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Network	Technology	GSM / HSPA / LTE	GSM / HSPA / LTE	GSM / HSPA / LTE
	2G bands	GSM 850 / 900 / 1800 / 1900 - RM-821, RM-820	GSM 850 / 900 / 1800 / 1900 - all versions	GSM 850 / 900 / 1800 / 1900
	3G Network	HSDPA 850 / 900 / 1900 / 2100 - RM-821, RM-820	HSDPA 850 / 900 / 1900 / 2100 - RM-892	HSDPA 850 / 900 / 1900 / 2100
			HSDPA 850 / 900 / 1700 / 1900 / 2100 - RM-910, RM-893
	4G Network	LTE band 1(2100), 3(1800), 7(2600), 8(900), 20(800) - RM-821	LTE band 1(2100), 3(1800), 7(2600), 8(900), 20(800) - RM-892	LTE band 1(2100), 3(1800), 7(2600), 8(900), 20(800)
		LTE band 4(1700/2100), 17(700) - RM-820 (AT&T)	LTE band 2(1900), 4(1700/2100), 5(850), 17(700) - RM-893
	Speed	HSPA 42.2/5.76 Mbps, LTE Cat3 100/50 Mbps	HSPA 42.2/5.76 Mbps, LTE Cat3 100/50 Mbps	HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps

Launch	Announced	2012, September	2013, May	2014, April
	Status	Available. Released 2012, November	Available. Released 2013, June	Available. Released 2014, July

Body	Dimensions	130.3 x 70.8 x 10.7 mm, 99 cc (5.13 x 2.79 x 0.42 in)	129 x 70.6 x 8.5 mm, 78 cc (5.08 x 2.78 x 0.33 in)	137 x 71 x 9.8 mm, 94.7 cc (5.39 x 2.80 x 0.39 in)
	Weight	185 g (6.53 oz)	139 g (4.90 oz)	167 g (5.89 oz)
	SIM	Micro-SIM	Micro-SIM	Nano-SIM

Display	Type	IPS LCD capacitive touchscreen, 16M colors	AMOLED capacitive touchscreen, 16M colors	AMOLED capacitive touchscreen, 16M colors
	Size	4.5 inches, 57.6 cm2 (~62.5% screen-to-body ratio)	4.5 inches, 57.6 cm2 (~63.3% screen-to-body ratio)	5.0 inches, 68.9 cm2 (~70.9% screen-to-body ratio)
	Resolution	768 x 1280 pixels, 5:3 ratio (~332 ppi density)	768 x 1280 pixels, 5:3 ratio (~332 ppi density)	1080 x 1920 pixels, 16:9 ratio (~441 ppi density)
	Protection	Corning Gorilla Glass 2	Corning Gorilla Glass 2	Corning Gorilla Glass 3
		PureMotion HD+ ClearBlack display	PureMotion HD+ ClearBlack display	ClearBlack display

Platform	OS	Microsoft Windows Phone 8, upgradable to 8.1	Microsoft Windows Phone 8, upgradable to 8.1	Microsoft Windows Phone 8.1, upgradable to Windows 10
	Chipset	Qualcomm MSM8960 Snapdragon S4 Plus	Qualcomm MSM8960 Snapdragon S4 Plus	Qualcomm MSM8974 Snapdragon 800 (28 nm)
	CPU	Dual-core 1.5 GHz Krait	Dual-core 1.5 GHz Krait	Quad-core 2.2 GHz Krait 400
	GPU	Adreno 225	Adreno 225	Adreno 330

Memory	Card slot	No	No	No
	Internal	32GB 1GB RAM	16GB 1GB RAM, 32GB 1GB RAM	32GB 2GB RAM

Main Camera	Modules	8 MP, f/2.0, 26mm (wide), 1/3", AF, OIS	8 MP, 1/3", AF, OIS	20 MP, f/2.4, 26mm (wide), 1/2.5", AF, OIS
	Features	Carl Zeiss optics, dual-LED flash	Carl Zeiss optics, dual-LED flash	Zeiss optics, dual-LED flash, panorama, HDR
	Video	1080p@30fps	1080p@30fps	2160p@30fps (after WP8 Denim update), 1080p@30fps, stereo sound rec.

Selfie Camera	Modules	1.3 MP	1.3 MP	1.2 MP
	Video	720p@30fps	720p@30fps	720p@30fps

Sound	Loudspeaker	Yes	Yes	Yes
	3.5mm jack	Yes	Yes	Yes
		Dolby Headphone Active noise cancellation with dedicated mic	Dolby Headphone Active noise cancellation with dedicated mic	Dolby Digital Plus sound Active noise cancellation with dedicated mic

Comms	WLAN	Wi-Fi 802.11 a/b/g/n, dual-band, DLNA, hotspot	Wi-Fi 802.11 a/b/g/n, dual-band, DLNA, hotspot	Wi-Fi 802.11 a/b/g/n/ac, dual-band, DLNA, hotspot
	Bluetooth	4.0, A2DP, EDR, LE/ aptX after WP8 Denim update	4.0, A2DP, EDR, LE/ aptX after WP8 Denim update	4.0, A2DP, EDR, LE/ aptX after WP8 Denim update
	GPS	Yes, with A-GPS, GLONASS	Yes, with A-GPS, GLONASS	Yes, with A-GPS, GLONASS
	NFC	Yes	Yes	Yes
	Infrared port	No	No	No
	Radio	FM radio	FM radio	FM radio
	USB	microUSB 2.0	microUSB 2.0	microUSB 2.0

Features	Sensors	Accelerometer, gyro, proximity, compass	Accelerometer, gyro, proximity, compass	Accelerometer, gyro, proximity, compass, sensor core

Battery		Non-removable Li-Ion 2000 mAh battery (BP-4GW)	Non-removable Li-Ion 2000 mAh battery (BL-4YW)	Non-removable Li-Ion 2420 mAh battery (BV-5QW)
	Charging	Qi wireless charging		Qi wireless charging (market dependent)
	Stand-by	Up to 400 h (2G) / Up to 400 h (3G)	Up to 440 h (3G)	Up to 432 h
	Talk time	Up to 17 h (2G) / Up to 10 h (3G)	Up to 18 h 20 min (2G) / Up to 12 h 40 min (3G)	Up to 11 h 30 min (2G) / Up to 15 h 30 min (3G)
	Music play	Up to 67 h	Up to 55 h	Up to 75 h

Misc
	Colors	Black, Gray, Red, Yellow, White	Black, White, Gray	Bright orange, bright green, white, black, gold
	SAR	1.08 W/kg (head)     0.91 W/kg (body)	1.42 W/kg (head)     1.00 W/kg (body)	0.90 W/kg (head)     0.56 W/kg (body)
	SAR EU	0.70 W/kg (head)	0.81 W/kg (head)	0.60 W/kg (head)     0.73 W/kg (body)
	Price	About 210 EUR	About 260 EUR	About 370 EUR

Tests	Performance			Basemark OS II: 1067
	Display	Contrast ratio: 1065:1 (nominal) / 2.107:1 (sunlight)	Contrast ratio: Infinite (nominal) / 3.402:1 (sunlight)	Contrast ratio: Infinite (nominal), 3.567 (sunlight)
	Camera	Compare PHOTO / Compare VIDEO
	Loudspeaker	Voice 61dB, noise 64dB, ring 65dB	Voice 63dB, noise 72dB, ring 66dB	Voice 76dB, noise 69dB, ring 77dB
	Audio quality	Noise -78.9dB / Crosstalk -75.0dB	Noise -82.5dB / Crosstalk -81.2dB	Noise -91.4dB / Crosstalk -90.3dB
	Battery life	44h endurance rating		46h endurance rating