Iphone 3g or Blackberry Curve 9300? - 1

I want to take an Iphone 3g (used), but I read that his battery life's very, very short, so I thought to buy a blackberry curve 9300 (always used), 'cause maybe his battery life's more long

I wouldn't go with either. I very much dislike blackberry's so out of the two I'd say iPhone but I recently got a Nokia Lumia 620 which is a budget windows phone 8 with no differences to other windows 8 phones and no drawbacks which I've found in nearly a month of having it.

I'm with Joshua on the Blackberry; I had one but got rid of it after 2 weeks; it was rubbish to use.
I still have a 'spare' iPhone 3G, and the battery on it lasts about 4 days which I think is pretty good.
I love the iPhone so I'm biased.
Joshua does make a good point about budget smartphones though, one of my daughters has an HTC one C which cost about £100 and is really quite good.

Neither, they're both outdated and a pain to use as they're unsupported. Get an iPhone 4 bare minimum, or consider an android budget phone.