Comparison of BLU Studio X and Panasonic T21

Attribute	BLU Studio X ×	Panasonic T21 ×
General
Brand	Blu	Panasonic
Launch
Announced	2015-01-01	2013, Q3
Body
Width (mm)	10.5	9.8
Length (mm)	144	132
Height (mm)	72	66
Weight (g)	154	140
SIM	Dual SIM (Mini-SIM/ Micro-SIM, dual stand-by)	Dual SIM
Network
Technology	GSM HSPA	GSM HSPA
2G bands	GSM 850 / 900 / 1800 / 1900	GSM 850 / 900 / 1800 / 1900
3G bands	HSDPA 850 / 1700 / 1900 - D750U HSDPA 850 / 1900 / 2100	HSDPA 900 / 2100
Speed	HSPA 21.1/5.76 Mbps	HSPA
Platform
OS	Android 4.4.2 (KitKat)	Android 4.1 (Jelly Bean)
CPU	Quad-core 1.3 GHz Cortex-A7	Dual-core 1.2 GHz
GPU	Mali-400	-
Memory
Card slot	microSDXC	microSDHC (dedicated slot)
Internal	8GB 1GB RAM	4GB 1GB RAM
Display
Size (in)	5	4.5
Resolution (px)	720 x 1280	720 x 1280
Display Type	IPS LCD	IPS LCD
Battery
Type	Li-Ion	Li-Ion
Capcity (mAh)	2100	1700
Main Camera
Main Camera Type	Single	Single
Main Camera Properties	8 MP, AF	8 MP, AF
Main Camera Video	1080p@30fps	1080p@30fps
Main Camera Features	LED flash	LED flash
Selfie Camera
Selfie Camera Type	Single	Single
Selfie Camera Properties	2 MP	2 MP
Comms
WLAN	Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot	Wi-Fi 802.11 b/g/n, hotspot
Bluetooth	4.0, A2DP	2.1, A2DP
GPS	+	+
NFC	-	-
Radio	Stereo FM radio	FM radio
USB	microUSB 2.0	microUSB 2.0
Sound
Loudspeaker	+	+
3.5mm jack	+	+
Features
Sensors	Accelerometer gyro proximity	Accelerometer compass proximity
Misc
Colors	Black Blue Gold Pink White	Black White
Stand-by (h)	750	-
Talk time (h)	Up to 25 h (2G) / Up to 12 h (3G)	-