How can I make an iPhone SE

Saurab, I don't understand your question. Do you want to buy all the parts and assemble an iPhone SE 2020 from scratch? While that might be a somewhat interesting project, it won't be cost-effective; you'll end up paying far more for all the separate parts than you would just buying a working phone.

A better choice would be to buy a phone that's being sold for parts and replace or repair parts as needed until you have what you want.

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