Doubt regarding my E-commerce on android using mobile joomla

Hi guys,
I have installed mobile joomla onto my shopping cart site , but main problem is when i viewed site from LG android mobile and performed add to cart ! then it wont be added to cart! or cart is not updated ! i have check all the settings but didnt got it!
Can u please help me wats the problem?
thanks for your consideration,
Rupesh

why add to cart is not working on android? Plz reply guys!