Q: i forgot icloud id

You are in better situation that all of us you are asking for help, cause if you forgot, we never knew what it is.

Try to remember.

that is not helpful

I know, you are very perceptive.

REMEMBER YOUR ID

REMEMBER YOUR PASSWORD

KEEP YOUR PURCHASE INVOICE

FOREVER AND EVER, TILL THE END OF YOUR DEVICE.

IF YOU DON'T,.......

EVEN GOD CAN'T HELP YOU THERE.

go to iforgot.apple.com and pick the option for forgot apple id, follow the instructions, and if necessary afterward, do the forgot password/reset steps...