Hi I am new to iphones and my 3g phone seems to have a short battery life. The location service is turned off, as is wifi, bluetooth. It has gone from full battery to 10% in twenty hours, with perhaps 2min call. I have reset and seems to make no difference. The phone was bought new on e-bay and arrived as an O2 (UK carrier) Refurb with apple warranty ect. The phone looked unused and I have had it about a month. Is it time to go and see the Apple guys before warranty is out or is this the normal.?