If on an iPhone, the full box site is pretty crappy to navigate (really Box? there's this thing called responsive design.).Unfortunately it doesn't appear the mobile box site that loads allows setting up 2FA, but there is an option/link for 'full box.com site' - tap that.Because the Box app isn't installed you end on a screen that wants you to download the app, but a little below that is a link to 'mobile box.com'.Next load the box.com site in Safari, find the 'Login' in the menu.First you have to delete the Box app, when you attempt to login in Safari it wants to open the Box app if installed - again the app has no 2FA setup options.On an iPhone or iPad the Box app's 'security' options have nothing to do with the account security (come on Box). You can setup 2FA on an iPhone or iPad, but Box has made it ridiculously painful to accomplish: Box's 2FA appears limited to SMS if you're on a Mac platform. Yeap, still doesn't work 5 months later (MacOS 12.6.3, MBP i9) - same little loader animation where the QR and manual setup code should appear.