Make sure the location service turn off, don't use Bluetooth, turn off push mail if u don't really need it. Turn on the 3g network when u need it, after all off, u shall be able to heavy use for 2 days by making 60 calls daily.

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Added on January 17, 2010, 5:36 pmMore solution is, don't use the made in china portable on 3gs phone.

This post has been edited by maxtor1: Jan 17 2010, 05:36 PM