Kyocera
Kyocera KY-42C (Digno Keitai R)
A Japanese rugged keitai that actually works on US LTE.
Secondhand Enthusiast imports and alternatives
$220 to $310
~$220 new from Japanese eBay sellers; one guide quotes $260-$310
- TypeFlip
- SoftwareAndroid
- Screen3.4" LCD
- Network3G / 4G
- Introduced Unknown
Software and apps
- Operating system
- Android - sources say 8.0 or 10 depending on firmware; English system language is available
- App store
- Unknown
- Web browser
- Yes
- Unknown
- Spotify
- Unknown
- RCS messaging
- Unknown
Hardware
- Form factor
- Flip (rugged keitai)
- Screen
- 3.4" main (540x964 qHD per the retailer; another source says 480x854) + 1.0" 128x36 sub-display
- Camera
- Yes
- Battery
- 1,500 mAh
- USB-C
- Yes
- Headphone jack
- Unknown
Connectivity
- Network
- 3G / 4G3G UMTS 900 / 1700-2100 / 2100 | 4G LTE
- VoLTE
- Unknown
- SIM
- Physical SIMSingle nano-SIM
- Bands
- Retailer Kyoex lists 4G FDD-LTE bands 1, 3, 5, 12. A separate US-compatibility guide claims bands 2, 4, 5, 12, 13, 17, 66. Those disagree materially - confirm with the seller before buying for US use.
- Carriers
- Originally au (KDDI). Sold SIM-unlocked by exporters. T-Mobile is generally the most viable US network for keitai; Verizon rarely activates VoLTE on non-certified devices.
Where to get one
- Regions
- Import only
- Countries
- Japan; exported worldwide via specialist sellers
- Also sold at
- Kyoex; eBay Japan sellers; y2kphones
Notes
MediaTek Helio A22 MT6761 per one spec listing, 1GB RAM / 8GB storage, microSD to 32GB. 8MP camera. 1,500mAh. Bluetooth 5.1, Wi-Fi b/g/n. MIL-grade shockproof, waterproof, dustproof. One of the handful of keitai repeatedly named as actually workable on US networks. Bands are the whole game with these - buy on the band list, not the looks.
Sources
Last checked 2026-09-15.Photo: Kyocera / NTT docomo.
