SAMSUNG
1. SAMSUNG GALAXY MEGA 5.8 
 
   Screen size :- 540 * 960 pixels
 5.8 inch tft capacitive touch screen ( 190 ppi pixel density )
.
    Memory :- 8 GB internal stoarge, 1.5 GB ram.
   External memory :- Micro sd upto 64 GB.
   Camera :- Primary - 8 MP auto focus led flash light.
                      Secondary - 1.9 MP. 
   OS :- ANDROID 4.2 ( Jelly bean ).
   CPU :- 1.4 GHz dual core 
   Battery :-  Li-Ion 2600 mAH.
2. SAMSUNG GALAXY MEGA 6.3 OR I 9200

   Screen size :- 720 * 
1280 pixels
 6.
3 inch tft capacitive touch screen ( 233 ppi pixel density )
.
    Memory :- 8 / 16GB internal stoarge, 1.5 GB ram.
   External memory :- Micro sd upto 64 GB.
   Camera :- Primary - 8 MP auto focus led flash light.
                      Secondary - 1.9 MP. 
   OS :- ANDROID 4.2 ( Jelly bean ).
   CPU :- 1.7  GHz krait dual core 
   Battery :-  Li-Ion 3200 mAH.
3. SAMSUNG GALAXY GRAND QUATTRO
 
   Screen size :- 480 * 800 pixels
 4.
7 inch tft capacitive touch screen ( 199 ppi pixel density )
.
    Memory :- 8 GB internal stoarge, 1 GB ram.
   External memory :- Micro sd upto 32 GB.
   Camera :- Primary - 5 MP auto focus led flash light.
                      Secondary - VGA . 
   OS :- ANDROID 4.1.2 ( Jelly bean ).
   CPU :- 1.2  GHz  Quad core Cortex - A5
   Battery :-  Li-Ion 2000 mAH.
HTC
1. HTC ONE
 
   Screen size :- 1080 * 
1920 pixels
 4.
7 inch super lcd 3 capacitive touch screen ( 469 ppi pixel density )
.
    Memory :- 32 / 64GB internal stoarge, 2 GB ram.
   External memory :- N . A .
   Camera :- Primary - 4 MP 2688 * 1520 pixels auto focus led flash light.
                      Secondary - 2.1 MP. 
   OS :- ANDROID 4.1.2 ( Jelly bean ). upgradable to 4.2.2
   CPU :- 1.7  GHz krait 300 Quad core 
   Battery :-  Li-Po 2300 mAH non removable
2. HTC BUTTERFLY
 
   Screen size :- 1080 * 
1920 pixels
 5 inch super lcd 3 capacitive touch screen ( 441 ppi pixel density )
.
    Memory :- 16 GB internal stoarge, 2 GB ram.
   External memory :- Micro sd upto 32 GB .
   Camera :- Primary - 8 MP 3264 * 2448 pixels auto focus led flash light.
                      Secondary - 2.1 MP. 
   OS :- ANDROID 4.1.2 ( Jelly bean ). upgradable to 4.2.2
   CPU :- 1.5  GHz krait  Quad core 
   Battery :-  Li-Po 2020 mAH non removable.
3. HTC WINDOWS 8X
 Screen size :- 720
   Screen size :- 720 * 
1280 pixels
 4.
3 inch super lcd 2 capacitive touch screen ( 342 ppi pixel density )
.
    Memory :- 16 GB internal stoarge, 1 GB ram.
   External memory :- N . A .
   Camera :- Primary - 8 MP 3264 * 2448 pixels auto focus led flash light.
                      Secondary - 2.1 MP. 
   OS :-  MICROSOFT WINDOWS 8
   CPU :- 1.5  GHz krait  Dual core 
   Battery :-  Li-Ion 1800 mAH non removable.
SONY
 SONY XPERIA M 
 
   Screen size :- 480 * 
854 pixels
 4 inch TFT capacitive touch screen ( 245 ppi pixel density )
.
    Memory :- 4 GB internal stoarge, 1 GB ram.
   External memory :- Micro sd upto 32 GB .
   Camera :- Primary - 5 MP 2592 * 1944 pixels auto focus led flash light.
                      Secondary - VGA. 
   OS :- ANDROID 4.1.2 ( Jelly bean ). upgradable to 4.2.2
   CPU :- 1 GHz krait  Dual core 
   Battery :-  Li-Ion 1750 mAH non removable.