LAVA 406Q is a basic handset with perhaps the best specs (CPU + RAM + Battery) in sub 10k range.
My purpose is to use it as a Dash Cam in my car, Check here http://www.rimweb.in/forums/topic/36575-help-for-tasker-programming/
Brief observations:
Battery life : With 3G ON, about 70 minutes talk time and 90-100 minutes screen ON and one SIM, more than 30 hours.
Display : Average, visibility in sun light - average, display color : Not so natural, Contrast : Average to poor.
Battery : 1700 mAH, LiPo - as on battery (Specs says LiON)
Audio quality : Music - below average - by ear plugs, POOR : on Speakers, Phone - acceptable on ear phone, Speaker - Poor.
No dedicated speaker for Ring and Audio it is routed through Ear piece only, so speaker quality is very poor.
Vibration alert : Average
NO LED NOTIFICATIONS for any thing.0
No Ambiance light sensor so Auto Brightness is just useless. It sets screen brightness to 50%
Over all Build : Good to average.
Camera : Average to Poor
Camera Flash : Weak
Touch Sensitivity and accuracy : No complaints for screen as well as capacitive buttons
Android : Almost stock JB 4.3 with Qualcomm Battery Guru preinstalled. Other preinstalled softs are whatsapp, Twitter, Office suite, Email for Exchange, GAPPS
Available on board Memory : 1.5 GB, in setting there is option to select default installation location as Internal / external memory
GPS Performance : Excellent, better than my NOTE 2
Software bugs : Has not hanged so far in last 10 days but when I installed SWIFT KEY, input method changes to default after every reboot or some times MAY BE randomly.
RAM : I have not felt that it needs more RAM to do basic jobs or productivity jobs. I gave my son to play subway surfer to check if it stalls but he did not complaint. Office, E mail, Browser works smoothly. Large page rendering takes time probably because of Android stock browser and 300 MB Free RAM. RAM management is good. I have not observed phone becoming sluggish.