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Flip phones and basic phones · Sharp · Japan
Sharp AQUOS Keitai 4 (SoftBank / Y!mobile)
On sale Not available in the US No Google
Ships with: Sharp feature-phone software (no Google Play)
Flip · 3.4" · 1 GB RAM · 8 GB · 1,680 mAh · 121 g · 115 × 51 × 16.9 mm
Checked against the makers' own pages · Last reviewed October 15, 2026
The AQUOS Keitai 4 (model A206SH) is a flip phone made by Sharp for SoftBank and its budget brand Y!mobile in Japan. SoftBank launched it on Oct. 28, 2022 and still lists it at ¥32,400 as of Oct. 15, 2026. It is not on Google's list of Google Play devices. SoftBank lists only LTE bands 1, 3 and 8 and doesn't guarantee it on other carriers' networks. [1][2][3][4][5][6]
On this page
What it is
Sharp designed the AQUOS Keitai 4 around calls. Sharp says a separate rear speaker makes the ringtone about twice as loud as its 2019 model (SoftBank names the AQUOS Keitai 3), and a large 15 x 11 mm receiver makes voices easier to hear. It supports VoLTE (HD+) calling.
It has a 3.4-inch qHD (540 x 960) main screen, a 0.9-inch OLED outer screen, an 8 MP camera, a removable 1,680 mAh battery and a microSD slot. Sharp rates it IPX5/IPX8 waterproof, IP5X dustproof and compliant with MIL-STD-810H drop and other tests. [1][5][7]
Specifications
| Display | Main: 3.4-inch TFT, qHD (540 x 960); outer: 0.9-inch OLED (36 x 128) [7] |
|---|---|
| Chip | Qualcomm 215, 1.3 GHz quad-core [7] |
| RAM | About 1 GB [7] |
| Storage | About 8 GB; microSD/microSDHC up to 32 GB [7] |
| Battery | 1,680 mAh, removable pack; about 750 min talk, 500 h standby [6][7] |
| Charging | USB-C; about 120 min with SoftBank's SB-AC22-TCPD adapter (sold separately) [7] |
| Dimensions | 115 x 51 x 16.9 mm (closed) [7] |
| Weight | About 121 g with battery [7] |
| Rear camera | 8 MP back-illuminated CMOS [7] |
| Front camera | None [5] |
| 2G/3G bands | GSM 900/1800/1900 MHz (abroad); W-CDMA I, VIII [4] |
| 4G LTE bands | 1, 3, 8 [4] |
| 5G bands | None [4] |
| Wi-Fi / Bluetooth | Wi-Fi 802.11 b/g/n (2.4 GHz); Bluetooth 5.0 [7] |
| Water/dust rating | IPX5/IPX8, IP5X; MIL-STD-810H [7] |
Apps and Google
This is a feature phone, not a smartphone. Sharp's spec page lists built-in tools: calendar, alarm, calculator, notepad, timer, stopwatch, world clock, voice recorder and pedometer. SoftBank's manual covers mail, a web browser, tethering and SoftBank's own services, and does not mention Google Play or any Google app.
Google's list of Google Play supported devices (checked Oct. 15, 2026) has no entry for the A206SH. [3][6][7]
Where it is sold and how to get one
SoftBank sells the AQUOS Keitai 4 in its stores and online shop. On Oct. 15, 2026, SoftBank's feature-phone list showed it at ¥32,400, next to the DIGNO Keitai 4 and Kantan Keitai 11. Sharp says it was launched for both SoftBank and Y!mobile.
SoftBank's shop is in Japanese and is for SoftBank customers in Japan. We did not find an importer listing for a new unit that we could verify on Oct. 15, 2026. Its LTE band list is short (see below), so compare it with your carrier's bands before importing one. [1][2][5]
Will it work in the US?
SoftBank's band sheet lists LTE bands 1, 3 and 8, W-CDMA (3G) bands I and VIII, and GSM 900/1800/1900 MHz for use abroad, with no 5G. Compare that list with your carrier's bands in our guide to US carrier bands. SoftBank also says it doesn't guarantee the phone on networks other than its own. [4]
What's different
- Removable 1,680 mAh battery; about 750 min talk and 500 h standby (SoftBank figures)
- Loud rear speaker and large earpiece
- Wi-Fi tethering for up to 10 devices
- "World phone" roaming support
- No Osaifu-Keitai (tap-to-pay) and no TV tuner
Questions people ask
Does the AQUOS Keitai 4 work in the US?
SoftBank lists only LTE bands 1, 3 and 8 and does not guarantee the phone on networks other than its own. Compare those bands with your carrier's before buying. [4]
Can the AQUOS Keitai 4 run Android apps?
It is not on Google's list of Google Play devices, and SoftBank's manual lists no app store. It comes with Sharp's built-in tools. [3][6][7]
Is the AQUOS Keitai 4 still sold?
Yes. SoftBank listed it at ¥32,400 on Oct. 15, 2026. [2]
Sources (8)
- AQUOS ケータイ4 | スマートフォン・携帯電話 | ソフトバンク, SoftBank. Checked October 15, 2026.
- ケータイ | 製品情報 | ソフトバンク, SoftBank. Checked October 15, 2026.
- Google Play supported devices (supported_devices.csv), Google. Checked October 15, 2026.
- SHARP AQUOSケータイ4 搭載周波数帯一覧, SoftBank. Checked October 15, 2026.
- 「AQUOS ケータイ4」をソフトバンク株式会社の“ソフトバンク”および“ワイモバイル”より発売, Sharp. Checked October 15, 2026.
- AQUOS ケータイ4 取扱説明書, SoftBank (Y!mobile) / Sharp. Checked October 15, 2026.
- AQUOS ケータイ4 ソフトバンクのスペック・性能｜AQUOS：シャープ, Sharp. Checked October 15, 2026.
- SIMロック解除機能が搭載されている機種を教えてください。, SoftBank. Checked October 15, 2026.