Verizon TCL Signa Manual page 6

Step 3. Position the SIM card and/or microSD card in the tray correctly,
aligning the cutout tab and gently snap into place. Be sure the edges are
aligned.
Step 4. Slide the tray slowly into the SIM tray slot. It only fits one direction.
Do not force into place. Keep the SIM tool in a safe place for future use.
NOTE: The microSD card is sold separately.
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