Duoqin
Duoqin Qin F21 Pro
A 2.8-inch touchscreen over a T9 keypad, on Android 11. The F22 Pro's smaller, older sibling.
$89 to $112
SUNSKY lists the 3GB/32GB model at $110 in white and $112.19 in black. An Alibaba buying guide puts AliExpress sellers at $89 to $95 for 3GB/32GB and $102 to $109 for 4GB/64GB, and eBay listings run about $130. The main English import store had both sizes sold out.
- TypeKeypad bar
- SoftwareAndroid
- Screen2.8" LCD
- Network2G / 3G / 4G
- Introduced 2021
Software and apps
- Operating system
- Android 11
- App store
- Full app store
- Web browser
- Yes
- Yes
- Sideloading
- Yes
- Yes
- Spotify
- Yes
- Podcasts
- Yes
- Apple Music
- Yes
- Your own MP3s
- Yes
- RCS messaging
- No
- Group texts
- Yes
- Android Auto
- YesOnly on the units that ship with the Play Store.
- Maps
- Yes: Google Maps, HERE, Waze
- Rideshare
- Yes: Uber, Lyft
Hardware
- Form factor
- Bar (touchscreen + T9 keypad)
- Screen
- 2.8-inch IPS touchscreen at 480x640, with a physical T9 keypad below it.
- Camera
- Yes
- Battery
- 2,120 mAh
- USB-C
- Yes
- Headphone jack
- No
- Weight
- 100 g
Connectivity
- Network
- 2G / 3G / 4G2G, 3G and 4G. Duoqin sells it in China as a phone for all three Chinese carriers. There is no 5G.
- VoLTE
- Yes
- SIM
- Physical SIMDuoqin's Chinese listing is a single nano SIM phone. The import stores describe the global unit as dual SIM, so ask the seller which unit you are getting. No microSD slot.
- Wi-Fi hotspot
- YesWi-Fi hotspot, per the import store's listing.
- Bands
- The import stores list GSM 850/900/1800/1900, WCDMA 850/900/1900/2100, FDD-LTE 1/2/3/5/7/8/17/20/28A and TDD-LTE 34/38/39/40/41 for the global unit. A narrower list of FDD-LTE 1/3/5/7/8 and TDD-LTE 38/40/41 also circulates, and the community guide to enabling US bands says the stock modem does not use bands 2, 4, 12, 13, 17, 66 or 71, so treat the seller's list with care.
- Works on
- T-Mobile
- Carriers
- The stock global unit lacks LTE bands 2, 4, 12, 13, 17, 66 and 71, which is most of what the US networks run, and Verizon needs band 13 outright. A Qin specialist store sells US-tuned builds it labels for T-Mobile, and one it labels for T-Mobile and Verizon, and a community guide reaches the same bands by unlocking the bootloader and flashing the modem files from the US-market Qin F30.
- Kosher version
- YesAmazon lists a Duoqin Kosher Qin F21 Pro with a kosher app store built in, and kosherdroid.com sells filtered Qin phones.
Where to get one
- Regions
- United States, Latin America, Import only
- Countries
- Built for the Chinese market. English-language import stores and AliExpress ship it everywhere else. It turns up on Mercado Livre in Brazil and from Brazilian shops, and on Mercado Libre listing pages in Argentina and Colombia. Amazon lists a US-band version in the US and in Mexico.
- Maker
- duoqin.com
- Also sold at
- qinphone.com (both memory sizes sold out when checked); qinf21pro.com (global version, plus US-tuned builds); SUNSKY ($110 to $112.19 for 3GB/32GB); HiTech Land; AliExpress; import sellers
Notes
The phone the F22 Pro grew out of, and the smaller of the two: 131.7 by 53.5 by 9.5 mm at 100 grams, with an infrared blaster on the top edge for the television. Same Google story as the F22 Pro. Duoqin's own build has no Google services, so the global units have the Play Store put on by the seller. Duoqin sells it in China as a student phone with an anti-addiction mode, and the Chinese unit is single SIM.
Last updated September 19, 2026.
