Prakhar Khanna/ZDNETI’ve been rooting for tri-fold phones since I used the Huawei Mate XT Ultimate. I found that device to be more useful than a book-style foldable. Now, here comes the Tecno Phantom Ultimate 2, which is a similar tri-fold foldable. However, unlike the Huawei phone, the Tecno Phantom Ultimate 2 isn’t available to buy. The phone was launched as a concept in August 2024 and Tecno is showcasing a working prototype at Mobile World Congress. While the phone is expected to be launched in the future, I got limited hands-on time with the tri-fold at the event — and was impressed. Also: I tested Huawei’s $3,600 tri-foldable, and it made me question why tablets still existThe Tecno Phantom Ultimate 2 is 11mm thick, slimmer than the Huawei Mate XT’s 12.8mm-thick design. When folded to single-screen mode, Tecno’s device is closer to the Galaxy Z Fold 6 form factor than the Oppo Find N5 or Huawei’s tri-fold design. The Tecno tri-fold concept can go from a folded 6.48-inch outer screen size to a 10-inch display. The device has an LTPO OLED screen with a 1,620 x 2,880 pixel resolution. The hinges felt quite strong and held the screen where I wanted it to be. Tecno expects the device to last for up to 300,000 folds. The company also says it developed a battery as thin as 0.25mm to fit inside the device. More