Some Android phones - Galaxy Stylus vs physical Keyboard

Samsung Galaxy Note 4 SM910F

aka Samsung Muscat
By default: Android OS, v4
Now 6.0.1 Marshmallow

SIM micro-SIM (3FF)
RAM 3GB
Internal Memory 32GB (space available for application or data)
Ext MicroSD: up to xxxGB

1440 x 2560 pixels, 5.7 inches,515ppi

Batt. 3220mAh
Charger technology: Qualcomm Quick Charge 2.0

CPU    2.7 GHz quad core
Qualcomm APQ8084 Snapdragon 805
Quad-core 2.7 GHz Krait 450 - Snapdragon 805
Cores: 1.3GHz A53 

Architecture: ARMv7-I (32bits) (comp ARMv7-a)
GPU:   Adreno 420
Family designed by:

Others:
LTE Cat4 800/850/900/1700/1800/1900/2100/2600 (Bands 1,2,3,4,5,7,8,20)
TV-Out: Micro-B USB - MHL-3
Bluetooth:4.1 version A2DP
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Memory and paths/alias:

/sdcard/   (/storage/self/primary) alias of  /storage/emulated/0/
/storage/0000-0000/ (external)
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Info/facts:
Game Optimizing Service . needed by Game Tuner to operate.


Customization:



http://bloglon.blogspot.com/2014/12/android-free-of-google-limitations.html

Samsung Galaxy Chat GT-B5330

By default: Android OS, v4.0 (Ice Cream Sandwich)
now OS 4.1.2 Jelly Bean
Base B5330XXUBMC2

RAM 512MB
Internal Memory 2GB (space available for application or data)
Ext SD: up to 32 GB

240 x 320 pixels, 3.0 inches (~133 ppi pixel density)
Touchwiz UX UI
Java, via Java MIDP emulator

HSDPA, 7.2 Mbps; HSUPA, 5.76 Mbps
Wi-Fi 802.11 b/g/n, Wi-Fi hotspot
Bluetooth v3.0 with A2DP
microUSB v2.0
CAMERA : 2 MP, 1600x1200 pixels Records VGA@25fps
Accelerometer, proximity, compass
A-GPS support and GLONASS


CPU    850 MHz*
Family designed by: ARM Cortex-A9

Architecture: ARMv7-A


BCM2165X
High-speed ARM Cortex A9 processor for superior applications processing and advanced user interface support along with an ARM Cortex R4 communications processor