One of my mates has a HTC desire and he said the battery is terrible, he goes everywhere with his charger. I don't actually know of anyone with iphone 4 hence the reason for starting the thread. Just wanted to know if u could get free satnav app on the iphone 4. I don't actually want to be paying for the TomTom app purely because i have the Nurrish satnav on my Zed anyway. It's useful to have satnav features on my mobile when i am driving something else.