Lenovo TAB A7-30 Quick Start Manual page 5

Installing the SIM card & microSD card
You can use cellular services by inserting the SIM card provided by your
carrier services. Install the SIM card and microSD as shown.
Step 1. Open the microSD card slot cover as shown.
Step 2. Place the SIM card into the SIM card slot and the microSD card
into the microSD card slot.
Step 3. Carefully replace the slot cover.
Do not insert or remove the SIM card while your tablet is turned on.
Doing so may permanently damage your SIM card or tablet.
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