actually maybe you need to think about what actually are you trying to insure. are you trying to insure for the cost of the phone or are you trying to insure for the lost of your phone. because while they might sound similar, they are very different.
the later is never possible to be insured because it is intangible. but the former is about the cost. so you need to decide if it is more worth paying an insurance for something while is expensive is still relatively a small sum of money, vs for other types of insurance where you pay for something where the payout is meant for bigger amount.
about what?