vivo released the V11 in Inda back in September and it's now stepping out of the country as vivo Z3i in China. Essentially, the V11 (also know as V11i and the Z3i are the same but there are some small details that set those two apart. We've got the same MediaTek Helio P60 chipset on board but instead of offering two memory options, the Chinese have a limited choice - 6GB of RAM and 128GB of storage. Just for the record, the V11i came with either 4GB/128GB or 6GB/64GB. The screen features the same waterdrop notch design, 6.3-inch IPS panel, and 1080 x 2280 pixels...
Source: https://www.gsmarena.com/vivo_z3i_is_a_rebranded_v11i_in_china-news-33693.php