Online Exclusive Emergency Price Reduction!! Popular smartphones at unbelievably low prices!
Close

Emergency price reduction!! Popular smartphones at an unbelievable bargain price!
*Applicable to new contracts and transfers from other carriers with Simple 3. *Transfers from SoftBank /LINEMO are not eligible.

  • KYOCERA Kantan SMARTPHONE4 Y!mobile Smartphone (Photos of the back design and simple home screen) | Y!mobile
  • KYOCERA Kantan SMARTPHONE4 Navy Smartphone (Simple Home front display seen from diagonally from the front) | Y!mobile Y!mobile
  • KYOCERA Kantan SMARTPHONE4 Navy Smartphone (Rear Camera and Simple Design) | Y!mobile Y!mobile
Close
  • KYOCERA Kantan SMARTPHONE4 Silver Smartphone (Photos of the back design and simple home screen) | Y!mobile Y!mobile
  • KYOCERA Kantan SMARTPHONE4 Silver Smartphone (Simple Home front display seen from diagonally from the front) | Y!mobile Y!mobile
  • KYOCERA Kantan SMARTPHONE4 Silver Smartphone (Rear Camera and Simple Design) | Y!mobile Y!mobile
Close
  • Kantan SMARTPHONE4 KYOCERA Pink Smartphone (Photos of the back design and simple home screen) | Y!mobile Y!mobile
  • KYOCERA Kantan SMARTPHONE4 Pink Smartphone (Simple Home front display seen from the front) | Y!mobile Y!mobile
  • Kantan SMARTPHONE4 KYOCERA Pink Smartphone (Rear Camera and Simple Design) | Y!mobile Y!mobile
Close
color:Navy

Unlimited domestic calling is a great deal for people over 60!

  • Product Price
  • Product Information

capacity

Pricing plans

Contract category

      You can also select "Check stock/apply here"

      Apply through the online store
      Same-day shipping available, and shipping is free!

      Check availability & order

      Click here for a price simulation.

      Get great deals with trade-ins
      When you trade it inUp to yenequivalentYou can get PayPay points *1,2,3

      Check the trade-in value

      • *1 You must purchase a new designated model from Y!mobile and complete the collection and appraisal of your trade-in device.
      • ※2 From then onThis is the bonus amount you receive when you trade in your old item.
      • *3 PayPay points cannot be transferred or withdrawn.
      The price of the device varies from store to store.

      Key Features

      Screen size
      Approximately 6.1 inches

      Camera pixel count
      Approximately 50 million pixels

      バッテリー容量
      4,160mAh

      下り最大通信速度
      5G:1.7Gbps※1
      4G:500Mbps※2

      Android™ 14

      Biometric and facial recognition

      fingerprint
      Face Recognition

      Waterproof and dustproof

      Wallet

      • *All specifications are based on information at the time of release.
      • *1 Currently available in some areas of Hokkaido, Tohoku, Tokyo, Nagoya, and Hokuriku.

      • *2 Available in some areas of major cities across the country.

      Easy to use with an easy-to-understand screen

      Simple and easy to understand screen

      The large screen makes it easy to see text and photos, and it's easy to operate.

      1. "Just press to get support"

      Simply select the symptoms you are having and your smartphone problems will be automatically resolved.
      If you are unable to resolve your issue or have any other concerns, please contact us by phone.

      ②Three easy-to-use buttons

      One-touch phone and email operations. Equipped with three buttons that can be used just like a cell phone.

      Large, easy-to-use text input screen

      Make your outing more fun with a wide range of functions

      A fun and sustainable walking habit

      You can talk to "Ugokuma" and have fun while aiming to make walking a habit.

      It gives you tips for a healthy lifestyle through simple checks.

      You can record your daily steps and compare the calories burned and distance traveled.

      Make your photos more fun

      With a high-resolution camera, you can record your daily life in vivid detail.

      Large capacity for ample storage

      With 128GB of storage space, you can store plenty of photos and videos.

      Reliable battery life

      Equipped with a large-capacity 4,160mAh battery, you can enjoy it on the go without worrying about charging.

      Full support with safety and security features

      Measures against nuisance calls

      Calls from suspicious numbers are notified on the screen. Even if you answer the phone, the call is recorded and an automated voice message warns the caller.

      Connect with your family with "Good Morning Mail"

      When you use your smartphone at the beginning of the day, an email will be automatically sent to your registered contacts. This is also useful for family members who live far away.

      Calls are easy to hear

      The design makes it easy to hear the other person's voice even in noisy places and is less likely to interfere with hearing aids.

      • * Seniors tend to have poor hearing for the high-frequency parts of speech, so our unique technology is used to process the high-frequency parts of received calls, making them easier to hear.
        It complies with American hearing aid compatibility standards (Hearing Aid Compatibility), making it less likely to interfere with hearing aids.

      Convenient functions and reliable durability

      Face recognition and fingerprint recognition

      In addition to facial recognition, fingerprint recognition is now also supported. You can unlock the phone just by looking at the screen or touching it with your finger, which is also useful for preventing identity theft.

      Compatible with My Number Card and Osaifu-Keitai

      It can be conveniently used for My Number health insurance cards, government services, train and bus payments, and shopping payments.

      Waterproof, dustproof and shockproof

      It can be washed thoroughly with foaming hand soap to keep it clean. Even if it is dropped, it is unlikely to break, so you can use it for a long time with peace of mind.

      • *Please refer to the specifications for details on waterproof, dustproof and shockproof properties.
      • *Product photos and screen images are for illustrative purposes only.

      Related information

      • *The company names, system names, and product names listed on this page are generally registered trademarks or trademarks of the respective companies.
      • * Specifications and appearance are subject to change.

      Main Specifications

      Basic specifications

      size
      Width x height x thickness of main body excluding protrusions
      約W72×H165×D9.1mm
      Weight
      Weight with battery pack installed
      約177g
      Continuous talk time *1
      Talk time when signal reception is normal
      [FDD-LTE] 約2,379分
      Continuous standby time *1
      Standby time when signal reception is normal
      [FDD-LTE] 約538時間
      [AXGP] 約510時間
      Battery capacity
      Battery capacity, which is an indication of continuous usable time, etc.
      4,160mAh
      Charging time
      Approximate time required to fully charge the battery from a completely empty state
      約95分(USB Type-C PD-PPS対応 ACアダプタ)
      • *Measurements were taken using an AC adapter specified by SoftBank and are only a guide.
      Platform
      OS and version installed
      Android™ 14
      CPU
      Data processing speed and number of processor cores
      Qualcomm®SM4450(Octa-core) 2.2GHz+2.0GHz
      ROM/RAM capacity
      The capacity of the built-in memory installed in the device
      128GB / 4GB
      Supported external memory / Maximum supported capacity *2
      Types and capacities of memory cards that can store images, videos, music files, etc.
      microSDXC™ / Maximum 1TB
      SIM
      NanoSIM: A card-type SIM that is inserted into a smartphone
      eSIM: A digital SIM integrated into a smartphone
      nanoSIM / eSIM

      communication

      Data communication method
      Supported communication standards or methods
      5G / FDD-LTE / AXGP
      Maximum communication speed *3 *4
      Maximum data communication speed in "4G/5G" areas
      [5G] Downlink up to 1.7Gbps / Uplink up to 136Mbps *1
      [4G] Download speed up to 500Mbps / Upload speed up to 43Mbps *2
      Supported frequencies
      Supported Frequency Bands
      Please see the PDF for details (52KB)
      VoLTE (HD+) / VoLTE
      High quality voice communication possible
      - / ●
      Massive MIMO support

      display

      size
      The diagonal length of the display screen
      Approximately 6.1 inches
      Display method
      Display method
      TFT
      resolution
      Display screen detail
      1,560 x 720 (HD+)

      camera

      Effective pixels
      Number of pixels used when shooting
      [メイン]約5,000万画素
      [サブ]約800万画素
      Recorded pixels (still images)
      Maximum size of still image that can be captured
      8,160 x 6,144 pixels
      Recorded pixels (video)
      Maximum video size that can be recorded
      1,920 x 1,080 pixels (Full HD)
      Photo Light
      Auxiliary light function for shooting in dimly lit places
      Autofocus
      Auto-detect focus function
      Image stabilization (still images/videos)
      Reduces the effects of camera shake that can easily occur when shooting
      ● / ●

      Teza

      Wi-Fi tethering function (maximum number of connections)
      Use your smartphone or tablet as a Wi-Fi router (maximum number of devices that can be connected simultaneously)
      ● (10 units)

      Email

      Y!mobile email (@yahoo.ne.jp)
      Unlimited carrier email available on multiple devices
      MMS *5
      It is possible to decorate text and send and receive multimedia such as audio and video.
      ● (@ymobile.ne.jp)
      SMS (Short Message Service)
      Compact emails of up to 70 full-width characters can be sent and received to smartphones and mobile phones of other companies.

      Useful features

      Mobile Wallet®
      Smartphones can be used as electronic money
      NFC
      You can use linked services just by holding your smartphone over compatible devices such as home appliances.
      Waterproof/dustproof
      Compatible waterproof and dustproof standards
      IPX5, IPX8 / IP6X *6
      tv set
      Ability to watch terrestrial digital broadcasts on mobile devices
      Wireless LAN
      Wireless communication IEEE802.11 compatible standard
      a/b/g/n/ac
      Bluetooth®
      It can be connected wirelessly to compatible devices such as wireless headphones and computers.
      ● (Ver.5.0)
      Infrared communication
      Compatible devices can wirelessly exchange data such as phone numbers
      GPS
      Use the navigation system to check your current location
      Emergency Alert Email
      Earthquake and tsunami alerts can be received free of charge
      International Roaming
      You can use your smartphone overseas as is.
      Biometric authentication
      You can unlock the screen using a fingerprint or face sensor.
      Fingerprints, Faces

      Others

      Accessories ※7
      Items included with the purchase (excluding instruction manual and warranty documents)
      Easy Guidebook

      Release date and manufacturer

      release date Release date: March 6, 2025
      Manufacturer ZTE Corporation
      Product Number A402ZT
      • *All specifications are based on information at the time of release.
      • *1 From April 9, 2026, the maximum communication speed was reduced from 159Mbps to 136Mbps.
      • *2 From April 9, 2026, the maximum communication speed was reduced from 46Mbps to 43Mbps.
      • *1 Varies depending on radio wave conditions and usage environment.
      • *2 We do not guarantee that all commercially available memory cards will work.
      • *3 The communication speeds listed are the maximum values based on technical standards and are based on a best-effort approach, and are not guaranteed as effective speeds. Communication speeds may vary depending on the communication environment and congestion. In addition, maximum communication speeds vary depending on the area you use. Please check here for details on areas.
      • *4 Supports UDC (Uplink Data Compression). By improving the efficiency of upstream data transmission, data transmission speeds faster than the listed speed may be possible depending on your environment.
      • *5When Changing devices, you may not be able to continue using the email address you used on your previous model.
      • *6 [IPX5] The phone will maintain its functionality even when it is sprayed directly from any direction with room temperature tap water at a rate of 12.5 liters per minute from a distance of about 3 m using a nozzle with an inner diameter of 6.3 mm. [IPX8] The phone will not leak water and will maintain its functionality even when it is gently submerged in a tank of room temperature tap water and still water at a depth of 1 m and left on the bottom for about 30 minutes. [IP6X] This means that the phone will function and remain safe when it is placed in a device containing dust particles with a diameter of 75 µm or less for 8 hours and agitated, and then removed.
      • *7 For models that do not come with an AC adapter, a separate AC adapter (SB-AC22-TCPD) is available. For details, please check with Y!mobile shop or Y!mobile dealer.

      About Specific Absorption Rate (SAR)

      This product, Kantan SMARTPHONE4, complies with the technical standards set by the government regarding the human body's absorption of radio waves and international guidelines for radio wave protection.

      Learn more
      Close the window and proceed
      *If you cannot close the button by tapping it,
      Please close your browser by clicking "x".
      Y!mobile Parent-Child Discount

      * Applications via My Y!mobile are accepted until 8 PM on May 22, 2026.

      Simple3 M/L

      1,100yen/month discount

      Eligible for users aged 5 to 18 and their family members.

      Y!mobile Parent-Child Discount

      ●Simple3 S is not eligible for this campaign discount.
      ●When applying for a plan change, changes between Simple3 M and Simple3 L are also eligible.
      ● If you sign a contract without changing your plan, the discount amount will be prorated for the month of sign-up.
      ● The discount amount will be prorated for the month of contract transfer.

      See details

      Relatives living far away and partners living together are also eligible!
      Y!mobile Parent-Child Discount

      For Simple 2 M/L

      1,100yen/month discount

      Students (users aged 5 to 18 years old) and their families are eligible

      ● The Simple 2 S plan is not eligible for this campaign.
      ● When applying to change a plan, plan changes between Simple 2 M/L are also eligible.
      ● For contracts other than plan changes, the value of the discount for the sign-up month will be prorated.
      ● The value of the discount for the month of transfer will be prorated.
      ● This discount does not apply to months for which total data usage for Simple 2 M/L is less than 1 GB/month. In such cases the value of this discount does not carry over to the following month. Additionally, that month is counted in the discount application period.

      See details

      A bargain as a set with home internet

      Home Bundle Discount Hikari Set (A) Simple3 S /M/L. 6,600 yen discount per month for those signing up for a family of four.

      Family Discount and Home Discount Electricity Set (E) do not apply to overlapping discounts.

      [Subscription example] For SoftBank Hikari Family, a basic fee of 5,720 yen/month plus designated options starting from 550 yen/month is required. (Two-year automatic renewal plan: For subscribers who sign up after July 1, 2022, a cancellation fee of 5,720 yen is required for cancellations other than the month of the contract expiration date, the month following, or the month after.)

      Other Notes

      ● SoftBank Hikari plans without automatic renewal are not eligible.
      ● Up to 10 mobile phone lines (smartphones/mobile phones/tablets/mobile Wi-Fi routers) can be added per fixed-line communication service.
      ●Simple S/M/L plans receive a monthly discount of 1,188 yen, Simple2 S receive a monthly discount of 1,100 yen, Simple2 M /L plans receive a monthly discount of 1,650 yen, Smartphone Basic Plan S/M/R/L, Data Basic Plan L, Pocket WiFi® Plan 2 (Basic), Smartphone Plan S, Data Plan L, and Pocket WiFi® Plan 2 receive a monthly discount of 550 yen, Smartphone Plan M/R plans receive a monthly discount of 770 yen, and Smartphone Plan L receives a monthly discount of 1,100 yen.

      See details

      Relatives living far away and partners living together are also eligible!

      Family Discount Service Simple3 S /M/L contract: 1,100 yen/month discount (tax included) for the second line and onwards

      Home Bundle Discount Hikari Set (A) and Electricity Set (E) cannot be discounted together.

      * Discount applies for up to 9 lines

      See details

      Save money when purchased as a set with your home electricity

      Home Electricity Home Discount Electricity Set (E) Simple3 M /L contract for 24 months 1,100 yen/month discount (tax included) If you sign up for a family of 4, you will receive a 4,400 yen discount every month

      Simple3 S is not included, and Family Discount and Home Bundle Discount Hikari Set (A) do not receive overlapping discounts.

      Learn more about Ouchi Denki

      Learn more about Ouchiwari Electricity Set (E)

      Exclusive Benefits for Y!mobile Users

      Pay with a PayPay Card Gold in 
      When you pay

      * Annual membership fee: 11,000 yen

      Save 9,240 yena great deal

      PayPay Card

      No annual fee

      PayPay Card

      discount3,900円/yr savings

      330円/Monthly discount

      PayPay Card Gold

      Annual membership fee: 11,000 yen

      PayPay Card Gold

      discount9,240円/yr savings

      770円/mo off *

      * PayPay Card (Gold) discount: -550 yen/month PayPay Card (Gold) Bonus discount-220 yen/month

      Smartphone Light/Air electricity
      If you pay with PayPay card
      monthlyPayPay PointsYou can accumulate points!

      *PayPay points cannot be withdrawn or transferred.

      Contract Processing Fee Benefits

      Store:4,950Yen (tax included)

      Online shop:3,850Yen (tax included)

      Per Sign-UpPayPay Points1,100yen equivalent!

      Other Notes

      [PayPay Card Discount]
      *Applicable to Simple3 S /M/L sizes.
      *If you change your payment method card type, the new discount amount will be applied to your bill starting from the month in which you made the change.
      ●Conditions for application: When PayPay Card or PayPay Card Gold is selected as the payment method for your usage fees as of the billing date.
      ●Family cards are also eligible.
      ●This does not apply if you are using a billing agency service.
      ●If the basic usage fee for the discounted Price Plan is prorated, the discount amount for this discount service will also be prorated.
      ●If the account is transferred or inherited, the discount will end in the previous billing month.
      If you cancel your subscription, the discount will also apply to the billing month in which the cancellation date falls.

      [PayPay Points]
      ● Some services, such as "PayPay (balance) top-up" and "SoftBank (including Y!mobile and LINEMO) communication charges," may not be eligible for rewards.
      For more details Here
      ●When using a family card, registering the family card in the PayPay app will grant the card to the family member. For details, see below. Here
      * Points will be awarded as PayPay points. PayPay points will be awarded for every 200 yen (tax included) spent (fractions will be rounded down).
      *If you have not completed the setup for using "PayPay Credit," you will not be eligible for PayPay Step. To receive the maximum reward rate, you must meet the conditions for PayPay Step (30 or more payments of 200 yen or more and a total payment amount of 100,000 yen or more). The reward rate will vary depending on your usage in the previous month. Also, some payments are excluded.
      Details of the grant breakdown, etc. Here

      [Contract processing fee discount (PayPay Card Discount)]
      ● Some services, such as prepaid mobile phone services and satellite communication services, are not covered by this offer.
      ● You must have completed the eligible procedure during the campaign period, or have a contract for the line on the eligibility determination date in the next section.
      ● PayPay Card Discount must be applied on the billing date following the billing month in which the relevant procedure was performed (hereinafter referred to as the "application determination date").
      ●You must have linked your account in the PayPay app or set up a reward recipient in My SoftBank before the reward is issued.
      ●SIM card replacements at online stores or phone shops are not covered.
      ● The benefit will be granted during the billing month following the billing month in which the eligibility determination date falls.
      *If you have not linked your account in the PayPay app or set up benefit receipt in My SoftBank at the time of this benefit grant, this benefit will be granted provisionally. If you set up benefit receipt within 60 days of the benefit grant date, you will be able to receive the benefit, but if you do not set up benefit receipt, you will not be able to receive the benefit. A provisional grant notification email will be sent the day after the benefit is granted, so please check the grant date in that email.
      ●If you cancel your line contract on or after the day following the eligibility determination date, before the benefits are granted, if you transfer, assign, change the name on Family Discount account, or subscribe to the telephone number/email address retention service, the benefits will not be granted.
      ●PayPay points can also be used at the PayPay/PayPay Card official store.

      [Campaign Period]
      August 20, 2025 - End date TBD
      *The end date will be announced on SoftBank website and other platforms.

      See details

      If you make lots of quick calls
      Daretodemo Teigaku+

      Unlimited 10-minute domestic calls

      tax excluded:800yen/month (880yen/month)

      S M
      tax excluded:800yen/month (880yen/month)

      * Some calls are not included. Domestic calls exceeding 10 minutes incur a separate charge of 22 yen per 30 seconds for the extra time. You must apply.

      See details

      If you don’t want to talk a long time
      SuperDaretodemo Teigaku+

      Unlimited domestic calls!

      tax excluded:1,800yen/month (1,980yen/month)

      S M
      tax excluded:1,800yen/month
      (1,980yen/month)
      Users 60 years old and up
      tax excluded:800yen/month (880yen/month)

      See here for details on our permanent discount campaign on calls for those aged 60 and over

      * Some calls are not included. You must apply.

      See details

      Simple 3L size, great value
      Daretodemo Teigaku+

      With Simple3 L contract
      Unlimited 10-minute domestic calls

      No application required

      * 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.

      See details

      If you don’t want to talk a long time
      SuperUnlimited access to anyone + (L)

      With Simple3 L contract
      Unlimited domestic calls!

      tax excluded:1,000yen/month (1,100yen/month)

      * Some calls are not included. You must apply.

      See details

      Protect against various dangers andtrouble
      Security Pack Premium

      tax excluded:700yen/month (770yen/month)

      First month free

      S M L
      tax excluded:700yen/month (770yen/month)

      *Security Pack Premium must be applied for separately

      See details

      6 months free when you first sign up!
      Data Increase Option

      tax excluded:500yen/month (550yen/month)

      When you first sign up6 months free!

      Additional monthly data when you subscribe to the option

      S M L
      +2GB
      +5GB
      +5GB

      This campaign lets new Data Increase Option users use this option for free for the first six months.
      *The monthly fee for this option will not be prorated if you sign up or cancel mid-month.
      If you apply when signing up for a new contract, this option will be applied from the month of your application. In other cases, it will be applied from the month following your application.

      See details

      Lower your monthly payments!
      New Benefit Support (A)

      If you purchase an eligible model with 48 installments and return the model using the new special support (A) from the 25th month onwards *2,You will not be required to pay the remaining device cost (up to 24 months' worth) *3The mechanism that leads to this

      • ・ The model must be collected and assessed in accordance with the conditions specified by our company by the end of the month following the application for the benefit.
      • ・If the appraisal conditions are not met, you will be required to pay 22,000 yen (tax-exempt) in addition to having the model collected.
      • ・This service is not available to corporate customers.
      • ・The amounts of the 1st to 24th installments and the 25th to 48th installments (installment payments) may differ depending on the model and the time period.

      *1 Some models are not eligible. *2 The timing may vary depending on the application status. You can check the start date for your benefit on your contract management site, such as My Y!mobile. *3 The amount you do not have to pay will vary depending on when you use the benefit.

      See details

      A warranty service that gives you peace of mind in case of "what if" situations.
      Koshou Anshin Pack Premium(Premium Device Protection)

      Peace of mind even if your smartphone or iPhone malfunctions. Get it replaced immediately at a shop or online! This is a great value package that also includes protection against water damage, theft, loss, and device damage, all in one package.

      880yen/month

      Enrollment available only when purchasing a new device.

      *Standard repair prices are for reference only. Actual costs may vary depending on the device model and the severity of the damage.

      See details