My guess is that they have flex cables (and not so much ribbons) and tape. Other electronic devices - including modern ones - that I've taken apart lately inclu

My guess is that they have flex cables (and not so much ribbons) and tape. Other electronic devices - including modern ones - that I've taken apart lately include quite a lot of both. There are three flexes in just this one iFixit photo of one side of a Switch Lite: https://d3nevzfk7ii3be.cloudfront.net/igi/sbTwHYTEZOaWX3IQ.full https://d3nevzfk7ii3be.cloudfront.net/igi/sbTwHYTEZOaWX3IQ.f... Tape takes a number of forms. Holding down flexes to manage pull-out forces is pretty common. You can do that with traditional single-sided tape if you have the space on something to adhere it, but increasingly common is a double-sided tape on the flex itself. You peel off a liner and stick it down. It wouldn't surprise me if there are liner-less heat-activated tapes too, but I don't know of them myself. That's outside my domain.