neither.
both using mtk chipset, in other word, chinese made crap chipset.

2nd largest or using by samsung doesn't always mean good.
wanna know why majority of chinese phones using mtk instead of qualcomm, or ti-omap or tegra?
because mtk is cheaper to mass produce than others.
cheaper cost=higher profit margin

replace samsung? i can't even understand what that means.
anyway, they didn't even follow gpl license agreement. thats another reason why manufacturers outside of china doesn't favor them instead of others. manufacturing chipset for android phone means u have to tinker and change something in android kernel which is gpl licensed, need to release that changed kernel part source afterwards, but they refuses to do so.

then those lenovo phones suites u well already.
got big screen, big battery and fairly cheap too.
anyway between both the lenovo u listed, the P780 got higher capacity battery so its safe to assume that it would give u much longer battery life than the S920.

This post has been edited by axxer: Oct 17 2013, 02:08 PM