NEED HELP WITH ZOHO IPHONE

NEED HELP WITH ZOHO IPHONE

Hello dear Sir: I have recieved an Iphone class Zoho iPHone(V8 dual sim quad band),I need to know the answers to these questions:
*Is there any chance to update the phone software in order to make it possible to read other e-books format rather than "txt"? mine phone only read them and no other format,is this normal?
*Is there any chance to load other games than bejewelled and the other 2 ones? how can it be possible?
Thank you very much and best wishes.
Rodolfo