now as we can see, they have an ability to use some chameleon-esque mimicry, but it is flawed, as it only works on one side, and if that side is laying perfectly still against a surface and the phone is not being touched, it will simply be its normal color.
phones are known to adopt hard shells, akin to hermit crabs, but do not necessarily always have them or apparently need them, as they sometimes survive through extraordinary circumstances.