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BlackBerry Curve 8520 vs Alcatel OT-991D (Dual-sim)

Side by side comparison between BlackBerry Curve 8520 vs Alcatel OT-991 phones, differences, pros, cons and full specifications. What's the better?

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Compare Alcatel OT-991 X BlackBerry Curve 8520 03Points
BlackBerry Curve 8520
Specifications Compare Models Pictures
2.46"
TFT

320x240

2
MP
128MB
RAM

Single-core

1150
mAh

(Removable)

vs
22Points Alcatel OT-991D (Dual-sim) Compare BlackBerry Curve 8520 X
Alcatel OT-991D (Dual-sim)
Specifications Compare Models Pictures
4"
TFT

320x480

3.1
MP

0.3mp

256MB
RAM

Single-core

1500
mAh

(Removable)

What's the better phone? Alcatel OT-991D (Dual-sim)

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!

Curve 8520} 3 Advantages BlackBerry Curve 8520 vs OT-991D (Dual-sim)} 22 Advantages Alcatel OT-991D (Dual-sim)
+256MB71%
More internal storage for applications and files		vs512MB (150MB available)
+106 grams (3.71 ounces)24%
Lighter		vs131 grams (4.59 ounces)
+163 PPI13%
Crisper display of text, images and videos because it has more pixels per inch (ppi)		vs144 PPI
512MHz 32bit Single-corevs+800MHz 32bit Single-core56%
More powerful processor, you can open your applications faster
128MB SDRAMvs+256MB100%
More RAM memory. Typically more responsive and better for multitasking.
13.9 millimeters (0.55 inches)vs+10.8 millimeters (0.43 inches)29%
Thinner
65 thousandvs+260 thousand3 times
More colors on the screen is better quality images and videos
320x240 pixelsvs+320x480 pixels100%
Higher resolution screen
2.46"vs+4"63%
Larger screen
(back) 2MPvs+(back) 3.1MP64%
Higher resolution main camera
Not supportedvs+LED flashAdvantage
The LED flash helps in dark places or in low light
Not supportedvs+(front) 0.3MPAdvantage
A front-camera is best for taking selfies
QVGA (320x240)vs+VGA (720x480)4 times
More image quality for recording videos with the primary camera
70000 apps (BlackBerry App World)vs+3500000 apps (Google Play Store)49 times
More apps available to download and use
2G EDGEvs+3G HSDPAAdvantage
The 3G HSDPA network is newer and faster
(2G EDGE) 0.236 Mbpsvs+(3G HSDPA) 7.2 Mbps30 times
Faster for surfing the internet and download files
Not supportedvs+Capacitive MultitouchAdvantage
The touch screen facilitates the use of the device
Not supportedvs+Accelerometer, Proximity sensor, CompassAdvantage
Sensors help you use the device
1150 mAhvs+1500 mAh30%
Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use
Not supportedvs+Video callingAdvantage
The video calling allows to make calls with voice and video
1 slot (Single-SIM)
(dedicated slot)		vs+2 slots (Dual-SIM)
(dedicated slot)Advantage
You can have more mobile carriers/operators on the same device.
Not supportedvs+FM (RDS)Advantage
The radio lets you listen to your songs and sports in general
Not supportedvs+A-GPS, GeoTaggingAdvantage
It's harder to lose yourself in the city with GPS on your device
802.11 b/g [wifi3]vs+802.11 b/g/n [wifi4]Advantage
WiFi 802.11 b/g/n [wifi4] is newer and faster
2.0 + A2DPvs+4.0 + A2DPAdvantage
Bluetooth 4.0 + A2DP is newer and faster
9 Common items in both devices
Until 32GB microSD, microSDHC
TFT LCD
Only digital zoom
Li-Ion: lithium-ion (Removable)
Hands-free calling
Vibrating alert
3.5mm jack
+2 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

BlackBerry Curve 8520Alcatel OT-991D (Dual-sim)
Change model 
ModelCurve 8520OT-991D (Dual-sim)
Other model namesRIM BlackBerry Curve 8520, RIM GeminiAlcatel One Touch 991D Dual-sim, Alcatel 991
Country or region availablefeature not registeredfeature not registered
BrandBlackBerryAlcatel
Release date8/3/20099/1/2012
Depth13.9 millimeters (0.55 inches)10.8 millimeters (0.43 inches)
Size (width x height)60 x 109 millimeters (2.36 x 4.29 in)68 x 122 millimeters (2.68 x 4.8 in)
Weight106 grams (3.71 ounces)131 grams (4.59 ounces)
Build, materialsfeature not registeredfeature not registered
Protection against water and othersNot supportedNot supported

📲 Display

BlackBerry Curve 8520Alcatel OT-991D (Dual-sim)
Display typeTFT LCDTFT LCD
Screen size2.46" inches4" inches
Screen-to-body ratio~28.7% (screen-to-body ratio)~57.4% (screen-to-body ratio)
Display resolution320x240 pixels320x480 pixels
TouchscreenNot supportedCapacitive Multitouch
Pixel density (dot pitch)163 PPI144 PPI
Colors65 thousand260 thousand
Scratch-resistant glassNot supportedNot supported
Refresh ratefeature not registeredfeature not registered
Display featuresfeature not registeredfeature not registered

🤖 Operating System

BlackBerry Curve 8520Alcatel OT-991D (Dual-sim)
System versionBlackBerry OS 4.6Android 2.3.6 Gingerbread
Firmware updateBlackBerry OS 5.0feature not registered
User Interfacefeature not registeredfeature not registered

⚙️ Processor

BlackBerry Curve 8520Alcatel OT-991D (Dual-sim)
Chipset32bit: Freescale MXC275-3032bit: MediaTek MT6573
CPUSingle-core, 1 processor:
1x 512MHz ARM1136JF-S (Single-core)		Single-core, 1 processor:
1x 800MHz ARM11 (Single-core)
GPU graphical controllerfeature not registeredPowerVR SGX531
Performance (benchmark)feature not registeredfeature not registered

💽 Memory and storage

BlackBerry Curve 8520Alcatel OT-991D (Dual-sim)
RAM memory128MB SDRAM256MB
Internal storage256MB512MB (150MB available)
External storageUntil 32GB microSD, microSDHC
(dedicated slot)		Until 32GB microSD, microSDHC
(dedicated slot)

📶 Mobile networks

BlackBerry Curve 8520Alcatel OT-991D (Dual-sim)
Dual-SIMNot supportedDual-SIM Standby - Call active on one sim card
(dedicated slot)
SIM card1 slot (Single-SIM)
Standard mini-SIM (2FF)		2 slots (Dual-SIM)
Standard mini-SIM (2FF)
Maximum Download / Upload0.236 Mbps7.2 Mbps
Network technology2G2G
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 supportedNot supported
Primary 4G networkNot supportedNot supported
Primary 5G networkNot supportedNot supported
Primary data networkCSD, GPRS, EDGEGPRS, EDGE, UMTS, HSDPA
Secondary 2G networkNot supportedGSM 850/900/1800/1900
Secondary 3G networkNot supportedNot supported
Secondary 4G networkNot supportedNot supported
Secondary data networkNot supportedGPRS, EDGE

📷 Camera

BlackBerry Curve 8520Alcatel OT-991D (Dual-sim)
Back camera (main camera)2 megapixels3.1 megapixels
Main camera resolution1600x1200 pixels2048x1536 pixels
Video recording (primary)QVGA (320x240)VGA (720x480) 30 fps
FlashNot supportedLED flash
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 supportedNot supported
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

BlackBerry Curve 8520Alcatel OT-991D (Dual-sim)
Front camera (secondary)Not supported0.3 megapixels
Front camera resolutionNot supported640x480 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

BlackBerry Curve 8520Alcatel OT-991D (Dual-sim)
LoudspeakerSupportedSupported
Active noise cancellationfeature not registeredfeature not registered
RadioNot supportedFM (RDS)
TVNot supportedNot supported
Video formatsMP4, H.264, H.263, WMVMP4, H.264
Audio formatsMP3, WAV, WMA, eAAC+MP3, WAV, WMA, AAC+

🔌 Connectivity

BlackBerry Curve 8520Alcatel OT-991D (Dual-sim)
USBMicroUSB 2.0MicroUSB 2.0
Audio output3.5mm jack3.5mm jack
TV outputNot supportedNot supported
Bluetooth2.0 + A2DP4.0 + A2DP
WiFi802.11 b/g [wifi3] (2.4GHz)802.11 b/g/n [wifi4] (2.4GHz)
DLNAfeature not registeredfeature not registered
GPSNot supportedA-GPS, GeoTagging
NFCNot supportedNot supported
Infrared portfeature not registeredfeature not registered

🧭 Sensors

BlackBerry Curve 8520Alcatel OT-991D (Dual-sim)
SensorsNot supportedAccelerometer
Compass
Proximity sensor
Vibrating alertSupportedSupported

🔋 Battery

BlackBerry Curve 8520Alcatel OT-991D (Dual-sim)
Battery typeLi-Ion: lithium-ion (Removable)Li-Ion: lithium-ion (Removable)
Battery capacity1150 mAh1500 mAh
Charger, wattsWired chargingWired charging
Inductive / wireless chargingfeature not registeredfeature not registered
Talk time autonomy4.5 hours10 hours
Standby408 hours (17 days)366.7 hours (15.3 days)

➕ Other features

BlackBerry Curve 8520Alcatel OT-991D (Dual-sim)
Call controlVoice dialing, Voice recorderVoice recorder
MessagingSMS (T9), MMS, E-mailSMS (T9), MMS, E-mail, Push mail
Hands-free callingSupportedSupported
Video callingNot supportedSupported
RingtonesPolyphonic and customizedPolyphonic and customized
Web browserWAP, HTMLHTML, XHTML, Flash player
AntennaInternal antennaInternal antenna
Qwerty physical keyboardFixed QWERTY keyboardNot supported
Miscellaneous• Colors: Black
• 1GB microSD included
• Touch-sensitive optical trackpad
• UMA
• GMA
• Java framework		• Colors: Black, White
• HAC (M3/T3)
• WiFi hotspot
• Java framework

☢️ Radiation rate

BlackBerry Curve 8520Alcatel OT-991D (Dual-sim)
SAR 1.6W/kg (USA, Mexico, etc.)feature not registeredfeature not registered
SAR 2W/kg (Europe, UK, etc.)feature not registeredfeature not registered
X

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