A microSD slot on your phone means you are able to increase your phone's storage with ease. Galaxy S20, S20+, S20 Ultra, Note10+, S10e, S10, S10+, and Note9 support microSD cards up to 1TB, giving these Galaxy smartphones a combined storage capacity over 1TB.
To insert a microSD card, first eject the SIM tray by using the ejection pin. Insert the pin into the hole on the SIM tray to eject. Then take out the SIM tray, place your microSD card onto the tray, and put it back into the phone.
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*MicroSD card sold separately. Availability may vary depending on country and manufacturer.