Capitalize with Capital I’s
Capitalize your I’s.
Every time you use the word I, as in the singular first person subject pronoun, the word needs to be capitalized. If you’re contracting the word I with am, have, had, would, etc., I still needs to be capital.
It should also be noted that proper nouns, including the names of products, are usually capitalized. I said usually because Apple makes several products whose names begin with the lower-case i.
When writing the name of your Apple product, even though it is the name of a product (proper noun), and even though the name contains the pronoun I, you are allowed, on these isolated instances, to use a lower-case i.
Example: I’m listening to my iPod.

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