I have a ZTE Staraddict SFR from France (I'm french).
I have installed AtomicMod, it works great, but the battery's life is poor.
Maybe I need to change kernel for the S2.
When I look in settings/about the phone, I see : "Version de bande de base : P743B01"
So I don't know which kernel I have to install, "SFR Staraddict Kernel" or "P743B Kernel" ??
Try the 2 kernel versions , and see if it works for you