Advanced search for boolean field

What I expect

Suppose I have a field called bound to my phone whose value is True for all accounts bound to my phone (registered by my phone, or set with a recovery method using my phone, or something else). Once I change my phone number, I want to find all accounts bound to my old phone number which should be modified.

What is the present status

Now advanced search is not supported on boolean field, so I have to write ‘bound to my phone’ into notes of these accounts which is not straight-forward.