Importing a phone to Japan

Hi all,

I've been wondering about this, there was one post before but I only found vague answer on the post.
I have a plan to change my phone to oneplus 5t but it's limited in online marketplace, has anyone ever buying a phone from global marketplace (geekbuying, lazada, amazon, ebay) and send it to your place in japan? Is it legal or illegal? Suppose there would be extra tax or tariff, do you know how much?
Based on the previous post, you will pay it cash on the delivery but i wonder how much because if it's too big (30% or something) then I guess it would fail the purpose.
Any kind of information would help, thank you very much!!
Merry Christmas!

Of course it's legal, Japan is not under a trade embargo.

Typically there is no tariff on electronics, only the 8% consumption tax. If you order from Amazon, they will charge you that at the time of purchase so you have nothing more to do.

trade itself is legal.
but, using unauthorized phone in Japan is illegal. the phones must have 技適マーク.

It might be legal, but you might run into a different issue - the battery. Some stuff I buy with lithium batteries get delivered no problem, but other times I have had orders cancelled from the supplier because they say they cannot send the battery. I receive a nice note along the lines of We are very sorry to inform you that unfortunately we are unable to ship Lithium batteries to your country.

Hi all,

Thank you very much for all of the information, it's been so helpful.. :)
Have a nice day ahead, cheers!