not officially stated as ninetology product in their website,may it b not so well built unit? 
if not dual sim then no need to considered d.

Insight is starting to sound really stupid to me. Why increase the screen size??? Make it more laggy?

http://www.lelong.com.my/ninetology-stealt...7-01-Sale-I.htm

this seller selling the above picture case, which is for stealth 2 but if you read the comments, they got new shipment for the black pearl 2.

However, at this kind of prices, forget it.

Even turned off one of the sim card cell signal for overnight also not helping. Battery level keep draining even during idling/sleep.

Apps can't move to external SD card is also another problem.