Where do I find my tv brand to connect to my phone?
i will like to connect my iPhone to my sharp smart tv
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You apparently already know your TV brand - Sharp. So, your question is a bit confusing.
Start by reviewing the article you linked here from:
Use AirPlay to stream video or mirror the screen of your iPhone, iPad, or iPod touch - Apple Support
Also, review your TV's owner's manual (can usually be found on the manufacturer's website).
Then, if you're having problems, let us know specifically what they are.