T-Mobile Sidekick 4G (SGH-T839) vs Samsung Galaxy Fold (SM-F900F)
Side by side comparison between T-Mobile Sidekick 4G vs Samsung Galaxy Fold 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
7.3"
AMOLED
AMOLED
1536x2152
12.2
MP
MP
10mp
12GB
RAM
RAM
Octa-core
4380
mAh
mAh
(Non removable)
What's the better phone? Samsung Galaxy Fold (SM-F900F)
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 
29 Advantages | 11 Common items in both devices |
| 16 million |
| Autofocus / PDAF: phase detection autofocus on both cameras |
| Capacitive |
| Multitouch |
| Accelerometer |
| Ambient light sensor |
| Proximity sensor |
| +4 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) | Galaxy Fold (SM-F900F) | |
| Change model | ||
| Model | Sidekick 4G (SGH-T839) | Galaxy Fold (SM-F900F) |
| Other model names | T-Mobile Sidekick 4G T839, Samsung SGH-T839 Sidekick 4G | Galaxy Fold F900F (Dual-SIM), Samsung Winner |
| Country or region available |  USA |  (Global, International) |
| Brand | T-Mobile | Samsung |
| Release date | 4/20/2011 | 4/26/2019, Announced: 2/28/2019 |
| Depth | 15 millimeters (0.59 inches) | 6.9 millimeters (0.27 inches) |
| Size (width x height) | 61 x 127 millimeters (2.4 x 5 in) | 117.9 x 160.9 millimeters (4.64 x 6.33 in) |
| Weight | 162 grams (5.67 ounces) | 263 grams (9.21 ounces) |
| Build, materials | feature not registered | Aluminum frame, flexible plastic screen, glass back Folded: 15.5mm x 62.9mm x 160.9mm |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| T-Mobile Sidekick 4G (SGH-T839) | Galaxy Fold (SM-F900F) | |
| Display type | TFT LCD | Dynamic AMOLED |
| Screen size | 3.5" inches | 7.3" inches |
| Screen-to-body ratio | ~45% (screen-to-body ratio) | ~85.7% (screen-to-body ratio) |
| Display resolution | 480x800 pixels | 1536x2152 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 267 PPI | 362 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Not supported | Not supported |
| Refresh rate | feature not registered | 60Hz |
| Display features | feature not registered | HDR10+ Extra display: Super AMOLED 4.6" (720x1680) |
🤖 Operating System | ||
| T-Mobile Sidekick 4G (SGH-T839) | Galaxy Fold (SM-F900F) | |
| System version | Android 2.2.1 Froyo | Android 9.0 Pie |
| Firmware update | feature not registered | Android 12 |
| User Interface | feature not registered | One UI 2.5 / 3.1 / 4.0 |
⚙️ Processor | ||
| T-Mobile Sidekick 4G (SGH-T839) | Galaxy Fold (SM-F900F) | |
| Chipset | 32bit: Samsung Exynos 3 | 64bit: Qualcomm Snapdragon 855 (SM8150) (7nm) |
| CPU | Single-core, 1 processor: 1x 1GHz ARM Cortex-A8 (Single-core) | Octa-core, 3 processors: 1x 2.84GHz Kryo 485 (Single-core) 3x 2.42GHz Kryo 485 (Triple-core) 4x 1.78GHz Kryo 485 (Quad-core) |
| GPU graphical controller | PowerVR SGX540 | Qualcomm Adreno 640 (585MHz) |
| Performance (benchmark) | feature not registered | AnTuTu: 363016 (v7) Geekbench: 11028 (v4.4) GFXBench: 32fps (ES 3.1 onscreen) |
💽 Memory and storage | ||
| T-Mobile Sidekick 4G (SGH-T839) | Galaxy Fold (SM-F900F) | |
| RAM memory | 512MB | 12GB LPDDR4X |
| Internal storage | 1GB (350MB available) | 512GB (462GB available) UFS 3.0 |
| External storage | Until 32GB microSD, microSDHC (dedicated slot) | Not supported |
📶 Mobile networks | ||
| T-Mobile Sidekick 4G (SGH-T839) | Galaxy Fold (SM-F900F) | |
| 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) + e-SIM |
| Maximum Download / Upload | 21/5.76 Mbps | 1200/150 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 | TD-SCDMA 1900/2000 UMTS 850/900/1700/1900/2100 |
| Primary 4G network | Not supported | LTE Cat18 (1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 29, 30, 66, 71) TD-LTE (38, 39, 40, 41) VoLTE |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+ | GPRS, EDGE, TD-SCDMA, UMTS, TD-HSDPA, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A |
| Secondary 2G network | Not supported | GSM 850/900/1800/1900 |
| Secondary 3G network | Not supported | UMTS 850/900/1700/1900/2100 |
| Secondary 4G network | Not supported | LTE Cat18 (1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 29, 30, 66, 71) TD-LTE (38, 39, 40, 41) VoLTE |
| Secondary data network | Not supported | GPRS, EDGE, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A |
📷 Camera | ||
| T-Mobile Sidekick 4G (SGH-T839) | Galaxy Fold (SM-F900F) | |
| Back camera (main camera) | 3.1 megapixels | (triple camera) 12.2 megapixels 12MP telephoto f/2.41/3.6"52mm1.0µmAFOIS2x-optical-zoom 16MP ultrawide f/2.212mm1/3.1"1.0µm |
| Main camera resolution | 2048x1536 pixels | 4032x3024 pixels |
| Video recording (primary) | VGA (720x480) 30 fps | 4K UHD (3840x2160) 60 fps |
| Flash | Not supported | LED flash |
| Focal aperture | feature not registered | f/1.5 (aperture) |
| Focal length | feature not registered | 26mm (lens) |
| Sensor size | feature not registered | 1/2.55" inches |
| Pixel size | feature not registered | 1.4µm pixel |
| Autofocus | Autofocus | PDAF: phase detection autofocus on both cameras |
| Touch focus | feature not registered | Supported |
| Image stabilization | feature not registered | OIS: Optical stabilization |
| Zoom | Only digital zoom | Digital and optical 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@60fps 1080p@30/60fps 1080p@240fps (slow motion) 720p@960fps (slow motion) HDR10 Cover camera: 10MP (f/2.2) |
📸 Front camera | ||
| T-Mobile Sidekick 4G (SGH-T839) | Galaxy Fold (SM-F900F) | |
| Front camera (secondary) | 0.3 megapixels | (dual front camera) 10 megapixels 8MP depth f/1.924mm1.22µm |
| Front camera resolution | 640x480 pixels | 3872x2592 pixels |
| Video recording (secondary) | Not supported | 4K UHD (3840x2160) |
| Front flash | Not supported | Not supported |
| Focal aperture | feature not registered | f/2.2 (aperture) |
| Focal length | feature not registered | 26mm (lens) |
| Sensor size | feature not registered | 1/3" inches |
| Pixel size | feature not registered | 1.22µm pixel |
🔉 Sound and multimedia | ||
| T-Mobile Sidekick 4G (SGH-T839) | Galaxy Fold (SM-F900F) | |
| Loudspeaker | Supported | Stereo sound 32-bit/384kHz Dolby Atmos Tuned by AKG |
| 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) | Galaxy Fold (SM-F900F) | |
| 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 | 5.0 + 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, GALILEO, BeiDou |
| NFC | Not supported | Supported |
| Infrared port | feature not registered | Not supported |
🧭 Sensors | ||
| T-Mobile Sidekick 4G (SGH-T839) | Galaxy Fold (SM-F900F) | |
| Sensors | Accelerometer Ambient light sensor Proximity sensor | Accelerometer Ambient light sensor ANT+ Compass Face unlock 2D Fingerprint sensor (side-mounted) Gyroscope Hall effect Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| T-Mobile Sidekick 4G (SGH-T839) | Galaxy Fold (SM-F900F) | |
| Battery type | Li-Ion: lithium-ion (Removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 1500 mAh | 4380 mAh |
| Charger, watts | Wired charging | 15W Wired fast charging |
| Inductive / wireless charging | feature not registered | 15W Qi wireless charging 9W Reverse wireless charging |
| Talk time autonomy | 6.5 hours | 32 hours (1.3 days) |
| Standby | 456 hours (19 days) | feature not registered |
➕ Other features | ||
| T-Mobile Sidekick 4G (SGH-T839) | Galaxy Fold (SM-F900F) | |
| 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: Black, Space Silver, Martian Green, Astro Blue • Samsung DeX • Samsung Pay |
☢️ Radiation rate | ||
| T-Mobile Sidekick 4G (SGH-T839) | Galaxy Fold (SM-F900F) | |
| 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 |