I've never bothered with phone insurance as I think it's over-priced. My car insurance is about £300 in case I crash into someone etc or in case it gets stolen. It's not a fancy car by any means, but it's worth a few thousand. My house insurance is about £12 a month in case I come home from work and find I've been burgled or the house has flooded etc and covers me for £40,000 of conents. A phone, well it's a phone isn't it. I might drop it and break it or it might get stolen and that's about it really. I'm not going to write someone's car off with it, and It's not going to go wrong and wreck my house. When I got my iphone 3GS, they tried to hard-sell me the insurance. It was £12 a month with a £50 excess for the first 6 months then dropping to £25. They were saying that if i smash the screen, it will cost £100 to fix. I just said yes, but if I smash it in 3 months, I will have paid £86 with the insurance and the excess so I might as well risk it.
I'm not saying that the idea of insuring a phone isn't worth it and obviously if you have a new phone and it gets stolen after a month, then you are much better of if you took the insurance. It's just the cost.