If you follow smartphone news, you probably know that rollable smartphones are the next big thing, stealing the thunder from foldable phones so to speak.

These devices let you extend the screen size, as part of the display is rolled up in the body of the phone, and can unravel when you want. It’s a futuristic concept, and one no commercially available smartphone has right now, though we’ve seen Oppo, TCL and LG all show off their versions.
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