B15 Q vs S50

Quick verdict

Which is better?

S50 leads the measured specs 9-2.

Measured wins

B15 Q: 2S50: 9Ties: 6

Choose B15 Q for

Weight
CPU speed

Choose S50 for

NFC
Resolution
RAM

Biggest differences

NFCS50

NovsYes+100%

ResolutionS50

480 × 800 pxvs720 × 1280 px+58%

RAMS50

1.0 GBvs2.0 GB+50%

StorageS50

4 GBvs8 GB+50%

B15 Q

Cat

AView Details

S50

Cat

BView Details

Head-to-head comparison

B15 Q

spec wins

Ties

equal specs

S50

spec wins

Overall winner

Display

Screen size

B15 Q4.0"

S504.7"+15%

Resolution

B15 Q480 × 800 px

S50720 × 1280 px+58%

Refresh rate

B15 Q—

S50—

Peak brightness

B15 Q—

S50—

Pixel density

B15 Q233 ppi

S50312 ppi+25%

Performance

CPU speed

B15 QQuad-core 1.3 GHz Cortex-A7+7.7%

S50Quadcore 1.2 GHz Cortex-A7

RAM

B15 Q1.0 GB

S502.0 GB+50%

Storage

B15 Q4 GB

S508 GB+50%

Cameras

Main camera

B15 Q5.0 MP

S508.0 MP+38%

Front camera

B15 Q—

S50—

Battery

B15 Q2,000 mAh

S502,630 mAh+24%

Wired charging

B15 Q—

S50—

Build

Weight

B15 Q170 g+8.8%

S50185 g

Thickness

B15 Q15.0 mm

S5012.7 mm+18%

IP rating

equal specs

B15 QIP67

S50IP67

Connectivity

Wi‑Fi

B15 QWi-Fi 802.11 b/g/n, hotspot

S50Wi-Fi 802.11 b/g/n, hotspot

Bluetooth

equal specs

B15 Q4.0, A2DP, LE

S504.0, A2DP, LE

USB

equal specs

B15 QmicroUSB 2.0

S50microUSB 2.0, OTG

5G support

equal specs

B15 QNo

S50No

NFC

B15 QNo

S50Yes+100%

3.5mm jack

equal specs

B15 QYes

S50Yes

SD card

equal specs

B15 QYes

S50Yes

Stereo speakers

B15 Q—

S50—

B15 QSpecS50

Display

4.0"

Screen size

4.7"+15%

480 × 800 px

Resolution

720 × 1280 px+58%

—

Refresh rate

—

Peak brightness

—

233 ppi

Pixel density

312 ppi+25%

Performance

Quad-core 1.3 GHz Cortex-A7+7.7%

CPU speed

Quadcore 1.2 GHz Cortex-A7

1.0 GB

RAM

2.0 GB+50%

4 GB

Storage

8 GB+50%

Cameras

5.0 MP

Main camera

8.0 MP+38%

—

Front camera

—

Battery

2,000 mAh

Battery

2,630 mAh+24%

—

Wired charging

—

Build

170 g+8.8%

Weight

185 g

15.0 mm

Thickness

12.7 mm+18%

IP67

IP ratingequal specs

IP67

Connectivity

Wi-Fi 802.11 b/g/n, hotspot

Wi‑Fi

Wi-Fi 802.11 b/g/n, hotspot

4.0, A2DP, LE

Bluetoothequal specs

4.0, A2DP, LE

microUSB 2.0

USBequal specs

microUSB 2.0, OTG

5G supportequal specs

NFC

Yes+100%

Yes

3.5mm jackequal specs

Yes

SD cardequal specs

Yes

—

Stereo speakers

—

Specifications Comparison

Network

Technology

B15 Q

GSM / HSPA

S50

GSM / HSPA / LTE

2G bands

B15 Q

GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2

S50

GSM 850 / 900 / 1800 / 1900

3G bands

B15 Q

HSDPA 850 / 900 / 2100 - EU, EMEA, HSDPA 850 / 1700 / 1900 / 2100 - Latin America

S50

HSDPA 850 / 900 / 2100 , HSDPA 850 / 1700 / 1900 / 2100

Speed

B15 Q

HSPA 21.1/5.76 Mbps

S50

HSPA, LTE Cat4 150/50 Mbps

4G bands

B15 Q

S50

1, 3, 5, 7, 8, 20

GSM / HSPATechnologyGSM / HSPA / LTE

GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 22G bandsGSM 850 / 900 / 1800 / 1900

HSDPA 850 / 900 / 2100 - EU, EMEA, HSDPA 850 / 1700 / 1900 / 2100 - Latin America3G bandsHSDPA 850 / 900 / 2100 , HSDPA 850 / 1700 / 1900 / 2100

HSPA 21.1/5.76 MbpsSpeedHSPA, LTE Cat4 150/50 Mbps

-4G bands1, 3, 5, 7, 8, 20

Launch

Announced

B15 Q

2014, Q2. Released 2014, June

S50

2014, September. Released 2014, November

Status

B15 Q

Discontinued

S50

Discontinued

2014, Q2. Released 2014, JuneAnnounced2014, September. Released 2014, November

DiscontinuedStatusDiscontinued

Body

Dimensions

B15 Q

125 x 69.5 x 15 mm (4.92 x 2.74 x 0.59 in)

S50

144.5 x 77 x 12.7 mm (5.69 x 3.03 x 0.5 in)

Weight

B15 Q

170 g (6.00 oz)

S50

185 g (6.53 oz)

SIM

B15 Q

Dual SIM (Mini-SIM, dual stand-by)

S50

Micro-SIM

Other

B15 Q

IP67 dust/water resistant (up to 1m for 30 min) MIL-STD-810G compliant Drop resistant up to 1.8m

S50

IP67 dust/water resistant (up to 1m for 30 min) MIL-STD-810G compliant Drop resistant up to 1.2m

125 x 69.5 x 15 mm (4.92 x 2.74 x 0.59 in)Dimensions144.5 x 77 x 12.7 mm (5.69 x 3.03 x 0.5 in)

170 g (6.00 oz)Weight185 g (6.53 oz)

Dual SIM (Mini-SIM, dual stand-by)SIMMicro-SIM

IP67 dust/water resistant (up to 1m for 30 min) MIL-STD-810G compliant Drop resistant up to 1.8mOtherIP67 dust/water resistant (up to 1m for 30 min) MIL-STD-810G compliant Drop resistant up to 1.2m

Display

Type

B15 Q

TFT

S50

IPS LCD

Size

B15 Q

4.0 inches, 45.5 cm2 (~52.4% screen-to-body ratio)

S50

4.7 inches, 60.9 cm2 (~54.7% screen-to-body ratio)

Resolution

B15 Q

480 x 800 pixels, 5:3 ratio (~233 ppi density)

S50

720 x 1280 pixels, 16:9 ratio (~312 ppi density)

Protection

B15 Q

Corning Gorilla Glass

S50

Corning Gorilla Glass 3

TFTTypeIPS LCD

4.0 inches, 45.5 cm2 (~52.4% screen-to-body ratio)Size4.7 inches, 60.9 cm2 (~54.7% screen-to-body ratio)

480 x 800 pixels, 5:3 ratio (~233 ppi density)Resolution720 x 1280 pixels, 16:9 ratio (~312 ppi density)

Corning Gorilla GlassProtectionCorning Gorilla Glass 3

Platform

B15 Q

Android 4.4.2 (KitKat)

S50

Android 4.4 (KitKat)

Chipset

B15 Q

Mediatek MT6582M (28 nm)

S50

Qualcomm MSM8926 Snapdragon 400 (28 nm)

CPU

B15 Q

Quad-core 1.3 GHz Cortex-A7

S50

Quadcore 1.2 GHz Cortex-A7

GPU

B15 Q

Mali-400MP2

S50

Adreno 305

Android 4.4.2 (KitKat)OSAndroid 4.4 (KitKat)

Mediatek MT6582M (28 nm)ChipsetQualcomm MSM8926 Snapdragon 400 (28 nm)

Quad-core 1.3 GHz Cortex-A7CPUQuadcore 1.2 GHz Cortex-A7

Mali-400MP2GPUAdreno 305

Memory

Card slot

B15 Q

microSDHC

S50

microSDXC (dedicated slot)

Internal

B15 Q

4GB 1GB RAM

S50

8GB 2GB RAM

Other

B15 Q

S50

eMMC 4.5

microSDHCCard slotmicroSDXC (dedicated slot)

4GB 1GB RAMInternal8GB 2GB RAM

-OthereMMC 4.5

Main Camera

Single

B15 Q

5 MP, AF

S50

8 MP, AF

Features

B15 Q

LED flash

S50

LED flash

Video

B15 Q

1080p@30fps

S50

1080p@30fps

5 MP, AFSingle8 MP, AF

LED flashFeaturesLED flash

1080p@30fpsVideo1080p@30fps

Selfie camera

Single

B15 Q

VGA

S50

VGA

Video

B15 Q

S50

VGASingleVGA

Video

Sound

Loudspeaker

B15 Q

Yes

S50

Yes

3.5mm jack

B15 Q

Yes

S50

Yes

YesLoudspeakerYes

Yes3.5mm jackYes

Comms

WLAN

B15 Q

Wi-Fi 802.11 b/g/n, hotspot

S50

Wi-Fi 802.11 b/g/n, hotspot

Bluetooth

B15 Q

4.0, A2DP, LE

S50

4.0, A2DP, LE

Positioning

B15 Q

GPS

S50

GPS, GLONASS

NFC

B15 Q

S50

Yes

Radio

B15 Q

FM radio

S50

FM radio

USB

B15 Q

microUSB 2.0

S50

microUSB 2.0, OTG

Wi-Fi 802.11 b/g/n, hotspotWLANWi-Fi 802.11 b/g/n, hotspot

4.0, A2DP, LEBluetooth4.0, A2DP, LE

GPSPositioningGPS, GLONASS

NoNFCYes

FM radioRadioFM radio

microUSB 2.0USBmicroUSB 2.0, OTG

Features

Sensors

B15 Q

Accelerometer, proximity

S50

Accelerometer, proximity, compass

Accelerometer, proximitySensorsAccelerometer, proximity, compass

Battery

Type

B15 Q

Li-Ion 2000 mAh, removable

S50

Li-Ion 2630 mAh, non-removable

Stand-by

B15 Q

Up to 504 h

S50

Up to 792 h

Talk time

B15 Q

Up to 16 h

S50

Up to 16 h

Charging

B15 Q

S50

Wireless (Qi)

Li-Ion 2000 mAh, removableTypeLi-Ion 2630 mAh, non-removable

Up to 504 hStand-byUp to 792 h

Up to 16 hTalk timeUp to 16 h

-ChargingWireless (Qi)

Misc

Colors

B15 Q

Black

S50

Forest, Slate

Price

B15 Q

About 320 EUR

S50

About 460 EUR

BlackColorsForest, Slate

About 320 EURPriceAbout 460 EUR

B15 Q vs S50

Quick verdict

Which is better?

S50 leads the measured specs 9-2.

Measured wins

B15 Q: 2S50: 9Ties: 6

Choose B15 Q for

Weight
CPU speed

Choose S50 for

NFC
Resolution
RAM

Biggest differences

NFCS50

NovsYes+100%

ResolutionS50

480 × 800 pxvs720 × 1280 px+58%

RAMS50

1.0 GBvs2.0 GB+50%

StorageS50

4 GBvs8 GB+50%

Head-to-head comparison

B15 Q

spec wins

Ties

equal specs

S50

spec wins

Overall winner

Display

Screen size

B15 Q4.0"

S504.7"+15%

Resolution

B15 Q480 × 800 px

S50720 × 1280 px+58%

Refresh rate

B15 Q—

S50—

Peak brightness

B15 Q—

S50—

Pixel density

B15 Q233 ppi

S50312 ppi+25%

Performance

CPU speed

B15 QQuad-core 1.3 GHz Cortex-A7+7.7%

S50Quadcore 1.2 GHz Cortex-A7

RAM

B15 Q1.0 GB

S502.0 GB+50%

Storage

B15 Q4 GB

S508 GB+50%

Cameras

Main camera

B15 Q5.0 MP

S508.0 MP+38%

Front camera

B15 Q—

S50—

Battery

B15 Q2,000 mAh

S502,630 mAh+24%

Wired charging

B15 Q—

S50—

Build

Weight

B15 Q170 g+8.8%

S50185 g

Thickness

B15 Q15.0 mm

S5012.7 mm+18%

IP rating

equal specs

B15 QIP67

S50IP67

Connectivity

Wi‑Fi

B15 QWi-Fi 802.11 b/g/n, hotspot

S50Wi-Fi 802.11 b/g/n, hotspot

Bluetooth

equal specs

B15 Q4.0, A2DP, LE

S504.0, A2DP, LE

USB

equal specs

B15 QmicroUSB 2.0

S50microUSB 2.0, OTG

5G support

equal specs

B15 QNo

S50No

NFC

B15 QNo

S50Yes+100%

3.5mm jack

equal specs

B15 QYes

S50Yes

SD card

equal specs

B15 QYes

S50Yes

Stereo speakers

B15 Q—

S50—

B15 QSpecS50

Display

4.0"

Screen size

4.7"+15%

480 × 800 px

Resolution

720 × 1280 px+58%

—

Refresh rate

—

Peak brightness

—

233 ppi

Pixel density

312 ppi+25%

Performance

Quad-core 1.3 GHz Cortex-A7+7.7%

CPU speed

Quadcore 1.2 GHz Cortex-A7

1.0 GB

RAM

2.0 GB+50%

4 GB

Storage

8 GB+50%

Cameras

5.0 MP

Main camera

8.0 MP+38%

—

Front camera

—

Battery

2,000 mAh

Battery

2,630 mAh+24%

—

Wired charging

—

Build

170 g+8.8%

Weight

185 g

15.0 mm

Thickness

12.7 mm+18%

IP67

IP ratingequal specs

IP67

Connectivity

Wi-Fi 802.11 b/g/n, hotspot

Wi‑Fi

Wi-Fi 802.11 b/g/n, hotspot

4.0, A2DP, LE

Bluetoothequal specs

4.0, A2DP, LE

microUSB 2.0

USBequal specs

microUSB 2.0, OTG

5G supportequal specs

NFC

Yes+100%

Yes

3.5mm jackequal specs

Yes

SD cardequal specs

Yes

—

Stereo speakers

—

Specifications Comparison

Network

Technology

B15 Q

GSM / HSPA

S50

GSM / HSPA / LTE

2G bands

B15 Q

GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2

S50

GSM 850 / 900 / 1800 / 1900

3G bands

B15 Q

HSDPA 850 / 900 / 2100 - EU, EMEA, HSDPA 850 / 1700 / 1900 / 2100 - Latin America

S50

HSDPA 850 / 900 / 2100 , HSDPA 850 / 1700 / 1900 / 2100

Speed

B15 Q

HSPA 21.1/5.76 Mbps

S50

HSPA, LTE Cat4 150/50 Mbps

4G bands

B15 Q

S50

1, 3, 5, 7, 8, 20

GSM / HSPATechnologyGSM / HSPA / LTE

GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 22G bandsGSM 850 / 900 / 1800 / 1900

HSDPA 850 / 900 / 2100 - EU, EMEA, HSDPA 850 / 1700 / 1900 / 2100 - Latin America3G bandsHSDPA 850 / 900 / 2100 , HSDPA 850 / 1700 / 1900 / 2100

HSPA 21.1/5.76 MbpsSpeedHSPA, LTE Cat4 150/50 Mbps

-4G bands1, 3, 5, 7, 8, 20

Launch

Announced

B15 Q

2014, Q2. Released 2014, June

S50

2014, September. Released 2014, November

Status

B15 Q

Discontinued

S50

Discontinued

2014, Q2. Released 2014, JuneAnnounced2014, September. Released 2014, November

DiscontinuedStatusDiscontinued

Body

Dimensions

B15 Q

125 x 69.5 x 15 mm (4.92 x 2.74 x 0.59 in)

S50

144.5 x 77 x 12.7 mm (5.69 x 3.03 x 0.5 in)

Weight

B15 Q

170 g (6.00 oz)

S50

185 g (6.53 oz)

SIM

B15 Q

Dual SIM (Mini-SIM, dual stand-by)

S50

Micro-SIM

Other

B15 Q

IP67 dust/water resistant (up to 1m for 30 min) MIL-STD-810G compliant Drop resistant up to 1.8m

S50

IP67 dust/water resistant (up to 1m for 30 min) MIL-STD-810G compliant Drop resistant up to 1.2m

125 x 69.5 x 15 mm (4.92 x 2.74 x 0.59 in)Dimensions144.5 x 77 x 12.7 mm (5.69 x 3.03 x 0.5 in)

170 g (6.00 oz)Weight185 g (6.53 oz)

Dual SIM (Mini-SIM, dual stand-by)SIMMicro-SIM

IP67 dust/water resistant (up to 1m for 30 min) MIL-STD-810G compliant Drop resistant up to 1.8mOtherIP67 dust/water resistant (up to 1m for 30 min) MIL-STD-810G compliant Drop resistant up to 1.2m

Display

Type

B15 Q

TFT

S50

IPS LCD

Size

B15 Q

4.0 inches, 45.5 cm2 (~52.4% screen-to-body ratio)

S50

4.7 inches, 60.9 cm2 (~54.7% screen-to-body ratio)

Resolution

B15 Q

480 x 800 pixels, 5:3 ratio (~233 ppi density)

S50

720 x 1280 pixels, 16:9 ratio (~312 ppi density)

Protection

B15 Q

Corning Gorilla Glass

S50

Corning Gorilla Glass 3

TFTTypeIPS LCD

4.0 inches, 45.5 cm2 (~52.4% screen-to-body ratio)Size4.7 inches, 60.9 cm2 (~54.7% screen-to-body ratio)

480 x 800 pixels, 5:3 ratio (~233 ppi density)Resolution720 x 1280 pixels, 16:9 ratio (~312 ppi density)

Corning Gorilla GlassProtectionCorning Gorilla Glass 3

Platform

B15 Q

Android 4.4.2 (KitKat)

S50

Android 4.4 (KitKat)

Chipset

B15 Q

Mediatek MT6582M (28 nm)

S50

Qualcomm MSM8926 Snapdragon 400 (28 nm)

CPU

B15 Q

Quad-core 1.3 GHz Cortex-A7

S50

Quadcore 1.2 GHz Cortex-A7

GPU

B15 Q

Mali-400MP2

S50

Adreno 305

Android 4.4.2 (KitKat)OSAndroid 4.4 (KitKat)

Mediatek MT6582M (28 nm)ChipsetQualcomm MSM8926 Snapdragon 400 (28 nm)

Quad-core 1.3 GHz Cortex-A7CPUQuadcore 1.2 GHz Cortex-A7

Mali-400MP2GPUAdreno 305

Memory

Card slot

B15 Q

microSDHC

S50

microSDXC (dedicated slot)

Internal

B15 Q

4GB 1GB RAM

S50

8GB 2GB RAM

Other

B15 Q

S50

eMMC 4.5

microSDHCCard slotmicroSDXC (dedicated slot)

4GB 1GB RAMInternal8GB 2GB RAM

-OthereMMC 4.5

Main Camera

Single

B15 Q

5 MP, AF

S50

8 MP, AF

Features

B15 Q

LED flash

S50

LED flash

Video

B15 Q

1080p@30fps

S50

1080p@30fps

5 MP, AFSingle8 MP, AF

LED flashFeaturesLED flash

1080p@30fpsVideo1080p@30fps

Selfie camera

Single

B15 Q

VGA

S50

VGA

Video

B15 Q

S50

VGASingleVGA

Video

Sound

Loudspeaker

B15 Q

Yes

S50

Yes

3.5mm jack

B15 Q

Yes

S50

Yes

YesLoudspeakerYes

Yes3.5mm jackYes

Comms

WLAN

B15 Q

Wi-Fi 802.11 b/g/n, hotspot

S50

Wi-Fi 802.11 b/g/n, hotspot

Bluetooth

B15 Q

4.0, A2DP, LE

S50

4.0, A2DP, LE

Positioning

B15 Q

GPS

S50

GPS, GLONASS

NFC

B15 Q

S50

Yes

Radio

B15 Q

FM radio

S50

FM radio

USB

B15 Q

microUSB 2.0

S50

microUSB 2.0, OTG

Wi-Fi 802.11 b/g/n, hotspotWLANWi-Fi 802.11 b/g/n, hotspot

4.0, A2DP, LEBluetooth4.0, A2DP, LE

GPSPositioningGPS, GLONASS

NoNFCYes

FM radioRadioFM radio

microUSB 2.0USBmicroUSB 2.0, OTG

Features

Sensors

B15 Q

Accelerometer, proximity

S50

Accelerometer, proximity, compass

Accelerometer, proximitySensorsAccelerometer, proximity, compass

Battery

Type

B15 Q

Li-Ion 2000 mAh, removable

S50

Li-Ion 2630 mAh, non-removable

Stand-by

B15 Q

Up to 504 h

S50

Up to 792 h

Talk time

B15 Q

Up to 16 h

S50

Up to 16 h

Charging

B15 Q

S50

Wireless (Qi)

Li-Ion 2000 mAh, removableTypeLi-Ion 2630 mAh, non-removable

Up to 504 hStand-byUp to 792 h

Up to 16 hTalk timeUp to 16 h

-ChargingWireless (Qi)

Misc

Colors

B15 Q

Black

S50

Forest, Slate

Price

B15 Q

About 320 EUR

S50

About 460 EUR

BlackColorsForest, Slate

About 320 EURPriceAbout 460 EUR