There are these things called EXTENDED BATTERY PACKS that can fit into n a pocket or on a keychain. depends on your battery needs. Just bought a 9000 mah extended pack from Verizon. My wife carries it. I also own a mophie pack on my keychain. 1000 mah. As far as storage, that is a personal preference. I remember when iphones maxed at 16. Dont see myself needing more than that. Got 6 gb of music. The rest of the space can be managed.
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