I was thinking about this one, but I do not know much Zopo models and my key decider was the battery life of Lenovo. This one may suit your requirements:
ZOPO ZP950 Leader MAX Free DHL Android 4.1 Dual Core Dual Sim 5.7 inch 8.0MP Jelly Bean  - US$279.99 - Smartphone Professional - EtoTalk
Does anyone own this model?
There is also very costy dual sim Samsung Galaxy Note II, but I do not know if it is official or not:
Samsung GALAXY Note II N7102 16G Android4.1 DSFA Quad Core 1.6GHz Dual Sim 5.5 1280x720 GALAXY Note II 3G WCDMA Android4.0 Quad 1.6GHz Dual core Dual Sim 5.5HD  - US$899.99 - Smartphone Professional - EtoTalk
Originally Posted by apple2005
Thanks Emilf for your reply...I can wait for 1 or two months but I need a good ,a bigger (like e,g 5" inch screen) and dual sim supported phone...I will be using it mainly as phone and facebook plus internet surfing, rarely youtube videos...BTW what is coming next and specs? Thanks once again.