Lenovo Tab E7 Mode D'emploi page 5

Preparing your device
Use a microSD card (sold separately) for extra storage.
*To access cellular networks with your device (WLAN + 3G version only - model
number Lenovo TB-7104I), insert a Nano-SIM card provided by your carrier into the
slot as shown below.
Only Nano-SIM cards work with your device.
Do not insert or remove the Nano-SIM card while your device is powered on.
Doing so may cause permanent damage to your Nano-SIM
Figure 1: WLAN
Figure 2: WLAN + 3G
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card or device.