Akash Pal on X: "Reports suggest that the Galaxy S21 and S21+ will not support expandable storage. S21 Ultra will reportedly be the only model with a microSD card slot.Each Galaxy model
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Per Samsung Galaxy S21 adattatore per vassoio Ultra SIM custodia per telefono originale supporto per vassoio per scheda Micro SD - AliExpress
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Recensione SAMSUNG GALAXY S21 ULTRA – Andrea Galeazzi
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Does the Samsung Galaxy S21 have a microSD slot? | Android Central
Galaxy S21 Ultra is the only one coming with a microSD slot