Please recommend a cell phone with a big screen that focuses on cost-effectiveness

Please recommend a smartphone with a big screen that's more cost-effective~

What I usually do is watch videos on YouTube or write simple internet or kakaotalk.

Phone and text messages are calls, so of course I use them.

Is there a product that you can recommend for this much use   cell phone with a large screen that focuses on cost-effectiveness?

1415 2017-08-01 Gentleman

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