Can I use an iPad charger with my iPhone 4? Is there any harm in using the iPad charger for iPhone 4?
The iPhone simply won't draw as much through the charger as the iPad would. Certainly shouldn't cause a problem at all (and my money's where my mouth is because we just have the iPad charger plugged in these days, using it for our iPad as well as our 2 iPhone 4s - we've been doing this for about 5-6 weeks now without any obvious ill-effects).