GRATINA KYF37 Specifications & Services

Brand name KYOCERA

Basic Specifications
Size Approx. 51 × 113 × 16.7mm
Weight Approx. 136g
Battery Capacity 1,500mAh
Continuous Call Time
(Voice Call Time / When used within Japan)
Approx. 590 minutes
Continuous Standby Time
(When used within Japan)
4G LTE area : Approx. 500 hours
Charge Time Common AC adapter 05 : Approx. 120 minutes
Battery removal YES
External memory
(Maximum storage capacity of compatible cards)
32GB microSDHC™
Internal Memory Capacity (RAM) *3 1GB
Internal Memory Capacity (ROM) *3 8GB
Number of Addresses Registered in Address Book Varies depending on free space in handset memory
Display Type TFT
Display Size Approx. 3.4 inches
Maximum Number of Colors Displayable on LCD Approx. 16.77 million colors
Display resolution 854×480 (FWVGA)
Waterproof *4 IPX5 / IPX8 [1]
Dustproof *4 IP5X [2]
au IC Card au Nano IC Card 04 LE
CPU MSM8909 1.1GHz Quad-core
Biometric authentication -

  1. The continuous call time and continuous standby time listed are average time lengths for usage from combined moving and fixed locations with normal signal reception. The actual times for which the phone can be used will vary widely depending on a variety of conditions, including calling time, number of calls, email composing time, number of sent and received emails, usage conditions of Internet and applications, and network conditions. (More frequent usage or poor signal reception shortens these times. Less frequent usage extends the times.)
  2. This figure has been confirmed through the operation test following KDDI's standard. With some models, copyrighted data that can be stored in external storage is transferable to secured external memories. However, note that the availability varies depending on the manufacturers: some microSD™ cards, microSDHC™ cards and microSDXC™ cards even with the above-mentioned specifications may be unsupported.
  3. The entire memory capacity cannot be used to save apps and data.
  4. Be sure the card slot cover and caps on devices with these are securely fastened and the battery cover on devices with a removable battery cover is firmly in place.
    Do not immerse the unit in ocean, pool, or hot spring water. Do not place the unit on the sand.

  1. IPX5 rating: The unit will retain its functionality as a phone even if blasted with water projected at all angles through 6.3 mm nozzles at a flow rate of approximately 12.5 liters per minute for more than 3 minutes from a distance of approximately 3 meters. IPX8 rating: Water will not leak inside and the unit will retain its functionality as a phone even if it is gently immersed in a tank of still tap water at room temperature at a depth of 1.5 meters and placed on the bottom for approximately 30 minutes.
  2. IP5X rating: When the unit is churned for 8 hours inside a dust resistance testing tube, the unit maintains its functionality and safety even when test dust (a diameter of 75 µm or less) enters the unit.
au VoLTE YES [3]
Communication standard 4G LTE
Maximum communication speed
Downlink : Max / Uplink : Max (Mbps)
150/25 [4]
Tethering YES (10 devices maximum)
Wi-Fi IEEE802.11b/g/n (2.4GHz)
Bluetooth® Ver.4.1
Infrared Communications YES (Cannot be used as a remote controller.)

  1. Maximum transmission speed differs depending on the service area and communication standards. For details, please see the service area map.

    Service area (in Japanese only)

  1. When connecting with other devices that support au VoLTE (within the au 4G LTE area), voice calls with high-quality sound are enabled. In other situations, a conventional level of sound quality is enabled for voice calls.
    au VoLTE models do not support 3G communications in Japan.
  2. 150 Mbps is not available in some areas. For details, check the service areas.

    150 Mbps service areas (in Japanese only)

  • Each of the above communication speeds is a best-effort service. Note that the maximum communication speed is not the actual communication speed, but the maximum value based on the technical standards. The actual speed may fall substantially short of the maximum for various reasons including customer's communication environment and traffic conditions.
Main camera effective pixels Approx. 8.00 million pixels
Sub camera effective pixels -
Imaging element CMOS
Shooting light Still image : YES
Movie : YES
Auto-focus Shooting Still image : YES
Movie : YES
Camera shake correction function & Camera shake reduction function Still image : YES
Movie : YES
Macro Function YES
Maximum Still Image Shooting Size 3,264×2,448
Maximum Movie Shooting Size 1,280×720 (HD)
Zoom Function - Still image 4x
Zoom Function - Movie 4x
TV (Viewing) 1Seg : YES
Full Seg : -
TV (Recording) 1Seg : -
Full Seg : -
TV (Continuous Viewing Time) 1Seg : Approx. 410 minutes
Full Seg : -
Hi-Res -
Battery conservation YES (Power-saving switch) [5]
Wireless charging -
au Basic Home -
Security Buzzer -
Bilingual Function YES (2 languages including Japanese)
au World Service YES [GSM / UMTS] [6]
Osaifu-Keitai® YES (Felica) [7]
Acquire information / Link (NFC) -
Emergency Rapid Mail YES
Emergency call location notification YES
+ Message *6 -
SMS (c-mail) YES
au Mail YES
Voice Mail YES

  1. To use +message, update of the SMS app may be required. Click the link below for more information.

    + Message (in Japanese only)

  1. Restricted functions differ for each model. For details, see the instruction manual.
  2. Service available areas for au World Service "VoLTE" can be checked below.

    au World Service"VoLTE" (in Japanese only)

  3. The services available with Osaifu-Keitai are different from those with 3G mobile phones and smartphones.

    Click here for details (in Japanese only)

* Product specifications may change without notice.

Bundled items -

  • Separate purchase of a dedicated AC adapter or common AC adapter is required for charging.

Specific Absorption Rate (SAR) of Electrical Waves : HEAD 0.547W/Kg
Specific Absorption Rate (SAR) of Electrical Waves : BODY 0.520W/Kg

For details about the Specific Absorption Rate (SAR) of au phone (in Japanese only)

Recommend Information


Setting guide and manuals are available.

  • By phoneOpen 9:00 – 20:00

    • English

      0120-959-472(Toll Free)

    • Portuguese

      0120-959-473(Toll Free)

    • Chinese

      0120-959-476(Toll Free)

    • Korean

      0120-959-478(Toll Free)

    • Tagalog

      0120-933-952(Toll Free)

    • Vietnamese

      0120-933-961(Toll Free)

    • Japanese
      about au mobile services

      157(Toll Free)from au phones

      0077-7-111(Toll Free)

      about Internet services
      Contract / Fee / Billing

      0077-7084(Toll Free)

      Connection setting / failure

      0077-777(Toll Free)