Xiaomi Mix Fold 4 — the next generation foldable phone from the Chinese smartphone brand is expected to go official soon as a successor to last year’s Mix Fold 3. Ahead of any official confirmation, specifications of the upcoming book-style foldable have leaked online. The Xiaomi Mix Fold 4 is tipped to run on Snapdragon 8 Gen 3 SoC. It is said to come with a quad-c…