Apple id

Sagarpatel2412 Said:

”Apple id: I am using different Iphone before i purchased 8+ but i try to login apple id but i cant”

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Is this a Used iPhone?

If so, then contact the original seller asking them to sign you out. Either do it in person — don’t share credentials over the phone (i.e. Apple ID and Password).

When you meet, have the original owner go here: What to do Before you Sell, Give Away, or Trade in your iPhone, iPad, or, iPod Touch

Did you forget your password? If yes,

See If you forgot your Apple ID password https://support.apple.com/en-us/HT201487

You also can use Having trouble signing in/iForgot https://iforgot.apple.com/password/verify/appleid 

And you will need to see If you forgot the answers to your Apple ID security questions https://support.apple.com/en-us/HT201485

Before trying to answer your security questions is very important that you think about your questions, including your birth date, and their answers carefully and try to recall all details you can. If you don't answer them correctly enough, then you easily can lose control of your account.

Note that If you're using two-factor authentication and can’t recover your password, you usually will need to enter account recovery. See Recover your Apple ID when you can’t reset your password  https://support.apple.com/en-us/HT204921.

What happens when you try? Error message(s)? More information would help.