HMD T21 user guide
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Insert the SIM and memory cards
Insert the cards TA-1596, TA-1599
- Open the SIM card tray: push the tray opener pin into the tray hole and slide the tray out.
- Put a nano-SIM card in slot 1 and either a second SIM or a memory card in slot 2 with the contact areas face down.
- Slide the tray back in.
Use only original nano-SIM cards. Use of incompatible SIM cards may damage the card or the device, and may corrupt data stored on the card.
Both SIM cards are available at the same time when the device is not being used, but while one SIM card is active, for example, making a call, the other may be unavailable.
Insert the memory card TA-1597
- Open the memory card tray: push the tray opener pin into the tray hole and slide the tray out.
- Put the memory card in the memory card slot on the tray with the contact area face down.
- Slide the tray back in.
Use only compatible memory cards approved for use with this device. Incompatible cards may damage both the card and the device and corrupt data stored on the card.
Important: Do not remove the memory card when an app is using it. Doing so may damage the memory card and the device and corrupt data stored on the card.
Tip: Use a fast microSD memory card (up to 512 GB) from a well-known manufacturer.
Note: Pre-installed system software and apps use a significant part of memory space.