Samsung Galaxy Ace Duos (SCH-i589) vs Alcatel OT-991 (Single-sim)

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Side by side comparison between Samsung Galaxy Ace Duos vs Alcatel OT-991 phones, differences, pros, cons and full specifications. What's the better?

6/15/2013 11:39 PM, updated: 4/29/2020 10:35 PM

Compare Alcatel OT-991 X Samsung Galaxy Ace Duos (SCH-i589) 06Points

Specifications Compare Models Pictures

3.5"
TFT

320x480

3.1
MP

256MB
RAM

Single-core

1650
mAh

(Removable)

09Points Alcatel OT-991 (Single-sim) Compare Samsung Galaxy Ace Duos X

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-991 (Single-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!

6 Advantages Samsung Galaxy Ace Duos (SCH-i589)	vs	9 Advantages Alcatel OT-991 (Single-sim)
+125 grams (4.38 ounces)5% Lighter	vs	131 grams (4.59 ounces)
+16 million61 times More colors on the screen is better quality images and videos	vs	260 thousand
+165 PPI15% Crisper display of text, images and videos because it has more pixels per inch (ppi)	vs	144 PPI
+AutofocusAdvantage Best autofocus type for taking pictures	vs	Not supported
+1650 mAh10% Battery - higher amperage (mAh) allows more device usage time, but it also depends on the hardware and use	vs	1500 mAh
+2 slots (Dual-SIM) (dedicated slot)Advantage You can have more mobile carriers/operators on the same device.	vs	1 slot (Single-SIM) (dedicated slot)
12.5 millimeters (0.49 inches)	vs	+10.8 millimeters (0.43 inches)16% Thinner
3.5"	vs	+4"14% Larger screen
Not supported	vs	+LED flashAdvantage The LED flash helps in dark places or in low light
Not supported	vs	+(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
3G CDMA2000 EV-DO Rev A	vs	+3G HSDPAAdvantage The 3G HSDPA network is newer and faster
(3G CDMA2000 EV-DO Rev A) 3.1 Mbps	vs	+(3G HSDPA) 7.2 Mbps132% Faster for surfing the internet and download files
Not supported	vs	+Video callingAdvantage The video calling allows to make calls with voice and video
3.0 + A2DP	vs	+4.0 + A2DPAdvantage Bluetooth 4.0 + A2DP is newer and faster

23 Common items in both devices

800MHz 32bit Single-core

256MB

512MB (158MB available) / 512MB (150MB available)

Until 32GB microSD, microSDHC

TFT LCD

320x480 pixels

(back) 3.1MP

+16 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

📱 Model features
	Galaxy Ace Duos (SCH-i589)	Alcatel OT-991 (Single-sim)
Change model		Choose the model
Model	Galaxy Ace Duos (SCH-i589)	OT-991 (Single-sim)
Other model names	Samsung Galaxy Ace Duos i589 CDMA	Alcatel One Touch 991, Alcatel 991
Country or region available	(Global, International), China, India	feature not registered
Brand	Samsung	Alcatel
Release date	2/1/2012	6/1/2012
Depth	12.5 millimeters (0.49 inches)	10.8 millimeters (0.43 inches)
Size (width x height)	59.9 x 112.4 millimeters (2.36 x 4.43 in)	68 x 122 millimeters (2.68 x 4.8 in)
Weight	125 grams (4.38 ounces)	131 grams (4.59 ounces)
Build, materials	feature not registered	feature not registered
Protection against water and others	Not supported	Not supported
📲 Display
	Galaxy Ace Duos (SCH-i589)	Alcatel OT-991 (Single-sim)
Display type	TFT LCD	TFT LCD
Screen size	3.5" inches	4" inches
Screen-to-body ratio	~54.2% (screen-to-body ratio)	~57.4% (screen-to-body ratio)
Display resolution	320x480 pixels	320x480 pixels
Touchscreen	Capacitive Multitouch	Capacitive Multitouch
Pixel density (dot pitch)	165 PPI	144 PPI
Colors	16 million	260 thousand
Scratch-resistant glass	Not supported	Not supported
Refresh rate	feature not registered	feature not registered
Display features	feature not registered	feature not registered
🤖 Operating System
	Galaxy Ace Duos (SCH-i589)	Alcatel OT-991 (Single-sim)
System version	Android 2.2.1 Froyo	Android 2.3.6 Gingerbread
Firmware update	Android 2.3.6 Gingerbread	feature not registered
User Interface	feature not registered	feature not registered
⚙️ Processor
	Galaxy Ace Duos (SCH-i589)	Alcatel OT-991 (Single-sim)
Chipset	32bit: Qualcomm MSM7627T	32bit: MediaTek MT6573
CPU	Single-core, 1 processor: 1x 800MHz ARM1136EJ-S (Single-core)	Single-core, 1 processor: 1x 800MHz ARM11 (Single-core)
GPU graphical controller	feature not registered	PowerVR SGX531
Performance (benchmark)	feature not registered	feature not registered
💽 Memory and storage
	Galaxy Ace Duos (SCH-i589)	Alcatel OT-991 (Single-sim)
RAM memory	256MB	256MB
Internal storage	512MB (158MB available)	512MB (150MB available)
External storage	Until 32GB microSD, microSDHC (dedicated slot)	Until 32GB microSD, microSDHC (dedicated slot)
📶 Mobile networks
	Galaxy Ace Duos (SCH-i589)	Alcatel OT-991 (Single-sim)
Dual-SIM	Dual-SIM Standby - Call active on one sim card (dedicated slot)	Not supported
SIM card	2 slots (Dual-SIM) Standard mini-SIM (2FF)	1 slot (Single-SIM) Standard mini-SIM (2FF)
Maximum Download / Upload	3.1 Mbps	7.2 Mbps
Network technology	2G, 3G	2G
Frequency, bands	Expand band details Collapse details
GSM MHz band	Dual-Band 900/1800	Quad-Band 850/900/1800/1900
Primary 2G network	CDMA 800/1900	GSM 850/900/1800/1900
Primary 3G network	CDMA2000 1xEV-DO	Not supported
Primary 4G network	Not supported	Not supported
Primary 5G network	Not supported	Not supported
Primary data network	CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A	GPRS, EDGE, UMTS, HSDPA
Secondary 2G network	GSM 900/1800	Not supported
Secondary 3G network	Not supported	Not supported
Secondary 4G network	Not supported	Not supported
Secondary data network	GPRS	Not supported
📷 Camera
	Galaxy Ace Duos (SCH-i589)	Alcatel OT-991 (Single-sim)
Back camera (main camera)	3.1 megapixels	3.1 megapixels
Main camera resolution	2048x1536 pixels	2048x1536 pixels
Video recording (primary)	QVGA (320x240)	VGA (720x480) 30 fps
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	Not supported
Touch focus	Not supported	feature not registered
Image stabilization	Not supported	feature not registered
Zoom	Only digital zoom	Only digital zoom
Face/smile detection	Face detection, Smile detection	feature not registered
BSI sensor	Not supported	feature not registered
HDR	Not supported	feature not registered
Camera extras	feature not registered	feature not registered
📸 Front camera
	Galaxy Ace Duos (SCH-i589)	Alcatel OT-991 (Single-sim)
Front camera (secondary)	Not supported	0.3 megapixels
Front camera resolution	Not supported	640x480 pixels
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
	Galaxy Ace Duos (SCH-i589)	Alcatel OT-991 (Single-sim)
Loudspeaker	Supported	Supported
Active noise cancellation	Not supported	feature not registered
Radio	FM (RDS)	FM (RDS)
TV	Not supported	Not supported
Video formats	MP4, H.264, H.263	MP4, H.264
Audio formats	MP3, WAV, eAAC+	MP3, WAV, WMA, AAC+
🔌 Connectivity
	Galaxy Ace Duos (SCH-i589)	Alcatel OT-991 (Single-sim)
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	4.0 + A2DP
WiFi	802.11 b/g/n [wifi4] (2.4GHz)	802.11 b/g/n [wifi4] (2.4GHz)
DLNA	Not supported	feature not registered
GPS	A-GPS, GeoTagging	A-GPS, GeoTagging
NFC	Not supported	Not supported
Infrared port	Not supported	feature not registered
🧭 Sensors
	Galaxy Ace Duos (SCH-i589)	Alcatel OT-991 (Single-sim)
Sensors	Accelerometer Compass Proximity sensor	Accelerometer Compass Proximity sensor
Vibrating alert	Supported	Supported
🔋 Battery
	Galaxy Ace Duos (SCH-i589)	Alcatel OT-991 (Single-sim)
Battery type	Li-Ion: lithium-ion (Removable)	Li-Ion: lithium-ion (Removable)
Battery capacity	1650 mAh	1500 mAh
Charger, watts	Wired charging	Wired charging
Inductive / wireless charging	feature not registered	feature not registered
Talk time autonomy	7 hours	10 hours
Standby	300 hours (12.5 days)	400 hours (16.7 days)
➕ Other features
	Galaxy Ace Duos (SCH-i589)	Alcatel OT-991 (Single-sim)
Call control	Voice dialing, Voice recorder	Voice recorder
Messaging	SMS (Swype), MMS, E-mail, Push mail	SMS (T9), MMS, E-mail, Push mail
Hands-free calling	Supported	Supported
Video calling	Not supported	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	Not supported	Not supported
Miscellaneous	• Colors: Black • 2GB microSD included • Samsung TouchWiz UI • Smile Shot/Panorama • WiFi hotspot Java framework	• Colors: Black, White • HAC (M3/T3) • WiFi hotspot Java framework
☢️ Radiation rate
	Galaxy Ace Duos (SCH-i589)	Alcatel OT-991 (Single-sim)
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