Sigma X-Treme PQ28 vs BlackBerry DTEK50
| Type | Touch | Touch |
| Waterproofness & dust-resistance | IP68 |  |
| Dimensions | 145.00 x 75.00 x 14.00 mm | 147.00 x 72.50 x 7.40 mm |
| Weight | 217.00 g | 135.00 g |
| Display size | 5.00" | 5.20" |
| Display | Color / IPS TFT 16M colors 720 x 1280 px (5.00") 294 ppi | Color / IPS TFT 16M colors 1080 x 1920 px (5.20") 424 ppi |
| Display protection | Corning Gorilla Glass Buy screen protector
 |  |
| Additional display | | |
| Protection of the secondary display | | |
| Talk time (max.) | 3G: 840 min. (14.0 h) | 2G: 1020 min. (17.0 h) |
| Stand-by (max.) | 3G: 336 h. (14.0 days) | 2G: 576 h. (24.0 days) |
| Playback time (max.) | Video: 14 h (0.6 days) | Audio: 40 h (1.7 days) Video: 8 h (0.3 days) |
| Standard battery | Li-Po 5000 mAhBuy powerbank
| Li-Ion 2610 mAhBuy powerbank
|
| Quick battery charging | Pump Express | Quick Charge 2.0 |
| Wireless battery charging | | |
| Internal memory | 16 GB | 16 GB |
| RAM memory | 2 GB | 3 GB |
| Memory cards |  microSD, microSDHC, microSDXC up to 32 GBBuy memory card | microSD, microSDHC, microSDXC up to 2000 GBBuy memory card |
| Operating system | Android 7.0 Nougat | Android 6.0 Marshmallow |
| Processor | MediaTek MT6737T | Qualcomm Snapdragon 617 8952 |
| Processor clock | 1500 MHz | 1500 MHz |
| GPU | ARM Mali-T720 MP2 @600 MHz | Adreno 405 |
| Touchscreen | | |
| DualSIM | | |
| SIM cards standard | DualSIM(nanoSIM, nanoSIM) | |
| DualSIM mode | dual standby | nd |
| Hybrid DualSIM | nanoSIM, microSD | nd |
| Announced | 2Q 2018 | 3Q 2016 |
| Other names | - | - |
| GSM frequencies | 850 900 1800 1900 | 850 900 1800 1900 |
| UMTS | 850 1900 2100 | 850 900 1900 2100 |
| LTE standard | FDD LTE: 2600, 2100, 1800, 900, 800 | FDD LTE: 2600, 2100, 1900, 1800, 900, 800, 700 TDD LTE: 2600, 2500, 2300 |
| Standard 5G | | |
| CDMA | | |
| Standard TD-SCDMA | | |
| UMA | | |
CAMERAS - BACK
| First camera | | |
| Photo sensor model | Sony IMX219 | |
| Photo matrix | 8 Mpx | 13 Mpx |
| Resolution | 3280x2464 px | 4128x3096 px |
| Optical zoom | | |
| Digital zoom | | 4x |
| Flash | LED | LED |
| Dual-colour LED flash | | 1+1 |
| Video resolution | | 1920x1080 px |
| Video formats | H.263, H.264, MPEG4 | MPEG4, H.263, H.264 - 30 fps |
| Additional | AF | AF, EIS, f/2.0 |
CAMERAS - FRONT
| First camera | | |
| Photo matrix | 2 Mpx | 8 Mpx |
| Resolution | | 3264x2448 px |
| Optical zoom | | |
| Flash | | |
| Dual-colour LED flash | | |
| Video formats | H.263, H.264, MPEG4 | MPEG4, H.263, H.264 - 30 fps |
| Additional | FF | FF, EIS, f/2.2 |
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 | 21.10 Mbit/s | |
| HSUPA | 5.76 Mbit/s | |
| HSPA | | |
| HSPA+ | | |
| LTE DL | - | |
| LTE UP | 51.00 Mbit/s | |
| WIMAX+ | | |
| GPRS | | |
| EDGE | | |
| Bluetooth | v4.0 | v4.2 LE |
| A2DP Profile | | |
| HDMI | | |
| WiFi | v802.11 b/g/n | v802.11 a/b/g/n/ac |
| WiFi frequencies | 2,4 GHz | 2,4 GHz; 5 GHz |
| WiFi Direct | | |
| WiFi Display | | |
| DLNA | | |
| Miracast | | |
| WiFi hotspot | | |
| IrDA | | |
| USB | v2.0 | v2.0 |
| 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 | XT9 |
| 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 | 3.5 mm |
| HD Voice | | |
| Sound formats | AAC, AAC+, AMR, MID, WAV, eAAC+ | AAC, AWB, FLAC, IMY, MID, OGG, OTA, RTTTL, RTX, WAV, WEBM, WMV, XMF |
| 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 | | |