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Kyocera KYF31 Gratina 4G WiFi Keitai Tough Android Flip Phone Unlocked

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  • Kyocera KYF31 Gratina 4G Keitai
  • Kyocera KYF31 Gratina 4G Keitai
  • Kyocera KYF31 Gratina 4G Keitai
  • Kyocera KYF31 Gratina 4G Keitai Color Choices
  • Kyocera KYF31 Gratina 4G Keitai Keypad
  • Image 6
  • Kyocera KYF31 Gratina 4G Keitai Sub-Display
  • Kyocera KYF31 Gratina 4G Keitai Waterproof
  • Kyocera KYF31 Gratina 4G Keitai Shockproof
  • Kyocera KYF31 Gratina 4G Keitai Touch-cruizer
  • Kyocera KYF31 Gratina 4G Keitai Touch Pointer Turn on
  • Kyocera KYF31 Gratina 4G Keitai
  • Kyocera KYF31 Gratina 4G Keitai
  • Kyocera KYF31 Gratina 4G Keitai Green
  • Kyocera KYF31 Gratina 4G Keitai White
  • Kyocera KYF31 Gratina 4G Keitai Black
  • Kyocera KYF31 Gratina 4G Keitai Pink
130.00 Grams
Requires 3-4 business days to Ship
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 Product Description

Please Note !

  • This is for a SIM-UNLOCKED Kyocera KYF31 Gratina 4G Keitai Android Flip Phone
  • Flip phone running off a base version of Android 5.1.1 Lollipop
  • Cellular Internet / Data connection through simcard will work on this phone (Simcard Data or WiFi connection)
  • Can install Android Apps (apk)
  • We can put an App market on the phone, or you can install app by PC connection
  • We are happy to guide our customers on how to install apps after they receive the phone.
  • Also, if customers need us to install a few apps before shipping, we are happy to pre-install for you (no extra charge)

Main Specifications

  • AU KDDI Kyocera KYF31 Gratina 4G Keitai Android Flip Phone
  • This is the Flip phone running a base version of Android 5.1.1 Lollipop OS
  • Still using the traditional styling of Japanese flip phone, the core is running Android
  • The KYF31 has a traditional simple to use round flip phone design.
  • Rounded corners, smooth body, simple and great!
  • This phone has the MIL Military Grade shockproofing, Waterproofing, and Dustproofing
  • Front sub-display blends seemlessly in with the phone body
  • Using the Flip Phone touch-cruiser pointer
  • Scroll up and down by moving your finger over the keypad
  • Shrink or Enlarge on the screen just like you would on a standard smartphone.
  • 8.0 Megapixel HD Camera (3264 x 2468 pixels max picture taking resolution)
  • HD video Recording (1280 x 720 video capture resolution)
  • Multiple camera / picture taking modes and framings
  • HDR Supported
  • Android 5.1.1 OS (base)
  • This Japanese phone is Waterproof / Dustproof in compliance with IPX5/IPX8 standards
  • Also has the Military Grade Shockproof to help protect from drops / falls (MIL-STD-810G Method 516.7:Shock-Procedure IV)
  • Bilingual phone (can be changed from Japanese to English and vice versa) (We set all phones to ENGLISH before shipping)
  • Please Note : This phone uses a Nano-Simcard (the smaller size simcard, like on the iphone 6). If you do not have a nano-simcard, you will need to contact your cellular company and exchange your simcard for a Nano-Simcard

Other Specifications 

  • CPU: Qualcomm Snapdragon 210 (MSM8909) Quad-core 1.1GHz
  • GPU: Adreno 304
  • Memory : 8 GB ROM / 1 GB RAM
  • 2G Network : GSM EDGE 850, 900, 1800, 1900 MHz
  • 3G Network : UMTS HSDPA UMTS 850, 1900, 2100 MHz
  • 4G Network : FDD-LTE 700, 850, 1800 (Band 3, 17, 26)
  • 4G Network : TD-LTE 2500 (Band 41)
  • Micro SD memory card supports up to 32 gigs
  • Battery Size : 1500 mAh
  • Main Display : 3.4 Inch qHD FWVGA TFT Display (854 x 480 pixels) 
  • Sub Display : 1.0 Inch screen (128 x 36 pixels)
  • Bluetooth version 4.1
  • WiFi 802.11 b/g/n
  • NFC
  • Micro-USB Interface / Port
  • Music Format : MP3, AAC, AAC+, eAAC+, AMR, QCELP, WAV
  • Size : 113 x 51 x 16.7mm
  • Simcard Size : Nano


  • Kyocera KYF31 Gratina 4G Keitai Android Flip Phone x 1
  • Battery x 1
  • Rear Battery cover x 1
  • AC Adapter Charger x 1
  • Box & Manual x 1



 Product Videos

auの4Gガラケー「GRATINA 4G」を触ってみた
  • auの4Gガラケー「GRATINA 4G」を触ってみた
    http://buzzap.jp/news/20160112-gratina-4g-au-2016-spring/ LINE...
  • auの4Gガラケー「GRATINA 4G」のタッチポインター #KDDI
    http://buzzap.jp/news/20160112-gratina-4g-au-2016-spring/ LINE...

 Product Reviews

Showing reviews 1-4 of 15 | Next

  1. Gratina breathes new life into the neglected niche of flip phones & shows that they can still thrive in the age of 'App for that.'

    Posted by Zachary on 29th Apr 2019

    I bought this with the intent to replace the old flip phone I had been using. It was working fine, but being stuck on English & Spanish as my only language options along with a lack of customization beyond caller tones, no app store, & a very weak camera had me search for a phone that offered Japanese, more customization, and was generally better. If you're like me, I've never been a fan of smartphones as they lack what I love about flip phones: Buttons & the clam-shell design. Alas, most stores these days are lucky to offer any flip phones for sale, let alone any that had Japanese.
    Since the purchase, I have been satisfied with what it can do. It's customization reaches beyond caller tones (Alerts & SMS tones), manner/silent mode is just the push of a button, and it more importantly offers Japanese as a language option. I am able to make calls & receive SMS (I use it in the US & my carrier is T-Mobile.) The pointer feature takes some time to learn, but I've gotten used to it. All in all, things work like a charm (although you may have to manually input settings such as the APN network for your carrier & have a SMS app installed before sending messages.)
    So why is this review rated 4 stars then? Well unlike my old phone this one does not have a headphone jack, so if you want to listen to your media in peace you're out of luck unless you have one of those USB headphones. Regardless of what phone manufacturers say, I find headphone jacks to be integral. There are also some features that only work in Japan, but they aren't too big of a deal. Also if you plan on playing games on this device, your library is likely going to be limited to what doesn't require quick reflexes or rely on touch screens, again I don't think it's too much of a big deal as long as you don't mind playing simple titles like Snake.
    Overall, this device offers the best of both worlds by fulfilling the niche of flip phones & having enough smart phone functionality that doesn't teeter the user towards smartphone addiction due to the sacrifice of touch screen convenience.
    Beyond the device itself, I was provided excellent service from Mr. Tominaga as he helped me navigate into the world of Japanese phones & provided me useful information that I couldn't find on the web.

  2. nice!

    Posted by Cony on 27th Aug 2018

    I love this phone! Everything is perfect <3

  3. Perfect for someone wanting to cut down on smartphone usage, but still wanna be connected

    Posted by Stephen on 16th Aug 2018

    I've had this phone for a month now, and it's great. I got it as a companion to my Note8, so I could cut down on the time I'm using a phone. The experiment is successful, and I've freed myself a bit of time to do some other things. The phone itself has a great feel in the hand, and is very comfortable to hold. The software took some time getting used to, but I'm having no problems. All in all, I'd recommend this for people like me.

  4. flip phone 4g/3g

    Posted by Unknown on 23rd Mar 2018

    customer service was amazing helped out and first time buying a new one. the phone is awesome work like a dream no issues what so ever and very comfortable in the hands i also like how i can add a micro sd card in there to save stuff on the phone and not use its internal memory very satisified with my purchase.

Showing reviews 1-4 of 15 | Next

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