Re: Losing phone number
We took our phone number with us when we moved house 8 years ago. Stayed in the same area code, and decided to move our broadband contract with us to the new house, but we could still have changed provider and kept the number. My parents have changed phone provider at least twice at the same address and kept their phone number.
Same goes for mobile, it's pretty easy to get your mobile number moved to a new contract with a different provider, or even easier to get it moved to a new sim if you lose your phone.