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Samsung SGH-T139 vs AT&T Z221

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Samsung SGH-T139

User Rating - 6.3

Posted: 29 Jan 2010
Market Status: Released US carrier availability: T-Mobile - Available (since 04 Feb 2010)

AT&T Z221

User Rating - 8.5

Posted: 28 Sep 2011
Market Status: Released US carrier availability: AT&T - Discontinued

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Design
Device type	Basic phone	Basic phone
Form factor	Clamshell	Clamshell
Dimensions	3.74 x 1.89 x 0.72 inches (95 x 48 x 18 mm)	3.76 x 1.92 x 0.73 inches (96 x 49 x 19 mm)
Weight	2.98 oz (84 g) the average is 4.4 oz (127 g)	3.24 oz (92 g) the average is 4.4 oz (127 g)
Design features	Numeric keypad, Soft keys, D-Pad (2)	Numeric keypad, D-Pad
Side Keys	Left: Volume control; Right: Camera shutter

Display
Physical size		2.0 inches
Resolution	128 x 160 pixels	240 x 320 pixels
Pixel density Pixel density - The pixel density of a display represents the number of pixels over an area of one inch. It’s measured in “pixels per inch”, or ppi. The higher the number, the more detailed and good-looking the display is.		200 ppi
Technology Technology - There are two main screen technologies currently used in phones and tablets: LCD and AMOLED. The former usually features a light source and liquid crystals, while the latter is based on organic light-emitting diodes. Newer LCD variations like IPS-LCD and Super-LCD allow for very accurate color reproduction and very wide viewing angles, where no significant image quality loss is observed. Current AMOLED screens differ in such a way that they can exhibit much more saturated colors (sometimes too much) and incredibly high contrast levels, which is due to black color being completely black in AMOLED displays.	TFT	TFT
Colors	65 536	65 536
Additional display Additional display - Shows specs of the phone's additional display	Black & White
Resolution Resolution - Refers to the width and the length od the additional display	96 x 96 pixels
Physical Size	1.00 inches

Battery
Talk time	7.00 hours the average is 11 h (647 min)	3.00 hours the average is 11 h (647 min)
Stand-by time	12.5 days (300 hours) the average is 18 days (441 h)	8.3 days (200 hours) the average is 18 days (441 h)
Capacity	800 mAh	900 mAh
Type	Li - Ion	Li - Ion

Hardware
System memory System memory - System memory, or RAM memory is the type of memory that the device uses to temporarily store data from the OS or currently-running apps. The more RAM available to the device, the better the performance will be when multiple or heavier programs are running.		64 MB RAM / 128 MB ROM
Built-in storage	0.01 GB

Camera
Camera	0.3 megapixels VGA	0.3 megapixels VGA
Features	Digital zoom
Camcorder		Yes

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Multimedia
Music player
Supported formats		MP3, AAC
Video playback
Supported formats		MPEG4, H.263, H.264

Internet browsing
Browser	NF3.4 Lite
supports	XHTML, WAP 2.0, CSS

Technology
GSM	850, 1900 MHz	850, 900, 1800, 1900 MHz
UMTS		850, 1900 MHz
Data	GPRS	HSDPA 3.6 Mbit/s, UMTS, EDGE
Global Roaming		Yes

Phone features
Phonebook	300 entries, Caller groups, Multiple numbers per contact, Picture ID, Ring ID	500 entries
Organizer	Calendar, Alarm, To-Do, Calculator, Converter, World clock, Stopwatch	Calendar, Alarm
Messaging	SMS, MMS (T9), Predictive text input	SMS, MMS, Predictive text input
E-mail		Yes
Instant Messaging	AOL, Windows Live / MSN, Yahoo!	Yes
JAVA JAVA - J2ME (Java 2 Platform, Micro Edition) is a technology that allows programmers to use the Java programming language and related tools to develop programs for mobile wireless information devices such as cellular phones and personal digital assistants (PDAs). J2ME consists of programming specifications and a special virtual machine, the K Virtual Machine, that allows a J2ME-encoded program to run in the mobile device.	Yes
Games	5th Grader, Tetris, Midnight Pool 2, Family Guy	Yes

Connectivity
Bluetooth	2.0, EDR	2.0
Profiles	Generic Access (GAP), Handsfree (HFP), Headset (HSP), Logical Link Control and Adaptation Protocol, Serial Port (SPP), Service Discovery Protocol (SDP)
USB		Yes
Connector		microUSB
Other	Computer sync, OTA sync, SyncML

Other features
Notifications	Polyphonic ringtones (40 voices), Vibration, Speakerphone	Polyphonic ringtones, Vibration, Silent mode, Speakerphone
Hearing aid compatibility	M4, T4	M3, T3
Other	Voice recording	Voice recording, TTY/TDD

Regulatory Approval
FCC approval FCC approval - The Federal Communications Commission (FCC) is an independent United States government agency, directly responsible to Congress. The FCC was established by the Communications Act of 1934 and is charged with regulating interstate and international communications by radio, television, wire, satellite and cable. The FCC's jurisdiction covers the 50 states, the District of Columbia, and U.S. possessions. Every wireless phone device that that is sold in the U.S. has to be tested and approved for sale by the FCC.
Date approved Date approved - Shows the date when the particular phone is approved by the Federal Communications Commission	29 Dec 2009
	FCC ID value: A3LSGHT139 link
FCC measured SAR FCC measured SAR - The exposure standard for mobile devices employs a unit of measurement known as the Specific Absorption Rate, or SAR. The SAR limit stated in the international guidelines is 2.0 W/ kg*. Tests for SAR are conducted using standard operating positions with the device transmitting at its highest certified power level in all tested frequency bands. Although the SAR is determined at the highest certified power level, the actual SAR of the device while operating can be well below the maximum value.
Head	0.43 W/kg
Measured in	1900 MHz
Body	0.80 W/kg
Measured in	1900 MHz

Samsung Galaxy Ring
- Posted: 19 Jun 2013
- OS: Android 4.1
- Hardware: Quad core, 1400 MHz, 1024 MB RAM
- Camera 5 megapixels, 1280x720 (720p HD) video
- Technology: CDMA (800 1900)
- Data: EV-DO
HTC Desire 200
- Announced: 5 hours ago
- OS: Android 4.0
- Hardware: Single core, 1000 MHz, 512 MB RAM
- Display: 3.5 inches, 320 x 480 pixels, Capacitive Touchscreen
- Camera 5 megapixels, 640x480 (VGA) video
- Battery: 10.9 hours of Talk Time, 693 hours of Stand-by
- Technology: GSM (850 900 1800 1900)
- Data: HSDPA 7.2 Mbit/s UMTS EDGE GPRS
Huawei Ascend P6
- Posted: 17 Jun 2013
- OS: Android 4.2.2
- Hardware: Quad core, 1500 MHz, 2048 MB RAM
- Display: 4.7 inches, 720 x 1280 pixels, Capacitive Touchscreen
- Camera 8 megapixels, 1920x1080 (1080p HD) video
- Technology: GSM (850 900 1800 1900)
- Data: UMTS EDGE GPRS
Samsung Galaxy S4 Zoom
- Announced: 12 Jun 2013
- OS: Android 4.2
- Hardware: Dual core, 1500 MHz, ARM Cortex-A9, 1536 MB RAM
- Display: 4.3 inches, 540 x 960 pixels, Capacitive Touchscreen
- Camera 16 megapixels, 1920x1080 (1080p HD) 1280x720 (720p HD) video
- Technology: GSM (850 900 1800 1900)
- Data: LTE Cat3 Downlink 100 Mbit/s LTE Cat3/4 Uplink 50 Mbit/s HSDPA+ (4G) 21.1 Mbit/s UMTS EDGE GPRS
Samsung GALAXY Ace 3
- Announced: 10 Jun 2013
- OS: Android 4.2.2
- Hardware: Dual core, 1200 MHz, 1024 MB RAM
- Display: 4.0 inches, 480 x 800 pixels, Capacitive Touchscreen
- Camera 5 megapixels, 1280x720 (720p HD) video
- Data: LTE Cat4 Downlink 150 Mbit/s LTE Cat3/4 Uplink 50 Mbit/s HSDPA+ (4G) 42.2 Mbit/s
ZTE Vital
- Announced: 10 Jun 2013
- OS: Android 4.1.2
- Hardware: Dual core, 1500 MHz, Krait, 1024 MB RAM
- Display: 5.0 inches, 720 x 1280 pixels
- Camera 13 megapixels
- Technology: CDMA (800 1900)
- Data: LTE
Nokia EOS
- Posted: 05 Jun 2013
- OS: Windows Phone 8
- Display: 4.5 inches, 768 x 1280 pixels, Capacitive Touchscreen
- Camera 41 megapixels
LG Optimus L4 II
- Posted: 05 Jun 2013
- OS: Android 4.1
- Hardware: Single core, 1000 MHz, ARM Cortex-A9, 512 MB RAM
- Display: 3.8 inches, 320 x 480 pixels, Capacitive Touchscreen
- Camera 3 megapixels
- Technology: GSM (850 900 1800 1900)
- Data: HSDPA 7.2 Mbit/s HSUPA 5.76 Mbit/s EDGE GPRS