I bought my iPhone 5 on launch day and the following day I noticed the freezing issue.
I went back to Apple a few days later and they said they would replace it but they had no stock. They told me to call customer support and they could send one to me as I live 40 miles from a store.
Great I thought, until I was told that I have to pay £600 on my card until the new one arrives. What a f*ckin joke!!!
I bit the bullet and went back the store the next day once they had stock.
After 2 days the fault appeared on my replacement phone.
Mine is totally random. Makes no difference if I'm using it, or if I pick it up and try to unlock it. It just dies.
It does it when opening apps, closing apps, receiving a call, clicking home to bring the phone out of sleep mode etc etc. Eventually it catches up and does all the presses/swipes I have done whilst frozen.
I have had every iPhone since launch and never had a freezing issue. I cannot help but feel that this would not have been released if Steve Jobs was still with us. It is a second rate product.
I said to my friends when Steve Jobs died, just watch, Apple will lose their way over the coming years and they will become a thing of the past.
It's already begun and I will probalby jump ship at next upgrade.