Follow ZDNET: Add us as a preferred source on Google. Tecno is always a delightful visit during MWC, the brand has a history of bringing interesting concepts to bear. This year, there are a pair of them, including a tri-fold phone I couldn't dive into, as a security device prevented me from even closing it on the showroom floor. This concept is different from the Z-shaped foldable phone it showed last year. Instead, it folds twice to the center, like the Samsung Trifold, with the outside screen on one of the wings. But the other concept was the one that caught my attention: a magnetic modular phone. Also: What to expect at MWC 2026: Best phones I'm anticipating from Xiaomi, Honor, and more Modular phones are seemingly the dream among phone enthusiasts. Who wouldn't want to build their own phone? This phone starts off with a little bit of an iPhone Air vibe to it. It's extremely thin and it has magnets and pogo pins on the back to attach the modules.…