Compare specs

Network	Technology	GSM / HSPA	GSM / HSPA	GSM / HSPA
	2G bands	GSM 850 / 900 / 1800 / 1900	GSM 850 / 900 / 1800 / 1900	GSM 850 / 900 / 1800 / 1900
	3G bands	HSDPA 900 / 2100 - WT19i	HSDPA 900 / 2100	HSDPA 900 / 2100
		HSDPA 850 / 1900 / 2100 - WT19a	HSDPA 850 / 1900 / 2100	HSDPA 850 / 1900 / 2100
	Speed	HSPA 7.2/5.76 Mbps	HSPA 7.2/5.76 Mbps	HSPA 7.2/5.76 Mbps

Launch	Announced	2011, August. Released 2011, October	2011, May. Released 2011, August	2011, May. Released 2011, August
	Status	Discontinued	Discontinued	Discontinued

Body	Dimensions	106 x 56.5 x 14.2 mm (4.17 x 2.22 x 0.56 in)	88 x 52 x 16 mm (3.46 x 2.05 x 0.63 in)	92 x 53 x 18 mm (3.62 x 2.09 x 0.71 in)
	Weight	115 g (4.06 oz)	99 g (3.49 oz)	136 g (4.80 oz)
	Keyboard			QWERTY
	SIM	Mini-SIM	Mini-SIM	Mini-SIM

Display	Type	TFT	LED-backlit LCD,	LED-backlit LCD,
	Size	3.2 inches, 30.5 cm2 (~50.9% screen-to-body ratio)	3.0 inches, 26.8 cm2 (~58.6% screen-to-body ratio)	3.0 inches, 26.8 cm2 (~55.0% screen-to-body ratio)
	Resolution	320 x 480 pixels, 3:2 ratio (~180 ppi density)	320 x 480 pixels, 3:2 ratio (~192 ppi density)	320 x 480 pixels, 3:2 ratio (~192 ppi density)
	Protection	Scratch-resistant glass	Scratch-resistant glass	Scratch-resistant glass

Platform	OS	Android 2.3 (Gingerbread), upgradable to 4.0 (Ice Cream Sandwich)	Android 2.3 (Gingerbread), upgradable to 4.0 (Ice Cream Sandwich)	Android 2.3 (Gingerbread), 4.0 (Ice Cream Sandwich), not upgradable to 4.1 (Jelly Bean)
	Chipset	Qualcomm MSM8255 Snapdragon S2	Qualcomm MSM8255 Snapdragon S2	Qualcomm MSM8255 Snapdragon S2
	CPU	1.0 GHz Scorpion	1.0 GHz Scorpion	1.0 GHz Scorpion
	GPU	Adreno 205	Adreno 205	Adreno 205

Memory	Card slot	microSDHC (dedicated slot), 2 GB included	microSDHC (dedicated slot), 2 GB included	microSDHC (dedicated slot), 2 GB included
	Internal	320MB 512MB RAM	512MB RAM, 320MB	512MB RAM, 400MB

Main Camera	Modules	5 MP, AF	5 MP, AF	5 MP, AF
	Features	LED flash	LED flash	LED flash
	Video	720p	720p	720p

Selfie Camera	Modules	VGA	No	VGA
	Video

Sound	Loudspeaker	Yes, with stereo speakers	Yes	Yes
	3.5mm jack	Yes	Yes	Yes

Comms	WLAN	Wi-Fi 802.11 b/g/n, DLNA, hotspot	Wi-Fi 802.11 b/g/n, DLNA, hotspot	Wi-Fi 802.11 b/g/n, DLNA, hotspot
	Bluetooth	2.1, A2DP, EDR	2.1, A2DP	2.1, A2DP
	GPS	Yes, with A-GPS	Yes, with A-GPS	Yes, with A-GPS
	Infrared port	No	No	No
	Radio	Stereo FM radio, RDS	Stereo FM radio, RDS	Stereo FM radio, RDS
	USB	microUSB 2.0, USB On-The-Go	microUSB 2.0	microUSB 2.0

Features	Sensors	Accelerometer, proximity, compass	Accelerometer, proximity, compass	Accelerometer, proximity, compass
		ANT+ MP4/H.264/WMV player MP3/eAAC+/WMA/WAV player TrackID music recognition Document editor Voice memo Predictive text input	ANT+ MP4/H.264/WMV player MP3/eAAC+/WMA/WAV player TrackID music recognition Document viewer Voice memo Predictive text input	ANT+ MP4/H.264/WMV player MP3/eAAC+/WMA/WAV player TrackID music recognition Document viewer Voice memo Predictive text input

Battery	Type	Removable Li-Ion 1200 mAh battery	Removable Li-Ion 1200 mAh battery	Removable Li-Ion 1200 mAh battery
	Stand-by	Up to 350 h (2G) / Up to 400 h (3G)	Up to 340 h (2G) / Up to 320 h (3G)	Up to 331 h (2G) / Up to 340 h (3G)
	Talk time	Up to 14 h 15 min (2G) / Up to 6 h 42 min (3G)	Up to 4 h 30 min (2G) / Up to 4 h 30 min (3G)	Up to 5 h 40 min (2G) / Up to 5 h 25 min (3G)
	Music play	Up to 17 h 30 min	Up to 25 h	Up to 29 h

Misc
	Colors	Black, White	Black, White, Blue, Dark pink	Black, White, Pink, Turquoise
	SAR EU	1.00 W/kg (head)	0.78 W/kg (head)	0.46 W/kg (head)
	Models		ST15i
	Price	About 120 EUR	About 120 EUR	About 140 EUR

Tests	Display			Contrast ratio: 714:1 (nominal)
	Camera	Compare PHOTO / Compare VIDEO
	Loudspeaker	Voice 75dB / Noise 68dB / Ring 78dB	Voice 71dB / Noise 65dB / Ring 66dB	Voice 70dB / Noise 62dB / Ring 70dB
	Audio quality	Noise -88.1dB / Crosstalk -87.9dB	Noise -88.7dB / Crosstalk -90.6dB	Noise -89.7dB / Crosstalk -91.0dB