Do I need a verification code to log in to someone else's mobile phone Battle.net?

See if he has set it. If he sets it, he must have a verification code.

Battle.net is a game battle platform established by Blizzard. Fight. Net is a way to connect directly to the Internet, which enables players from all over the world to explore and travel with each other. Game platforms such as HF and VS can play against people online. Fight. Net plays the role of contacting all kinds of gamers and providing a competitive platform. It has played an indispensable role in the promotion of major competitive games.

Battle.net China, a new account system used by Netease when acting as an agent for World of Warcraft, allows players to log in to World of Warcraft with the original account after registering Battle.net account, and Battle.net account is common for all regional servers. For example, if you type a card on your Battle.net number, you can use it anywhere in World of Warcraft.