T-Mobile Sidekick 4G (SGH-T839) vs Sony Ericsson Xperia mini (ST15i)
Side by side comparison between T-Mobile Sidekick 4G vs Sony Ericsson Xperia mini phones, differences, pros, cons and full specifications. What's the better?
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3.5"
TFT
TFT
480x800
3.1
MP
MP
0.3mp
512MB
RAM
RAM
Single-core
1500
mAh
mAh
(Removable)
vs
What's the better phone? T-Mobile Sidekick 4G (SGH-T839)
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!
10 Advantages 
10 Advantages | 19 Common items in both devices |
| 512MB / 512MB LPDDR |
| 1GB (350MB available) / 1GB (320MB available) |
| Until 32GB microSD, microSDHC |
| 16 million |
| Only digital zoom |
| Autofocus |
| Capacitive |
| +12 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) | Sony Ericsson Xperia mini (ST15i) | |
| Change model | ||
| Model | Sidekick 4G (SGH-T839) | Xperia mini (ST15i) |
| Other model names | T-Mobile Sidekick 4G T839, Samsung SGH-T839 Sidekick 4G | Sony Xperia mini ST15, Sony Ericsson Smultron |
| Country or region available |  USA |  (Global, International) |
| Brand | T-Mobile | Sony Ericsson |
| Release date | 4/20/2011 | 8/1/2011 |
| Depth | 15 millimeters (0.59 inches) | 16 millimeters (0.63 inches) |
| Size (width x height) | 61 x 127 millimeters (2.4 x 5 in) | 52 x 88 millimeters (2.05 x 3.46 in) |
| Weight | 162 grams (5.67 ounces) | 99 grams (3.47 ounces) |
| Build, materials | feature not registered | feature not registered |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| T-Mobile Sidekick 4G (SGH-T839) | Sony Ericsson Xperia mini (ST15i) | |
| Display type | TFT LCD | TFT LED-Backlit LCD |
| Screen size | 3.5" inches | 3" inches |
| Screen-to-body ratio | ~45% (screen-to-body ratio) | ~58.6% (screen-to-body ratio) |
| Display resolution | 480x800 pixels | 320x480 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 267 PPI | 192 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Not supported | Scratch-resistant glass |
| Refresh rate | feature not registered | feature not registered |
| Display features | feature not registered | feature not registered |
🤖 Operating System | ||
| T-Mobile Sidekick 4G (SGH-T839) | Sony Ericsson Xperia mini (ST15i) | |
| System version | Android 2.2.1 Froyo | Android 2.3.3 Gingerbread |
| Firmware update | feature not registered | Android 4.0.4 Ice Cream Sandwich ICS |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| T-Mobile Sidekick 4G (SGH-T839) | Sony Ericsson Xperia mini (ST15i) | |
| Chipset | 32bit: Samsung Exynos 3 | 32bit: Qualcomm Snapdragon S2 MSM8255 |
| CPU | Single-core, 1 processor: 1x 1GHz ARM Cortex-A8 (Single-core) | Single-core, 1 processor: 1x 1GHz Scorpion (Single-core) |
| GPU graphical controller | PowerVR SGX540 | Qualcomm Adreno 205 |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| T-Mobile Sidekick 4G (SGH-T839) | Sony Ericsson Xperia mini (ST15i) | |
| RAM memory | 512MB | 512MB LPDDR |
| Internal storage | 1GB (350MB available) | 1GB (320MB available) |
| External storage | Until 32GB microSD, microSDHC (dedicated slot) | Until 32GB microSD, microSDHC (dedicated slot) |
📶 Mobile networks | ||
| T-Mobile Sidekick 4G (SGH-T839) | Sony Ericsson Xperia mini (ST15i) | |
| Dual-SIM | Not supported | Not supported |
| SIM card | 1 slot (Single-SIM) Standard mini-SIM (2FF) | 1 slot (Single-SIM) Standard mini-SIM (2FF) |
| Maximum Download / Upload | 21/5.76 Mbps | 7.2/5.76 Mbps |
| Network technology | 2G, 3G | 2G, 3G |
| 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 | UMTS 900/2100 |
| Primary 4G network | Not supported | Not supported |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+ | GPRS, EDGE, UMTS, HSDPA, HSUPA |
| 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) | Sony Ericsson Xperia mini (ST15i) | |
| Back camera (main camera) | 3.1 megapixels | 5 megapixels |
| Main camera resolution | 2048x1536 pixels | 2592x1944 pixels |
| Video recording (primary) | VGA (720x480) 30 fps | HD (1280x720) |
| Flash | Not supported | LED flash |
| Focal aperture | feature not registered | feature not registered |
| Focal length | feature not registered | feature not registered |
| Sensor size | feature not registered | feature not registered |
| Pixel size | feature not registered | feature not registered |
| Autofocus | Autofocus | Autofocus |
| Touch focus | feature not registered | Supported |
| Image stabilization | feature not registered | feature not registered |
| 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 | Not supported |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| T-Mobile Sidekick 4G (SGH-T839) | Sony Ericsson Xperia mini (ST15i) | |
| Front camera (secondary) | 0.3 megapixels | Not supported |
| Front camera resolution | 640x480 pixels | Not supported |
| Video recording (secondary) | Not supported | Not supported |
| Front flash | Not supported | Not supported |
| Focal aperture | feature not registered | feature not registered |
| Focal length | feature not registered | feature not registered |
| Sensor size | feature not registered | feature not registered |
| Pixel size | feature not registered | feature not registered |
🔉 Sound and multimedia | ||
| T-Mobile Sidekick 4G (SGH-T839) | Sony Ericsson Xperia mini (ST15i) | |
| Loudspeaker | Supported | Supported |
| Active noise cancellation | feature not registered | Not supported |
| Radio | Not supported | FM (RDS) |
| TV | Not supported | Not supported |
| Video formats | MP4, H.264, H.263 | MP4, H.264, H.263, WMV |
| Audio formats | MP3, WAV, eAAC+ | MP3, WAV, WMA, eAAC+ |
🔌 Connectivity | ||
| T-Mobile Sidekick 4G (SGH-T839) | Sony Ericsson Xperia mini (ST15i) | |
| USB | MicroUSB 2.0 | MicroUSB 2.0 |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | Not supported | Not supported |
| Bluetooth | 3.0 + A2DP | 2.1 + A2DP |
| WiFi | 802.11 b/g/n [wifi4] (2.4GHz) | 802.11 b/g/n [wifi4] (2.4GHz) |
| DLNA | feature not registered | Supported |
| GPS | A-GPS, GeoTagging | A-GPS, GeoTagging |
| NFC | Not supported | Not supported |
| Infrared port | feature not registered | Not supported |
🧭 Sensors | ||
| T-Mobile Sidekick 4G (SGH-T839) | Sony Ericsson Xperia mini (ST15i) | |
| Sensors | Accelerometer Ambient light sensor Proximity sensor | Accelerometer Ambient light sensor Compass Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| T-Mobile Sidekick 4G (SGH-T839) | Sony Ericsson Xperia mini (ST15i) | |
| Battery type | Li-Ion: lithium-ion (Removable) | LiPo: li-ion polymer (Removable) EP500 |
| Battery capacity | 1500 mAh | 1200 mAh |
| Charger, watts | Wired charging | Wired charging |
| Inductive / wireless charging | feature not registered | feature not registered |
| Talk time autonomy | 6.5 hours | 4.5 hours |
| Standby | 456 hours (19 days) | 320 hours (13.3 days) |
➕ Other features | ||
| T-Mobile Sidekick 4G (SGH-T839) | Sony Ericsson Xperia mini (ST15i) | |
| Call control | Voice recorder | 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 | Not supported |
| Ringtones | Polyphonic and customized | Polyphonic and customized |
| Web browser | HTML, XHTML, Flash player | HTML, XHTML, Flash player |
| 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, Pink, Blue, White • 2GB microSD included • Sony Ericsson UX platform • Sony Ericsson Timescape • Sony Ericsson PlayNow • Wi-Fi hotspot Java framework |
☢️ Radiation rate | ||
| T-Mobile Sidekick 4G (SGH-T839) | Sony Ericsson Xperia mini (ST15i) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | feature not registered |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | 0.78W/kg (head) |