AT&T Z331 - Manual (Page 8)

. Hold.the.Power/End Key.to.turn.off.the.phone.
. Remove.the.back.cover.of.your.phone.
. Carefully.insert.the.battery.with.the.contacts.located.against.the.metal.springs.
. Push.down.the.battery.until.it.clicks.into.place.
. Replace.the.cover.on.the.back.of.the.phone.
Caution:.Make sure the cover is lined up before pressing it into place. Do not force
it. Doing so will damage the back cover.
Removing the Battery
. Hold.the.Power/End Key.to.turn.off.the.phone.
. Remove.the.back.cover.of.your.phone.
. Lift.the.end.of.the.battery.near.the.bottom.of.the.phone.to.remove.it.
2 Getting.Started