Microsoft Lumia 540 dual

                     Microsoft Lumia 540 dual

NETWORK type :

GSM / HSPA

3G band : HSDPA 900 / 2100

2G band : GSM 850 / 900 / 1800 / 1900 = SIM 1 & SIM 2.

Speed : HSPA 42.2/5.76 Mbps

GPRS : available.

EDGE Up to 234 kbps.

LAUNCH Announcement date : April 2015.

Status : Available in market.

Device Dimensions :  (144 x 73.7 x 9.4) mm.  (5.67 x 2.90 x 0.37 inch)

Weight(only device) : 152 g (5.36 oz)

SIM status :  Dual SIM (Micro-SIM, dual stand-by)

DISPLAY technology : LCD IPS  capacitive touchscreen with 16M colors.

Monitor Size : 5.0 inches (~64.9% screen to body ratio)

Resolution : { 720 x 1280 } pixels (~294 ppi pixel density)

New feature : ClearBlack display.

Operating system : Microsoft Windows version 8.1 with Lumia Denim.

CPU : Quad-core 1.2 GHz Cortex-A7.

Chipset : Qualcomm Snapdragon 200.

GPU : Adreno 302.

Memory  Card slot :  microSD, up to 128 GB available.

Internal storage : 8 GB,  1 GB RAM available.

Primary Camera :  8 MP, [ 3264 x 2448 ] pixels, autofocus, LED flash light.

Features : 1/4'' sensor size, geo-tagging. Auto focusing with flash light. 

Video quality : 480p@30fps

Secondary 5 MP, 480p video record.

Alert types : Vibration; MP3, WAV ringtones

3.5mm jack Yap.

Wireless feature : Wi-Fi version 802.11 b/g/n, DLNA support , make device hotspot.

Bluetooth : v 4.0, A2DP technology.

GPS  : available with A-GPS, GLONASS.

Radio FM radio with RDS.

USB  system : micro USB v2.0

Sensor feature : proximity, Accelerometer,

Messaging type : SMS , MMS, Email, Push up Email, Instant Messaging(IM)

Browser : HTML 5

Java No

BATTERY : 2200 Li Ion mAh battery.

Stand-by : Up to 576 h (2G) / Up to 576 h (3G)

Talk time Up to 26.5 h (2G) / Up to 15.3 h (3G)

Music play Up to 81 hours.

Color availability : Blue , Gray ,White , Orange.

By Arif Hasan Shuvo

Oppo R7

                                                OPPO R7

NETWORK Type :

LTE , HSPA , GSM

2G bands : GSM 850 / 900 / 1800 / 1900 = SIM 1 & SIM 23G bands : HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - US. 

HSDPA 850 / 900 / 1900 / 2100 - Global.

4G bands : LTE band 1(2100), 3(1800), 7(2600), 8(900), 40(2300) - Global

  LTE : 1(2100), 3(1800), 5(850), 7(2600), 8(900), 28(700), 40(2300) - Taiwan  LTE : 1(2100), 3(1800), 4(1700/2100), 7(2600), 17(700), 20(800) - US

Data Speed : HSPA, LTE Cat4 150/50 Mbps

GPRS : available.

EDGE : available.

Announcement : May,2015

Status : Expected date 2015, May

Device Dimensions : ( 143 x 71 x 6.3 )  mm (5.63 x 2.80 x 0.25 inch)

Weight (device) : 147 gm (5.19 oz)

SIM  : Dual SIM (Micro/Nano SIM, dual stand-by)

DISPLAY Type :  AMOLED capacitive touchscreen with 16M colors.

Size : 5.00 inches (~66.6% screen to body ratio)

Screen Resolution : { 1080 x 1920 } pixels (~ 446 ppi pixel density)

Multitouch : Yeap.

Protection System : Corning Gorilla Glass 3

 OPPO Color OS 2.1.

Operating System : Android KitKat version (4.4.2)

Chipset : Qualcomm MSM8939 Snapdragon 615

CPU : Quad-core 1.50 GHz Cortex-A53 with quad-core 1.0 GHz Cortex-A53

GPU : Adreno 405

Memory Card slot : Micro SD, available up to 128 GB (uses SIM 2 slot)

Internal storage : 16 GB, 

RAM : 3 GB.

Primary Camera : 13 MP, { 4128 x 3096 } pixels, Schneider-Kreuznach optics, face detection autofocusing , LED flash light.

Features : Continuous auto focusing , Geo-tagging, , face detection, touch focus , sweep panorama with HDR.

Video : 1080p@30fps (full HD)

Secondary camera : awesome 8 MP selfie camera. 

Sound  types : Vibration; MP3, WAV ringtones

Loudspeaker : Yap.

3.5mm port : Yes

Wireless technology : Wi-Fi 802.11 b/g/n, Wi-Fi Direct connect, hotspot

Bluetooth : wireless v 4.0

GPS  : Yes with Additional -GPS, GLONASS .

Radio : FM & TBC.

USB  type : micro USB v 2.0, USB Host available.

Sensors type :  Accelerometer, compass, proximity

Messaging system : SMS/MMS/Email/Push Email.

Browser technology : HTML5

Java : Not available.

 Battery  : Fast battery charging : 75% in 30 min.

Non-removable Li-Poly  2320 mAh battery.

Color : Golden

By Arif Hasan Shuvo