So I'm planning on buying a samsung s6 https://www.amazon.com/Samsung-SM-G920V-Smartphone-Certified-Refurbished/dp/B01D0JV7AO/ref=sr_1_1?ie=UTF8&qid=1511118919&sr=8-1&keywords=samsung+galaxy+s6&refinements=p_n_shipping_option-bin%3A3242350011 and it says for verizon and dont really know what that means I don't live in the us so will I be able to use 4g wifi in my country and put in a sim card from my country