The best of what we've seen at Mobile World Congress

Engadget is on the ground at Mobile World Congress in Barcelona, so we've prepared a list of the very best of what we've seen thus far from world's biggest mobile technology conference.

• Hands-on with the Galaxy S9 and S9+
• Hands-on with the Sony XZ2 and XZ2 Compact
• VIVO made a "concept phone?"
• Nokia's retro 8110 Reloaded has been updated to support 4G
• Huawei's Matebook X Pro hides the webcam in a very peculiar spot

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