For example, service providers can use the phone number to challenge those who try to break into your account, and can send you a verification code so you can get into your account if you ever lose access.
Kwa mfano, watoa huduma wanaweza kutumia nambari yako ya simu kutoa changamoto kwa wale wanaojaribu kuingia kwenye akaunti yako bila idhini, na kukutumia msimbo wa uthibitishaji ili uweze kuingia kwenye akaunti yako endapo utawahi poteza ufikiaji.