Re: first smartphone..
I use a program called advanced task killer to keep background programs from running. Before I used that program, I was lucky to get 6, maybe 8 hours on a full charge.. Now, I can manage 12 to 16. Not much of an improvement, but it helps. I've noticed that also keeping the phone updated as far as firmware and Android versions helps, as well.
I have an HTC Evo 4G btw...
My Computer: eMachines T5226 - Intel Pentium D Dual Core @ 3 GHz - Diamond Viper Radeon HD3870 OC Edition with 1 GB GDDR3 VRAM - 4 GB PQi Turbo DDR2-533 RAM - Corsair 650W PSU with 52A on single rail - TSSTcorp DVD-DL+-RW combo drive - Lite-on 52x CD-RW burner - Creative SoundBlaster X-Fi XtremeGamer - Logitech z5300e speakers - WinFast TV Tuner - Vista Ultimate 64-Bit. eBay name: Flightsimboy304