1. is the battery removable ??
yes
2. how is the GSM/3G singal, any drops seen ? are both sim slots 3G enabled ???
signal is great. no idea about 3g, i use wifi.
3. How is the GPS locking, is it usable for navigation like sygic.
gps lock is instant! never used sygic.
4. any heating issues while playing games ???
not much, however gpu is mali 450 and scores 7k in antutu 3d test, where as mi3's adreno gpu scores 14k in 3d.
mi3 total score 40k vs xolo 8x-1100 total score 30k
5. how is the wifi signal strength say at 10feets ?
great
6. how is the battery life ??.
can last 1 day or more with moderate usage. I don't play games much.
7. how is the overall build quality ???
looks is awesome and extremely light weight and slim.
8. if possible can u make a video review and post it on youtube ???
nope.
9. are the capacitive buttons backlit ?
meaning? they r not on the screen, they are below the screen, and they r good & different design. not like samsung or mmx device.
10. can mv apps to SD card ?
yes.
Plus the reasons why i bought this model :
it has internal 16gb & its expandable via memory card slot and OTG support is also there.
It has sony camera on back and front
corning gorilla glass protection.
cheaper by 5k compared to all other octa core+2gb ram devices.
octa core MT6592 has technology Heterogeneous Multi-Processing (HMP), which is a more advanced version of big.LITTLE technology. In this setup, a processor can utilise all cores at the same time, or just a single core for low-intensity tasks. This can provide powerful performance or increased battery life respectively.
I can see most of the times in normal usage, only 2 cores are running and rest are sleeping, they get in to action, only when it's required.