I tried to log into my Kakao Account from Kakao Talk and was asked to enter my previous phone number. Why do I need my previous phone number?
Previous phone number is the phone number of the device used to log in with the Kakao Account recently.
To prevent other people from using your Kakao Account, you must provide your previous phone number if you want to log into Kakao Talk from a device different from the one whose number is associated with your Kakao Account.
Please enter the phone number you previously verified for KakaoTalk.
* If Kakao Talk is still installed on your previous device, you can find the previously verified phone number in Kakao Talk > More > Edit Profile.
* To protect your Kakao Account, you may attempt to enter your previous phone number up to 5 times. After 5 incorrect attempts, you will have to try again later.
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