There is a guy at XDA (Janek69 , know him from earlier talks about the ZGPAX S8 ) .
I invited him to come and join us here .
He has got something interesting maybe concerning the KW88.
QUOTE >>>The engineer menu not accessible with ##3646633## like other MTK based phones,but toolhero can access. In baseban i disabled the unusable frequencies in my country. 850,1900MHz. I hope it’s give a little bit better battery life. <<<Unquote
Hope he will join us and let us know if it helped and how much more battery life it did give him.