T-Mobile Sidekick 4G (SGH-T839) vs Xiaomi Black Shark 4S (128GB/12GB)
Side by side comparison between T-Mobile Sidekick 4G vs Xiaomi Black Shark 4S phones, differences, pros, cons and full specifications. What's the better?
,
3.5"
TFT
TFT
480x800
3.1
MP
MP
0.3mp
512MB
RAM
RAM
Single-core
1500
mAh
mAh
(Removable)
vs
6.67"
AMOLED
AMOLED
1080x2400
48
MP
MP
20mp
12GB
RAM
RAM
Octa-core
4500
mAh
mAh
(Non removable)
What's the better phone? Xiaomi Black Shark 4S (128GB/12GB)
The phonemore's choice is much more technical than personal. Therefore, you shouldn't only consider this. Our goal is to help you, but what's important to us may not be important to you. You decide which one is the best! Comment!
3 Advantages 
27 Advantages | 14 Common items in both devices |
| 16 million |
| Only digital zoom |
| Autofocus / PDAF: phase detection autofocus |
| Capacitive |
| Multitouch |
| Accelerometer |
| Ambient light sensor |
| +7 specs and more in the table below |
Check the comparison table below for more items that are not evaluated in comparison score above.
Highlight differences Clear highlight📱 Model features | ||
| T-Mobile Sidekick 4G (SGH-T839) | Xiaomi Black Shark 4S (128GB/12GB) | |
| Change model | ||
| Model | Sidekick 4G (SGH-T839) | Black Shark 4S (128GB/12GB) |
| Other model names | T-Mobile Sidekick 4G T839, Samsung SGH-T839 Sidekick 4G | 黑鲨4S, Black Shark 4S (128GB+12GB RAM) |
| Country or region available |  USA |  (Global, International) |
| Brand | T-Mobile | Xiaomi |
| Release date | 4/20/2011 | 10/16/2021, Announced: 10/13/2021 |
| Depth | 15 millimeters (0.59 inches) | 9.9 millimeters (0.39 inches) |
| Size (width x height) | 61 x 127 millimeters (2.4 x 5 in) | 76.21 x 163.69 millimeters (3 x 6.44 in) |
| Weight | 162 grams (5.67 ounces) | 210 grams (7.35 ounces) |
| Build, materials | feature not registered | Aluminum body, glass front, plastic back |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| T-Mobile Sidekick 4G (SGH-T839) | Xiaomi Black Shark 4S (128GB/12GB) | |
| Display type | TFT LCD | Super AMOLED |
| Screen size | 3.5" inches | 6.67" inches |
| Screen-to-body ratio | ~45% (screen-to-body ratio) | ~86.1% (screen-to-body ratio) |
| Display resolution | 480x800 pixels | 1080x2400 pixels (20:9) |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch 10-points |
| Pixel density (dot pitch) | 267 PPI | 395 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Not supported | Not supported |
| Refresh rate | feature not registered | 144Hz |
| Display features | feature not registered | 1300nits[peak] HDR10+ Always-On Display Touch Sampling Rate: 720Hz |
🤖 Operating System | ||
| T-Mobile Sidekick 4G (SGH-T839) | Xiaomi Black Shark 4S (128GB/12GB) | |
| System version | Android 2.2.1 Froyo | Android 11 |
| Firmware update | feature not registered | Android 12 |
| User Interface | feature not registered | Joy UI 12 / 13 |
⚙️ Processor | ||
| T-Mobile Sidekick 4G (SGH-T839) | Xiaomi Black Shark 4S (128GB/12GB) | |
| Chipset | 32bit: Samsung Exynos 3 | 64bit: Qualcomm Snapdragon 870 (SM8250-AC) (7nm) |
| CPU | Single-core, 1 processor: 1x 1GHz ARM Cortex-A8 (Single-core) | Octa-core, 3 processors: 1x 3.2GHz Kryo 585 (Single-core) 3x 2.42GHz Kryo 585 (Triple-core) 4x 1.8GHz Kryo 585 (Quad-core) |
| GPU graphical controller | PowerVR SGX540 | Qualcomm Adreno 650 (670MHz) |
| Performance (benchmark) | feature not registered | AnTuTu: 710538 (v9) Geekbench: 3451 (v5.1) |
💽 Memory and storage | ||
| T-Mobile Sidekick 4G (SGH-T839) | Xiaomi Black Shark 4S (128GB/12GB) | |
| RAM memory | 512MB | 12GB LPDDR5 |
| Internal storage | 1GB (350MB available) | 128GB (103GB available) UFS 3.1 |
| External storage | Until 32GB microSD, microSDHC (dedicated slot) | Not supported |
📶 Mobile networks | ||
| T-Mobile Sidekick 4G (SGH-T839) | Xiaomi Black Shark 4S (128GB/12GB) | |
| Dual-SIM | Not supported | Dual-SIM Standby - Call active on one sim card |
| SIM card | 1 slot (Single-SIM) Standard mini-SIM (2FF) | 2 slots (Dual-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 21/5.76 Mbps | 2000/1024 Mbps |
| Network technology | 2G, 3G | 2G, 3G, 4G, 5G |
| Frequency, bands | Expand band details Collapse details | |
| GSM MHz band | Quad-Band 850/900/1800/1900 | Quad-Band 850/900/1800/1900 |
| Primary 2G network | GSM 850/900/1800/1900 | CDMA 800, GSM 850/900/1800/1900 |
| Primary 3G network | UMTS 1700/2100 | CDMA2000 1xEV-DO TD-SCDMA 1900/2000 UMTS 800/850/900/1700/1900/2100 |
| Primary 4G network | Not supported | LTE Cat18 (1, 2, 3, 4, 5, 7, 8, 18, 19, 20, 26, 28) TD-LTE (34, 38, 39, 40, 41) VoLTE |
| Primary 5G network | Not supported | SA/NSA (1, 3, 8, 28, 41, 77, 78) |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+ | GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, TD-SCDMA, UMTS, TD-HSDPA, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA |
| Secondary 2G network | Not supported | GSM 850/900/1800/1900 |
| Secondary 3G network | Not supported | UMTS 800/850/900/1700/1900/2100 |
| Secondary 4G network | Not supported | LTE Cat18 (1, 2, 3, 4, 5, 7, 8, 18, 19, 20, 26, 28) TD-LTE (34, 38, 39, 40, 41) VoLTE |
| Secondary data network | Not supported | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA |
📷 Camera | ||
| T-Mobile Sidekick 4G (SGH-T839) | Xiaomi Black Shark 4S (128GB/12GB) | |
| Back camera (main camera) | 3.1 megapixels | (triple camera) 48 megapixels 8MP ultrawide f/2.2120°1/4"1.12µm 5MP macro f/2.4AF |
| Main camera resolution | 2048x1536 pixels | 8000x6000 pixels |
| Video recording (primary) | VGA (720x480) 30 fps | 4K UHD (3840x2160) 60 fps |
| Flash | Not supported | LED flash |
| Focal aperture | feature not registered | f/1.8 (aperture) |
| Focal length | feature not registered | 26mm (lens) |
| Sensor size | feature not registered | 1/2" inches |
| Pixel size | feature not registered | 0.8µm pixel |
| Autofocus | Autofocus | PDAF: phase detection autofocus |
| Touch focus | feature not registered | Supported |
| Image stabilization | feature not registered | EIS: Digital stabilization |
| Zoom | Only digital zoom | Only digital zoom |
| Face/smile detection | feature not registered | Face detection, Smile detection |
| BSI sensor | feature not registered | Supported |
| HDR | feature not registered | HDR photo on both cameras |
| Camera extras | feature not registered | 4K@30/60fps 1080p@30/60fps 1080p@240/960fps (slow motion) |
📸 Front camera | ||
| T-Mobile Sidekick 4G (SGH-T839) | Xiaomi Black Shark 4S (128GB/12GB) | |
| Front camera (secondary) | 0.3 megapixels | 20 megapixels |
| Front camera resolution | 640x480 pixels | 5184x3840 pixels |
| Video recording (secondary) | Not supported | Full HD (1920x1080) |
| Front flash | Not supported | Not supported |
| Focal aperture | feature not registered | f/2.0 (aperture) |
| Focal length | feature not registered | feature not registered |
| Sensor size | feature not registered | feature not registered |
| Pixel size | feature not registered | 0.8µm pixel |
🔉 Sound and multimedia | ||
| T-Mobile Sidekick 4G (SGH-T839) | Xiaomi Black Shark 4S (128GB/12GB) | |
| Loudspeaker | Supported | Stereo sound with dual speakers 24-bit/192kHz |
| Active noise cancellation | feature not registered | 2 microphones or more |
| Radio | Not supported | Not supported |
| TV | Not supported | Not supported |
| Video formats | MP4, H.264, H.263 | MP4, H.265, H.264, H.263, XviD, MKV |
| Audio formats | MP3, WAV, eAAC+ | MP3, WAV, WMA, eAAC+, FLAC |
🔌 Connectivity | ||
| T-Mobile Sidekick 4G (SGH-T839) | Xiaomi Black Shark 4S (128GB/12GB) | |
| USB | MicroUSB 2.0 | USB 2.0 Type-C, USB OTG On-The-Go |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | Not supported | USB Type-C (reversible) |
| Bluetooth | 3.0 + A2DP | 5.2 + A2DP/LE |
| WiFi | 802.11 b/g/n [wifi4] (2.4GHz) | 802.11 a/b/g/n/ac/ax [wifi6] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot |
| DLNA | feature not registered | Not supported |
| GPS | A-GPS, GeoTagging | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, QZSS |
| NFC | Not supported | Supported |
| Infrared port | feature not registered | Not supported |
🧭 Sensors | ||
| T-Mobile Sidekick 4G (SGH-T839) | Xiaomi Black Shark 4S (128GB/12GB) | |
| Sensors | Accelerometer Ambient light sensor Proximity sensor | Accelerometer Ambient light sensor Barometer Compass Face unlock 2D Fingerprint sensor (side-mounted) Gyroscope Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| T-Mobile Sidekick 4G (SGH-T839) | Xiaomi Black Shark 4S (128GB/12GB) | |
| Battery type | Li-Ion: lithium-ion (Removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 1500 mAh | 4500 mAh |
| Charger, watts | Wired charging | 120W Wired fast charging Reverse charging by cable Quick Charge 4 USB Power Delivery 3.0 |
| Inductive / wireless charging | feature not registered | Not supported |
| Talk time autonomy | 6.5 hours | feature not registered |
| Standby | 456 hours (19 days) | feature not registered |
➕ Other features | ||
| T-Mobile Sidekick 4G (SGH-T839) | Xiaomi Black Shark 4S (128GB/12GB) | |
| Call control | Voice recorder | Voice dialing, Voice recorder, Voice commands |
| Messaging | SMS (T9), MMS, E-mail, Push mail | SMS (T9), MMS, E-mail, Push mail |
| Hands-free calling | Supported | Supported |
| Video calling | Supported | Supported |
| Ringtones | Polyphonic and customized | Polyphonic and customized |
| Web browser | HTML, XHTML, Flash player | HTML, XHTML, HTML5 |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Retractable QWERTY keyboard | Not supported |
| Miscellaneous | • Colors: Matte black, Pearl magenta • 2GB microSD included • Samsung TouchWiz UI • Optical trackpad • HAC M3/T3 • T-Mobile TV • DLNA • WiFi hotspot • Java framework | • Colors: Black, White, Gundam • Liquid Cooling System • Physical pop-up gaming triggers |
☢️ Radiation rate | ||
| T-Mobile Sidekick 4G (SGH-T839) | Xiaomi Black Shark 4S (128GB/12GB) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | feature not registered |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | feature not registered |