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Alcatel OT-991 (Single-sim) vs T-Mobile Sidekick 4G (SGH-T839)

Side by side comparison between Alcatel OT-991 vs T-Mobile Sidekick 4G phones, differences, pros, cons and full specifications. What's the better?

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Compare T-Mobile Sidekick 4G X Alcatel OT-991 (Single-sim) 08Points
Alcatel OT-991 (Single-sim)
Specifications Compare Models Pictures
4"
TFT

320x480

3.1
MP

0.3mp

256MB
RAM

Single-core

1500
mAh

(Removable)

vs
10Points T-Mobile Sidekick 4G (SGH-T839) Compare Alcatel OT-991 X
T-Mobile Sidekick 4G (SGH-T839)
Specifications Compare Models Pictures
3.5"
TFT

480x800

3.1
MP

0.3mp

512MB
RAM

Single-core

1500
mAh

(Removable)

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!

OT-991 (Single-sim)} 8 Advantages Alcatel OT-991 (Single-sim) vs Sidekick 4G (SGH-T839)} 10 Advantages T-Mobile Sidekick 4G (SGH-T839)
+131 grams (4.59 ounces)24%
Lighter		vs162 grams (5.67 ounces)
+10.8 millimeters (0.43 inches)39%
Thinner		vs15 millimeters (0.59 inches)
+4"14%
Larger screen		vs3.5"
+LED flashAdvantage
The LED flash helps in dark places or in low light		vsNot supported
+Android 2.3.6 GingerbreadAdvantage
Android 2.3.6 Gingerbread is newer and safer		vsAndroid 2.2.1 Froyo
+CompassAdvantage
Sensors help you use the device		vsNot supported
+FM (RDS)Advantage
The radio lets you listen to your songs and sports in general		vsNot supported
+4.0 + A2DPAdvantage
Bluetooth 4.0 + A2DP is newer and faster		vs3.0 + A2DP
800MHz 32bit Single-corevs+1GHz 32bit Single-core6%
More powerful processor, you can open your applications faster
256MBvs+512MB100%
More RAM memory. Typically more responsive and better for multitasking.
512MB (150MB available)vs+1GB (350MB available)133%
More internal storage for applications and files
260 thousandvs+16 million61 times
More colors on the screen is better quality images and videos
320x480 pixelsvs+480x800 pixels150%
Higher resolution screen
144 PPIvs+267 PPI85%
Crisper display of text, images and videos because it has more pixels per inch (ppi)
Not supportedvs+AutofocusAdvantage
Best autofocus type for taking pictures
3G HSDPAvs+3G+ HSPA+Advantage
The 3G+ HSPA+ network is newer and faster
(3G HSDPA) 7.2 Mbpsvs+(3G+ HSPA+) 21 Mbps192%
Faster for surfing the internet and download files
Not supportedvs+Ambient light sensorAdvantage
Sensors help you use the device
20 Common items in both devices
Until 32GB microSD, microSDHC
TFT LCD
(back) 3.1MP
Only digital zoom
(front) 0.3MP
VGA (720x480)
Capacitive
+13 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

Alcatel OT-991 (Single-sim)T-Mobile Sidekick 4G (SGH-T839)
 
ModelOT-991 (Single-sim)Sidekick 4G (SGH-T839)
Other model namesAlcatel One Touch 991, Alcatel 991T-Mobile Sidekick 4G T839, Samsung SGH-T839 Sidekick 4G
Country or region availablefeature not registeredUSA
USA
BrandAlcatelT-Mobile
Release date6/1/20124/20/2011
Depth10.8 millimeters (0.43 inches)15 millimeters (0.59 inches)
Size (width x height)68 x 122 millimeters (2.68 x 4.8 in)61 x 127 millimeters (2.4 x 5 in)
Weight131 grams (4.59 ounces)162 grams (5.67 ounces)
Build, materialsfeature not registeredfeature not registered
Protection against water and othersNot supportedNot supported

📲 Display

Alcatel OT-991 (Single-sim)T-Mobile Sidekick 4G (SGH-T839)
Display typeTFT LCDTFT LCD
Screen size4" inches3.5" inches
Screen-to-body ratio~57.4% (screen-to-body ratio)~45% (screen-to-body ratio)
Display resolution320x480 pixels480x800 pixels
TouchscreenCapacitive MultitouchCapacitive Multitouch
Pixel density (dot pitch)144 PPI267 PPI
Colors260 thousand16 million
Scratch-resistant glassNot supportedNot supported
Refresh ratefeature not registeredfeature not registered
Display featuresfeature not registeredfeature not registered

🤖 Operating System

Alcatel OT-991 (Single-sim)T-Mobile Sidekick 4G (SGH-T839)
System versionAndroid 2.3.6 GingerbreadAndroid 2.2.1 Froyo
Firmware updatefeature not registeredfeature not registered
User Interfacefeature not registeredfeature not registered

⚙️ Processor

Alcatel OT-991 (Single-sim)T-Mobile Sidekick 4G (SGH-T839)
Chipset32bit: MediaTek MT657332bit: Samsung Exynos 3
CPUSingle-core, 1 processor:
1x 800MHz ARM11 (Single-core)		Single-core, 1 processor:
1x 1GHz ARM Cortex-A8 (Single-core)
GPU graphical controllerPowerVR SGX531PowerVR SGX540
Performance (benchmark)feature not registeredfeature not registered

💽 Memory and storage

Alcatel OT-991 (Single-sim)T-Mobile Sidekick 4G (SGH-T839)
RAM memory256MB512MB
Internal storage512MB (150MB available)1GB (350MB available)
External storageUntil 32GB microSD, microSDHC
(dedicated slot)		Until 32GB microSD, microSDHC
(dedicated slot)

📶 Mobile networks

Alcatel OT-991 (Single-sim)T-Mobile Sidekick 4G (SGH-T839)
Dual-SIMNot supportedNot supported
SIM card1 slot (Single-SIM)
Standard mini-SIM (2FF)		1 slot (Single-SIM)
Standard mini-SIM (2FF)
Maximum Download / Upload7.2 Mbps21/5.76 Mbps
Network technology2G2G, 3G
Frequency, bands Expand band details Collapse details
GSM MHz bandQuad-Band 850/900/1800/1900Quad-Band 850/900/1800/1900
Primary 2G networkGSM 850/900/1800/1900GSM 850/900/1800/1900
Primary 3G networkNot supportedUMTS 1700/2100
Primary 4G networkNot supportedNot supported
Primary 5G networkNot supportedNot supported
Primary data networkGPRS, EDGE, UMTS, HSDPAGPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+
Secondary 2G networkNot supportedNot supported
Secondary 3G networkNot supportedNot supported
Secondary 4G networkNot supportedNot supported
Secondary data networkNot supportedNot supported

📷 Camera

Alcatel OT-991 (Single-sim)T-Mobile Sidekick 4G (SGH-T839)
Back camera (main camera)3.1 megapixels3.1 megapixels
Main camera resolution2048x1536 pixels2048x1536 pixels
Video recording (primary)VGA (720x480) 30 fpsVGA (720x480) 30 fps
FlashLED flashNot supported
Focal aperturefeature not registeredfeature not registered
Focal lengthfeature not registeredfeature not registered
Sensor sizefeature not registeredfeature not registered
Pixel sizefeature not registeredfeature not registered
AutofocusNot supportedAutofocus
Touch focusfeature not registeredfeature not registered
Image stabilizationfeature not registeredfeature not registered
ZoomOnly digital zoomOnly digital zoom
Face/smile detectionfeature not registeredfeature not registered
BSI sensorfeature not registeredfeature not registered
HDRfeature not registeredfeature not registered
Camera extrasfeature not registeredfeature not registered

📸 Front camera

Alcatel OT-991 (Single-sim)T-Mobile Sidekick 4G (SGH-T839)
Front camera (secondary)0.3 megapixels0.3 megapixels
Front camera resolution640x480 pixels640x480 pixels
Video recording (secondary)Not supportedNot supported
Front flashNot supportedNot supported
Focal aperturefeature not registeredfeature not registered
Focal lengthfeature not registeredfeature not registered
Sensor sizefeature not registeredfeature not registered
Pixel sizefeature not registeredfeature not registered

🔉 Sound and multimedia

Alcatel OT-991 (Single-sim)T-Mobile Sidekick 4G (SGH-T839)
LoudspeakerSupportedSupported
Active noise cancellationfeature not registeredfeature not registered
RadioFM (RDS)Not supported
TVNot supportedNot supported
Video formatsMP4, H.264MP4, H.264, H.263
Audio formatsMP3, WAV, WMA, AAC+MP3, WAV, eAAC+

🔌 Connectivity

Alcatel OT-991 (Single-sim)T-Mobile Sidekick 4G (SGH-T839)
USBMicroUSB 2.0MicroUSB 2.0
Audio output3.5mm jack3.5mm jack
TV outputNot supportedNot supported
Bluetooth4.0 + A2DP3.0 + A2DP
WiFi802.11 b/g/n [wifi4] (2.4GHz)802.11 b/g/n [wifi4] (2.4GHz)
DLNAfeature not registeredfeature not registered
GPSA-GPS, GeoTaggingA-GPS, GeoTagging
NFCNot supportedNot supported
Infrared portfeature not registeredfeature not registered

🧭 Sensors

Alcatel OT-991 (Single-sim)T-Mobile Sidekick 4G (SGH-T839)
SensorsAccelerometer
Compass
Proximity sensor		Accelerometer
Ambient light sensor
Proximity sensor
Vibrating alertSupportedSupported

🔋 Battery

Alcatel OT-991 (Single-sim)T-Mobile Sidekick 4G (SGH-T839)
Battery typeLi-Ion: lithium-ion (Removable)Li-Ion: lithium-ion (Removable)
Battery capacity1500 mAh1500 mAh
Charger, wattsWired chargingWired charging
Inductive / wireless chargingfeature not registeredfeature not registered
Talk time autonomy10 hours6.5 hours
Standby400 hours (16.7 days)456 hours (19 days)

➕ Other features

Alcatel OT-991 (Single-sim)T-Mobile Sidekick 4G (SGH-T839)
Call controlVoice recorderVoice recorder
MessagingSMS (T9), MMS, E-mail, Push mailSMS (T9), MMS, E-mail, Push mail
Hands-free callingSupportedSupported
Video callingSupportedSupported
RingtonesPolyphonic and customizedPolyphonic and customized
Web browserHTML, XHTML, Flash playerHTML, XHTML, Flash player
AntennaInternal antennaInternal antenna
Qwerty physical keyboardNot supportedRetractable QWERTY keyboard
Miscellaneous• Colors: Black, White
• HAC (M3/T3)
• WiFi hotspot
Java framework		• Colors: Matte black, Pearl magenta
• 2GB microSD included
• Samsung TouchWiz UI
• Optical trackpad
• HAC M3/T3
• T-Mobile TV
• DLNA
• WiFi hotspot
Java framework

☢️ Radiation rate

Alcatel OT-991 (Single-sim)T-Mobile Sidekick 4G (SGH-T839)
SAR 1.6W/kg (USA, Mexico, etc.)feature not registeredfeature not registered
SAR 2W/kg (Europe, UK, etc.)feature not registeredfeature not registered
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