contract is made in the middle of the month, the basic fee will be calculated on a pro-rata basis.
●Cancellation month: Even if you cancel in the middle of the month, the full basic fee will be charged (it will not be prorated).
●Domestic calls cost 22 yen per 30 seconds.
●With Simple3 L, you can make domestic calls of up to 10 minutes per call to mobile phones and landlines (including IP phones) at no additional charge.
We reserve the right to disconnect calls that we deem to be excessively long.
If a customer who has signed up for a new contract or switched carriers (MNP/number transfer) requests to cancel their line within 12 months of the start of line service, a contract termination fee will be charged depending on Price Plan at the time of cancellation.
Simple3 S /M: 858 yen, Simple3 L: 1,100 yen
When you subscribe to Simple3 L, you can use "Voicemail Plus," "Fixed Amount Stop Service," "Call Waiting," and "Group Calling" at no additional charge.
Each service requires a separate application.
If you switch to Simple3 S /M plan while using any of the services, the monthly fee for each service will be charged from the following month. If you do not wish to use the service, you will need to cancel it separately.
● Some calls are excluded, such as international roaming, international calls (calls to overseas destinations), calls to satellite phones, calls to phone numbers with rates set by other companies (e.g., 0570), and directory assistance (104). Calls to NTT Docomo's satellite phone service (WideStar) will cost 177.1 yen per 30 seconds.
●Domestic SMS messages cost between 3.3 and 33 yen per message, depending on the number of characters sent. Please refer to our terms and conditions for details.
● A contract processing fee will be charged (in-store: 4,950 yen, online: 3,850 yen).
Telephone universal service fee, telephone relay service fee, and broadband universal service fee will be charged separately.
●If you wish to use the answering machine service, you will need to subscribe to Answering Machine Plus separately.
●If your data usage for the current month exceeds the sum of your standard data allowance (5GB/30GB/35GB) and the data allowance added by Extra Data Option (only for subscribers of Extra Data Option; 2GB/5GB/5GB), your data communication speed will be reduced until the end of the month (for both sending and receiving, a maximum of 300kbps for Simple3 S and 1Mbps for Simple3 M /L). Furthermore, if you consume half of your standard data allowance (2.5GB/15GB/17.5GB), your data communication speed will be reduced until the end of the month (for both sending and receiving, a maximum of 128kbps).
●Some calls are not covered, such as international roaming, international calls (calls to overseas), calls to satellite phones, calls to the answering machine center (1416 when playing back, etc.), calls to forwarding numbers in call forwarding services, Navidial (0570), directory assistance (104), and telephone numbers designated by our company and published separately (ymobile.jp/r/telephone/).
●If we determine that a call is an unauthorized long-term call, we may disconnect the call.
●If you change your plan to an ineligible Price Plan, this option will be automatically canceled.
●If we determine that you have made any of the following calls, we will terminate this service or suspend use of the calls in question on a date specified by us.
- Connecting the phone to any device or facility without our prior permission.
- Using the service for the purpose of directly earning income from communications, such as by using the communication intermediary or forwarding function or connecting to services provided by other companies.
- Calls made automatically using software, computer programming, etc. (excluding those provided by us or telecommunications carriers authorized by us).
- Communications used for purposes other than phone calls.
●With Simple3 L you can make domestic calls of up to 10 minutes to anyone at no additional charge without having to apply for Flat Rate+.
【加入例】SoftBank 光ファミリーの場合、基本料金5,720円/月+指定オプション550 円/月～が別途必要です。（2年自動更新プラン:2022年7月1日以降の契約者は、契約期間満了月の当月・翌月・翌々月以外での解約には解除料5,720円が必要。詳しくはこちら）。
●SoftBank 光／SoftBank 光＋自動更新なしプランは対象外。
●固定通信サービス1回線につき携帯電話回線（スマートフォン/ケータイ/タブレット/モバイルWi-Fiルーター）最大10回線まで適用。
●シンプルS/M/Lは毎月1,188円割引、シンプル2 Sは毎月1,100円割引、シンプル2 M/Lは毎月1,650円割引、スマホベーシックプラン S/M/R/L、データベーシックプラン L、Pocket WiFi®プラン 2（ベーシック）、スマホプラン S、データプラン L、Pocket WiFi®プラン 2は毎月550円割引、スマホプラン M/Rは毎月770円割引、スマホプラン Lは毎月1,100円割引します。
●「家族割引」、「光おトク割」、「おうち割 光セット（A）申込特典」、「おうち割 でんきセット（E）」との重複適用はされません。
"Simple3 S" is not included.
*The "applicable billing month" when conditions ① and ② below are met for the first time will be considered the first month (hereinafter referred to as the "applicable start month"), and the discount will be applied up to the 24th month. You can check the applicable start month on My Y!mobile, etc.
①Enrollment in the "Home Discount Electricity Set (E)" must be confirmed at the time of monthly assessment determined by SoftBank Corp.
② The fee for the applicable electricity service is determined in the month prior to the billing month for the mobile communications service that includes the relevant monthly determination time (the "applicable billing month").
*For each eligible electricity service contract, you can specify up to 10 lines with eligible Y!mobile Mobile Price Plan.
*If you subscribe to the "Home Bundle Discount Hikari Set (A)" in addition to the "Family Discount Service," "Home Bundle Discount Hikari Set (A)," or "Home Discount Hikari Set (A) Application Benefits," the benefit with the larger discount will be applied (if the discounts are the same, only one benefit will be applied), and the discount from the "Home Discount Electricity Set (E)" may not be applied. Please check the application status on My Y!mobile after the billing amount has been determined. Please note that even if there is a period when the discount from the "Home Discount Electricity Set (E)" is not applied temporarily due to overlapping with other discounts, the 24-month application period will continue to be counted.
*Tohoku Electric Power, Hokuriku Electric Power, and Kyushu Electric Power offer different services with equivalent discounts.
●Applicable conditions: As of the billing date,
① You must be subscribed to the eligible plan.
② The payment method for the eligible plan must be set to "PayPay Card" or "PayPay Card Gold".
③ The contract is in the name of an individual.
*Even if you set this up, if payment is not processed due to card suspension or other reasons, and payment is made by bank transfer or at a SoftBank / Y!mobile mobile store using your card, you will not be eligible.
●This discount service will be applied from the billing month in which the eligibility requirements are met.
Please note that in the following cases, the change in payment method may not take effect until the billing month following the procedure.
In that case, the discount will be applied from the billing month following the month in which the eligibility requirements are met. If the fixed monthly fee for the discounted plan is calculated on a daily basis, the discount amount for this discount service will also be calculated on a daily basis (if a fraction less than 1 yen occurs, that fraction will be rounded up).
●330 yen discount for PayPay Card / 770 yen discount for PayPay Gold Card. (Includes PayPay Card Discount)
●PayPay Gold Card requires an annual fee of 11,000 yen (tax included).
●Family cards are also eligible.
●This does not apply if you are using a billing agency service.
●If you cancel your subscription, the discount will also apply to the billing month in which the cancellation date falls.
Only the default data volume and data volume increased by Extra Data Option can be carried over. Additional data volume purchased when applying to return to the standard speed cannot be carried over. Any amount of data less than 100MB carried over will be rounded down.
●Data volume will be consumed in the following order: carried-over data > specified capacity (including data increase through Extra Data Option) > additional purchased data volume.
●For shared plans, data can be carried over during the period when data capacity is shared with the main line (while sharing is in effect). However, any unused data capacity from the month before sharing with the main line begins or the final month when sharing ends will not be carried over to the next month.
Automatically applied even without various discounts
For one year starting from the following month
Monthly
1,100
yen
discount!
No application is required if you subscribe to Simple3 M /L plan.
*Not applicable to Simple3 S
This offer cannot be combined with the following campaigns. The following campaigns will take precedence. Please note that periods during which this campaign's discount is not applied will also be counted as part of the discount application period.
• Home Bundle Discount Hikari Set (A) • Home Bundle Discount Hikari Set (A) Application Benefits • Family Discount Service • Home Internet Discount Set (E)
*Corporate contracts are not eligible.
PayPay Card
(Annual membership fee is free)
If every month
Monthly 330 yen
PayPay Card Gold
(Annual membership fee: 11,000 yen)
If every month
Monthly 770 yenPayPay Card Discount *2 (Gold) - 550 yen
PayPay Card Discount Offer *3 (Gold): -220 yen
If every month
Monthly1,430 yen
discount
If every month
Monthly1,870 yen
discount
PayPay Card Discount is
Discounts continue even after one year!
Click here for details on PayPay card.
*1 Not applicable to Simple3 S The effect will be applied from the month following your application.
*2 Basic fee must be paid with PayPay Card/PayPay Card Gold.
*3 This offer cannot be used in conjunction with "Simple 3 Special Discount" or "Simple 3 Special Discount (Parent-Child Discount)".
Restrictions on set conditions that were common in previous smartphone plans
*Not applicable to Simple3 S
This offer cannot be combined with the following campaigns. The following campaigns will take precedence. Please note that periods during which this campaign's discount is not applied will also be counted as part of the discount application period.
• Home Bundle Discount Hikari Set (A) • Home Bundle Discount Hikari Set (A) Application Benefits • Family Discount Service • Home Internet Discount Set (E)
*Corporate contracts are not eligible.
*Some calls may be excluded.
*Some calls are excluded. For domestic calls exceeding 10 minutes per call, a separate charge of 22 yen per 30 seconds will apply to the portion exceeding 10 minutes.
* If you sign up for or cancel this option in the middle of the month, the monthly fee will not be calculated on a pro rata basis.
If you apply for or cancel this option (excluding when signing up for a new contract) in the middle of the month, it will take effect from the following month.
If you change to Price Plan that is not eligible for this option, this option will be automatically canceled.
Cho-Otokuwari（Super Value Discount）Offer Terms and Conditions
緊急時や災害時の連絡手段にも安心
空が見える環境なら、メッセージ送受信可能
2026年秋以降 提供開始予定海外の高速データ通信が
毎月2GBまで※1追加料金なしで使える
SIMのみの新規契約は5ヵ月目以降
海外200以上の国/地域が対象。詳細はWEBへ。
2026年秋頃の提供開始まで2026年秋頃までは海外あんしん定額（定額国L）において24時間プラン980円（不課税）を 1ヵ月あたり最大7日分（6,860円）が追加料金なしでご利用いただけます。
定額国L：24時間で10GB超の場合、通常利用に影響のない範囲（最大4.5Mbps）で速度制御します。
もしものときもほかの回線につながるから安心
災害や通信障害などによって、ソフトバンクの通信ネットワークが利用できなくなった場合に、他主要事業者の通信網を使い、対応機種において音声通話などの通信を可能にする仕組みです。
【対象サービス】
・「緊急通報のみ方式」：緊急通報（110番・118番・119番）への発信のみ
・「フルローミング方式」：通話/緊急通報/SMS/MMS/パケット通信
対象の人気スタンプや絵文字、
着せかえが好きなだけ使える！
余ったデータは無料で自動的に
翌月にくりこしで無駄がありません！
国内通話10分かけ放題
880円/月
※ 一部対象外通話あり。1回あたり10分を超える国内通話は、10分超過分において、30秒につき22円の通話料が別途かかります。要申し込み。
有料オプションサービス4つが無料に！※1
留守番電話プラス※1 330円/月 追加料金なし
割込通話 220円/月 追加料金なし
グループ通話 220円/月 追加料金なし
一定額ストップサービス 110円/月 追加料金なし
国内通話かけ放題！
1,980円/月
※ 一部対象外通話あり。要申し込み。
有料オプションサービス4つが無料に！※1
留守番電話プラス※1 330円/月 追加料金なし
割込通話 220円/月 追加料金なし
グループ通話 220円/月 追加料金なし
一定額ストップサービス 110円/月 追加料金なし
60歳以上
通話ずーっと割引キャンペーン 1,100円引き880円
国内通話10分かけ放題
※ 一部対象外通話あり。1回あたり10分を超える国内通話は、10分超過分において、30秒につき22円の通話料が別途かかります。要申し込み。
有料オプションサービス4つが無料に！※1
留守番電話プラス※1 330円/月 追加料金なし
割込通話 220円/月 追加料金なし
グループ通話 220円/月 追加料金なし
一定額ストップサービス 110円/月 追加料金なし
国内通話かけ放題！
1,100円/月
※ 一部対象外通話あり。要申し込み。
有料オプションサービス4つが無料に！※1
留守番電話プラス※1 330円/月 追加料金なし
割込通話 220円/月 追加料金なし
グループ通話 220円/月 追加料金なし
一定額ストップサービス 110円/月 追加料金なし
60歳以上
通話ずーっと割引キャンペーン 1,100円引き0円