T-Mobile Sidekick 4G (SGH-T839) vs Xiaomi Redmi Note 7 (12MP 64GB)
Side by side comparison between T-Mobile Sidekick 4G vs Xiaomi Redmi Note 7 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
6.3"
IPS
IPS
1080x2340
12
MP
MP
13mp
4GB
RAM
RAM
Octa-core
4000
mAh
mAh
(Non removable)
What's the better phone? Xiaomi Redmi Note 7 (12MP 64GB)
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!
2 Advantages 
28 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) | Redmi Note 7 (12MP 64GB) | |
| Change model | ||
| Model | Sidekick 4G (SGH-T839) | Redmi Note 7 (12MP 64GB) |
| Other model names | T-Mobile Sidekick 4G T839, Samsung SGH-T839 Sidekick 4G | Xiaomi Note 7 M1901F7H, M1901F7I, Xiaomi Lavender |
| Country or region available |  USA |  India |
| Brand | T-Mobile | Xiaomi |
| Release date | 4/20/2011 | 3/13/2019, Announced: 1/10/2019 |
| Depth | 15 millimeters (0.59 inches) | 8.1 millimeters (0.32 inches) |
| Size (width x height) | 61 x 127 millimeters (2.4 x 5 in) | 75.21 x 159.21 millimeters (2.96 x 6.27 in) |
| Weight | 162 grams (5.67 ounces) | 186 grams (6.51 ounces) |
| Build, materials | feature not registered | Plastic body, glass front/back Back: Gorilla Glass 5 |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| T-Mobile Sidekick 4G (SGH-T839) | Redmi Note 7 (12MP 64GB) | |
| Display type | TFT LCD | TFT IPS LCD |
| Screen size | 3.5" inches | 6.3" inches |
| Screen-to-body ratio | ~45% (screen-to-body ratio) | ~81.4% (screen-to-body ratio) |
| Display resolution | 480x800 pixels | 1080x2340 pixels (19.5:9) |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 267 PPI | 409 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Not supported | Gorilla Glass 5 |
| Refresh rate | feature not registered | 60Hz |
| Display features | feature not registered | Not supported |
🤖 Operating System | ||
| T-Mobile Sidekick 4G (SGH-T839) | Redmi Note 7 (12MP 64GB) | |
| System version | Android 2.2.1 Froyo | Android 9.0 Pie |
| Firmware update | feature not registered | Android 10 |
| User Interface | feature not registered | MIUI 10 / 11 / 12 |
⚙️ Processor | ||
| T-Mobile Sidekick 4G (SGH-T839) | Redmi Note 7 (12MP 64GB) | |
| Chipset | 32bit: Samsung Exynos 3 | 64bit: Qualcomm Snapdragon 660 (SDM660) (14nm) |
| CPU | Single-core, 1 processor: 1x 1GHz ARM Cortex-A8 (Single-core) | Octa-core, 2 processors: 4x 2.2GHz Kryo 260 Gold (Quad-core) 4x 1.8GHz Kryo 260 Silver (Quad-core) |
| GPU graphical controller | PowerVR SGX540 | Qualcomm Adreno 512 (650MHz) |
| Performance (benchmark) | feature not registered | AnTuTu: 139075 (v7) Geekbench: 5411 (v4.4) GFXBench: 7.7fps (ES 3.1 onscreen) |
💽 Memory and storage | ||
| T-Mobile Sidekick 4G (SGH-T839) | Redmi Note 7 (12MP 64GB) | |
| RAM memory | 512MB | 4GB LPDDR4X |
| Internal storage | 1GB (350MB available) | 64GB (51GB available) eMMC 5.1 |
| External storage | Until 32GB microSD, microSDHC (dedicated slot) | Until 256GB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot) |
📶 Mobile networks | ||
| T-Mobile Sidekick 4G (SGH-T839) | Redmi Note 7 (12MP 64GB) | |
| Dual-SIM | Not supported | Dual-SIM Standby - Call active on one sim card (hybrid slot/shares the same microSD slot) |
| SIM card | 1 slot (Single-SIM) Standard mini-SIM (2FF) | 2 slots (Dual-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 21/5.76 Mbps | 450/50 Mbps |
| Network technology | 2G, 3G | 2G, 3G, 4G |
| 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 | GSM 850/900/1800/1900 |
| Primary 3G network | UMTS 1700/2100 | M1901F7H version: UMTS 850/900/1700/1900/2100 M1901F7I version: UMTS 850/900/1900/2100 |
| Primary 4G network | Not supported | LTE Cat9 VoLTE M1901F7H version: LTE (1, 2, 3, 4, 5, 7, 28) TD-LTE (38, 40, 41) M1901F7I version: LTE (1, 3, 5, 7, 8, 20) TD-LTE (38, 40, 41) |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+ | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A |
| Secondary 2G network | Not supported | GSM 850/900/1800/1900 |
| Secondary 3G network | Not supported | M1901F7H version: UMTS 850/900/1700/1900/2100 M1901F7I version: UMTS 850/900/1900/2100 |
| Secondary 4G network | Not supported | LTE Cat9 VoLTE M1901F7H version: LTE (1, 2, 3, 4, 5, 7, 28) TD-LTE (38, 40, 41) M1901F7I version: LTE (1, 3, 5, 7, 8, 20) TD-LTE (38, 40, 41) |
| Secondary data network | Not supported | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A |
📷 Camera | ||
| T-Mobile Sidekick 4G (SGH-T839) | Redmi Note 7 (12MP 64GB) | |
| Back camera (main camera) | 3.1 megapixels | (dual camera) 12 megapixels 2MP depth f/2.4 |
| Main camera resolution | 2048x1536 pixels | 4000x3000 pixels |
| Video recording (primary) | VGA (720x480) 30 fps | Full HD (1920x1080) 60 fps |
| Flash | Not supported | Dual-LED flash |
| Focal aperture | feature not registered | f/2.2 (aperture) |
| Focal length | feature not registered | feature not registered |
| Sensor size | feature not registered | 1/2.9" inches |
| Pixel size | feature not registered | 1.25µm 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 | Not supported |
| HDR | feature not registered | HDR photo on both cameras |
| Camera extras | feature not registered | 1080p@30/60fps 1080p@120fps (slow motion) |
📸 Front camera | ||
| T-Mobile Sidekick 4G (SGH-T839) | Redmi Note 7 (12MP 64GB) | |
| Front camera (secondary) | 0.3 megapixels | 13 megapixels |
| Front camera resolution | 640x480 pixels | 4128x3096 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 | 1.12µm pixel |
🔉 Sound and multimedia | ||
| T-Mobile Sidekick 4G (SGH-T839) | Redmi Note 7 (12MP 64GB) | |
| Loudspeaker | Supported | Mono sound (not stereo) |
| Active noise cancellation | feature not registered | 2 microphones or more |
| Radio | Not supported | FM |
| 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) | Redmi Note 7 (12MP 64GB) | |
| USB | MicroUSB 2.0 | USB 2.0 Type-C reversible connector |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | Not supported | Not supported |
| Bluetooth | 3.0 + A2DP | 5.0 + A2DP/LE |
| WiFi | 802.11 b/g/n [wifi4] (2.4GHz) | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot |
| DLNA | feature not registered | Not supported |
| GPS | A-GPS, GeoTagging | A-GPS, GeoTagging, GLONASS, BeiDou |
| NFC | Not supported | Not supported |
| Infrared port | feature not registered | Supported |
🧭 Sensors | ||
| T-Mobile Sidekick 4G (SGH-T839) | Redmi Note 7 (12MP 64GB) | |
| Sensors | Accelerometer Ambient light sensor Proximity sensor | Accelerometer Ambient light sensor Compass Face unlock 2D Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| T-Mobile Sidekick 4G (SGH-T839) | Redmi Note 7 (12MP 64GB) | |
| Battery type | Li-Ion: lithium-ion (Removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 1500 mAh | 4000 mAh |
| Charger, watts | Wired charging | 18W Wired fast charging Quick Charge 4 |
| 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) | Redmi Note 7 (12MP 64GB) | |
| Call control | Voice recorder | Voice dialing, Voice recorder |
| 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: Space black, Nebula red, Neptune blue |
☢️ Radiation rate | ||
| T-Mobile Sidekick 4G (SGH-T839) | Redmi Note 7 (12MP 64GB) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | 0.962W/kg (head), 0.838W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | feature not registered |