Unihertz Tank vs Oukitel WP21
| Type | Touch | Touch |
| Waterproofness & dust-resistance | IP68 | IP68, IP69K |
| Dimensions | 175.60 x 85.30 x 23.90 mm | 177.30 x 84.30 x 14.80 mm |
| Weight | 560.00 g | 398.00 g |
| Display size | 6.81" | 6.78" |
| Display | Color / TFT 16M colors 60 Hz 1080 x 2340 px (6.81") 378 ppi | Color / IPS TFT 16M colors 120 Hz 1080 x 2460 px (6.78") 396 ppi |
| Display protection |   |  |
| Additional display | | |
| Protection of the secondary display | | |
| Talk time (max.) | 4G: 9000 min. (150.0 h) | 2G: 4110 min. (68.5 h) |
| Stand-by (max.) | 4G: 2380 h. (99.2 days) | 3G: 1150 h. (47.9 days) |
| Playback time (max.) | nd | Audio: 35 h (1.5 days) Video: 12 h (0.5 days) |
| Standard battery | Li-Ion 22000 mAhBuy powerbank
| Li-Po 9800 mAhBuy powerbank
|
| Quick battery charging | | |
| Wireless battery charging | | |
| Internal memory | 256 GB | 256 GB |
| RAM memory | 8 GB | 12 GB |
| Memory cards | | microSD, microSDHC, microSDXC up to 1000 GBBuy memory card |
| Operating system | Android 12 | Android 12 |
| Processor | MediaTek Helio G99 MT6789 | MediaTek Helio G99 MT6789 |
| Processor clock | 2200 MHz | 2200 MHz |
| GPU | ARM Mali-G57 MC2 | ARM Mali-G57 MC2 |
| Touchscreen | | |
| DualSIM | | |
| SIM cards standard | DualSIM(nanoSIM, nanoSIM) | DualSIM(nanoSIM, nanoSIM) |
| DualSIM mode | dual standby | dual standby |
| Hybrid DualSIM | | nanoSIM, microSD |
| Announced | 4Q 2022 | 4Q 2022 |
| Other names | - | - |
| GSM frequencies | 850 900 1800 1900 | 850 900 1800 1900 |
| UMTS | 850 900 1700 1900 2100 | 900 2100 |
| LTE standard | FDD LTE: 2600, 2100, 1900, 1800, 1700, 900, 850, 800, 700 TDD LTE: 2600, 2500, 2300, 2100, 1900 | FDD LTE: 2600, 2100, 1800, 900, 850, 800 |
| Standard 5G | | |
| CDMA | 850 1900 | |
| Standard TD-SCDMA | 1900 2000 | |
| UMA | | |
CAMERAS - BACK
| First camera | | |
| Camera type | Standard | Standard |
| Photo sensor model |  | Sony IMX686 |
| Photo matrix | 108 Mpx | 64 Mpx |
| Sensor size | | 1/1,72 |
| Pixel size | | 0,8 µm |
| Optical zoom | | |
| Flash | LED | LED |
| Dual-colour LED flash | | |
| Video formats | H.263, H.264, MPEG4 | H.264, H.265, MPEG4 - 30 fps |
| Additional | AF | AF, f/1.9 |
| Second camera | | |
| Photo sensor model | | Sony IMX350 |
| Photo matrix | 20 Mpx | 20 Mpx |
| Sensor size | | 1/2,78 |
| Pixel size | | 1 µm |
| Resolution | | 5184x3880 px |
| Optical zoom | | |
| Flash | LED | LED |
| Dual-colour LED flash | | |
| Video formats | H.263, H.264, MPEG4 | H.264, H.265, MPEG4 - 30 fps |
| Additional | FF | FF, f/2.0 |
| Third camera | | |
| Camera type | Macro | Macro |
| Photo sensor model | | GalaxyCore GC02M2 |
| Photo matrix | 2 Mpx | 2 Mpx |
| Sensor size | | 1/5 |
| Pixel size | | 1,75 µm |
| Resolution | | 1600x1200 px |
| Optical zoom | | |
| Number of lenses | | 3 |
| Flash | LED | LED |
| Dual-colour LED flash | | |
| Video formats | H.263, H.264, MPEG4 | H.264, H.265, MPEG4 - 30 fps |
| Additional | FF | FF, f/2.4 |
CAMERAS - FRONT
| First camera | | |
| Camera type | Portrait | Portrait |
| Photo matrix | 32 Mpx | 16 Mpx |
| Optical zoom | | |
| Flash | | |
| Dual-colour LED flash | | |
| Video formats | H.263, H.264, MPEG4 | H.264, H.265, MPEG4 - 30 fps |
| Additional | FF | FF |
SENSORS
| Accelerometer | | |
| Proximity | | |
| Light | | |
| Magnetometer | | |
| Gyroscope | | |
| Barometer | | |
| Altimeter | | |
| Gravity | | |
| Hall-effect | | |
| Iris scanner | | |
| Fingerprint scanner | | |
| Thermometer | | |
| Hygrometer | | |
Data transfer
| xHTML | | |
| WAP | v2.0 | v2.0 |
| HSCSD | | |
| HSDPA | 42.20 Mbit/s | 42.20 Mbit/s |
| HSUPA | 5.76 Mbit/s | 5.76 Mbit/s |
| HSPA | | |
| HSPA+ | | |
| LTE DL | - | - |
| LTE UP | - | 51.00 Mbit/s |
| WIMAX+ | | |
| GPRS | | |
| EDGE | | |
| Bluetooth | v5.3 | v5.0 |
| A2DP Profile | | |
| HDMI | | |
| WiFi | v802.11 a/b/g/n/ac | v802.11 a/b/g/n/ac |
| WiFi frequencies | 2,4 GHz; 5 GHz | 2,4 GHz; 5 GHz |
| WiFi Direct | | |
| WiFi Display | | |
| DLNA | | |
| Miracast | | |
| WiFi hotspot | | |
| IrDA | | |
| USB | v2.0 Type-C | v2.0 Type-C |
| GPS | | |
| A-GPS | | |
| GLONASS | | |
| Beidou | | |
| Galileo | | |
| QZSS | | |
| NFC | | |
COMMUNICATION AND MESSAGING
| Call waiting | | |
| Conferency | | |
| Call forwarding | | |
| Push To Talk | | |
| Instant Messenger | | |
| SMS | | |
| EMS | | |
| MMS | | |
| Dictionary | T9 | T9 |
| Swype | | |
| e-mail client | POP3, IMAP4, SMTP | POP3, IMAP4, SMTP |
| Hardware QWERTY keyboard | | |
| RSS Reader | | |
Multimedia
| Radio | | |
| MP3 | | |
| Stereo speakers | | 2 |
| Audio Jack | 3.5 mm | |
| HD Voice | | |
| Sound formats | AAC, AAC+, AMR, MID, WAV, eAAC+ | AAC, AAC+, AMR, MID, WAV, eAAC+ |
| Polyphony | | |
| Video ringtone | | |
| Ring composer | | |
| Games | | |
| Java | ART | ART |
| Videophone | | |
| DVB-H television | | |
| TV-Out | | |
PIM AND ADDITIONAL FUNCTIONS
| Watch | | |
| Stopwatch | | |
| Alarm | | |
| Calculator | | |
| Currency converter | | |
| Organizer | | |
| Calendar | | |
| Flight mode | | |
| SyncML | | |
| Data and fax | | |
| Screensaver | | |
| Themes | | |
| Interchangeable covers | | |
| Voice dial | | |
| Speakerphone | | |
| Recorder | | |
| Vibrations | | |