T-Mobile Sidekick 4G (SGH-T839) vs OnePlus 9 (LE2115 128GB)
Side by side comparison between T-Mobile Sidekick 4G vs OnePlus 9 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
6.55"
AMOLED
AMOLED
1080x2400
48
MP
MP
16mp
8GB
RAM
RAM
Octa-core
4500
mAh
mAh
(Non removable)
What's the better phone? OnePlus 9 (LE2115 128GB)
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!
4 Advantages 
28 Advantages | 8 Common items in both devices |
| Only digital zoom |
| Autofocus / PDAF: phase detection autofocus |
| Capacitive |
| Multitouch |
| Accelerometer |
| Ambient light sensor |
| Proximity sensor |
| + 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) | OnePlus 9 (LE2115 128GB) | |
| Change model | ||
| Model | Sidekick 4G (SGH-T839) | OnePlus 9 (LE2115 128GB) |
| Other model names | T-Mobile Sidekick 4G T839, Samsung SGH-T839 Sidekick 4G | OnePlus 9 5G LE2115 (Unlocked), BBK Lemonade |
| Country or region available |  USA |  Canada, USA |
| Brand | T-Mobile | OnePlus |
| Release date | 4/20/2011 | 3/26/2021, Announced: 3/23/2021 |
| Depth | 15 millimeters (0.59 inches) | 8.7 millimeters (0.34 inches) |
| Size (width x height) | 61 x 127 millimeters (2.4 x 5 in) | 74.2 x 160 millimeters (2.92 x 6.3 in) |
| Weight | 162 grams (5.67 ounces) | 192 grams (6.72 ounces) |
| Build, materials | feature not registered | Plastic body, glass front/back |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| T-Mobile Sidekick 4G (SGH-T839) | OnePlus 9 (LE2115 128GB) | |
| Display type | TFT LCD | Fluid AMOLED |
| Screen size | 3.5" inches | 6.55" inches |
| Screen-to-body ratio | ~45% (screen-to-body ratio) | ~87.2% (screen-to-body ratio) |
| Display resolution | 480x800 pixels | 1080x2400 pixels (20:9) |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 267 PPI | 402 PPI |
| Colors | 16 million | 1 billion |
| Scratch-resistant glass | Not supported | Gorilla Glass 5 |
| Refresh rate | feature not registered | 120Hz |
| Display features | feature not registered | 1100nits[peak] HDR10+ Always-On Display |
🤖 Operating System | ||
| T-Mobile Sidekick 4G (SGH-T839) | OnePlus 9 (LE2115 128GB) | |
| System version | Android 2.2.1 Froyo | Android 11 |
| Firmware update | feature not registered | Android 13 |
| User Interface | feature not registered | OxygenOS 12 / 13 |
⚙️ Processor | ||
| T-Mobile Sidekick 4G (SGH-T839) | OnePlus 9 (LE2115 128GB) | |
| Chipset | 32bit: Samsung Exynos 3 | 64bit: Qualcomm Snapdragon 888 (SM8350) (5nm) |
| CPU | Single-core, 1 processor: 1x 1GHz ARM Cortex-A8 (Single-core) | Octa-core, 3 processors: 1x 2.84GHz Kryo 680 (Single-core) 3x 2.42GHz Kryo 680 (Triple-core) 4x 1.8GHz Kryo 680 (Quad-core) |
| GPU graphical controller | PowerVR SGX540 | Qualcomm Adreno 660 (840MHz) |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| T-Mobile Sidekick 4G (SGH-T839) | OnePlus 9 (LE2115 128GB) | |
| RAM memory | 512MB | 8GB LPDDR5 |
| Internal storage | 1GB (350MB available) | 128GB (101GB available) UFS 3.1 |
| External storage | Until 32GB microSD, microSDHC (dedicated slot) | Not supported |
📶 Mobile networks | ||
| T-Mobile Sidekick 4G (SGH-T839) | OnePlus 9 (LE2115 128GB) | |
| Dual-SIM | Not supported | Not supported |
| SIM card | 1 slot (Single-SIM) Standard mini-SIM (2FF) | 1 slot (Single-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 800/1900, GSM 850/900/1800/1900 |
| Primary 3G network | UMTS 1700/2100 | CDMA2000 1xEV-DO UMTS 800/850/900/1700/1800/1900/2100 |
| Primary 4G network | Not supported | LTE Cat20 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 30, 32, 66, 71) TD-LTE (38, 39, 40, 41, 46, 48) VoLTE |
| Primary 5G network | Not supported | SA/NSA (1, 2, 3, 5, 7, 8, 20, 25, 28, 38, 40, 41, 48, 66, 71, 77, 78) |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+ | GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA |
| Secondary 2G network | Not supported | Not supported |
| Secondary 3G network | Not supported | Not supported |
| Secondary 4G network | Not supported | Not supported |
| Secondary data network | Not supported | Not supported |
📷 Camera | ||
| T-Mobile Sidekick 4G (SGH-T839) | OnePlus 9 (LE2115 128GB) | |
| Back camera (main camera) | 3.1 megapixels | (triple camera) 48 megapixels 50MP ultrawide f/2.214mm1/1.56"1.0µmAF 2MP monochrome f/2.4 |
| Main camera resolution | 2048x1536 pixels | 8000x6000 pixels |
| Video recording (primary) | VGA (720x480) 30 fps | 8K UHD (7680x4320) 30 fps |
| Flash | Not supported | Dual-LED flash |
| Focal aperture | feature not registered | f/1.8 (aperture) |
| Focal length | feature not registered | 23mm lens |
| Sensor size | feature not registered | 1/1.43" inches |
| Pixel size | feature not registered | 1.12µm 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/video on both cameras |
| Camera extras | feature not registered | 4K@30/60fps 1080p@30/60/240fps Hasselblad Color Calibration Sony IMX689, IMX766. IMX471 sensor |
📸 Front camera | ||
| T-Mobile Sidekick 4G (SGH-T839) | OnePlus 9 (LE2115 128GB) | |
| Front camera (secondary) | 0.3 megapixels | 16 megapixels |
| Front camera resolution | 640x480 pixels | 4608x3456 pixels |
| Video recording (secondary) | Not supported | Full HD (1920x1080) |
| Front flash | Not supported | Not supported |
| Focal aperture | feature not registered | f/2.4 (aperture) |
| Focal length | feature not registered | feature not registered |
| Sensor size | feature not registered | 1/3.06" inches |
| Pixel size | feature not registered | 1µm pixel |
🔉 Sound and multimedia | ||
| T-Mobile Sidekick 4G (SGH-T839) | OnePlus 9 (LE2115 128GB) | |
| Loudspeaker | Supported | Stereo sound with dual speakers 24-bit/192kHz Dolby Atmos |
| 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) | OnePlus 9 (LE2115 128GB) | |
| USB | MicroUSB 2.0 | USB 3.1 Type-C, USB OTG On-The-Go |
| Audio output | 3.5mm jack | Type-C reversible connector |
| 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 | Supported |
| GPS | A-GPS, GeoTagging | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou, SBAS |
| NFC | Not supported | Supported |
| Infrared port | feature not registered | Not supported |
🧭 Sensors | ||
| T-Mobile Sidekick 4G (SGH-T839) | OnePlus 9 (LE2115 128GB) | |
| Sensors | Accelerometer Ambient light sensor Proximity sensor | Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (under display) Gyroscope Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| T-Mobile Sidekick 4G (SGH-T839) | OnePlus 9 (LE2115 128GB) | |
| Battery type | Li-Ion: lithium-ion (Removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 1500 mAh | 4500 mAh |
| Charger, watts | Wired charging | 65W (10V/6.5A) Wired fast charging USB Power Delivery 1.0 |
| Inductive / wireless charging | feature not registered | 15W Qi Wireless charging (Qi/WPC) |
| 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) | OnePlus 9 (LE2115 128GB) | |
| 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: Astral Black, Arctic Sky, Winter Mist |
☢️ Radiation rate | ||
| T-Mobile Sidekick 4G (SGH-T839) | OnePlus 9 (LE2115 128GB) | |
| 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 |