Samsung has employed silicon carbon batteries for the Z Fold 8 and Z Fold 8 Ultra. I Want Privacy Display: My favorite feature from the Galaxy S26 Ultra did not make its way to the new Galaxy Z Fold 8 or Galaxy Z Fold 8 Ultra. One of the other major differentiations between Z Fold 8 and Z Fold 8 Ultra is the price. If both the Z Fold 8 and Z Fold 8 Ultra had matching specs and price tags, Z Fold 8 would be the more popular one. Galaxy Z Fold 8 is lightweight, packed with features, provides an immersive viewing experience, and is fun to use.