Lenovo A2107A - Manual (Page 3)

To turn off your IdeaTab, press and hold this button for about 1 second,
then select OK in the Power off pop-up window to shut down your
IdeaTab.
Should it be necessary, press and hold this button for about 6 seconds to
force shutdown.
Volume Controls
Press the Volume Up or Down button to adjust the volume.
SIM Card Slot
Two SIM card slots are located on the top of the IdeaTab. Turn off the
IdeaTab, insert the SIM card. To remove the SIM card while turned off, pull
the card out of the SIM card slot gently.
The following table describes the service your IdeaTab provides after
inserting the SIM card(s).
SIM1 slot SIM2 slot Service
- 2G SIM card 2G in SIM2 slot
2G SIM card - 2G in SIM1 slot
- 3G SIM card 3G in SIM2 slot
2G SIM card 2G SIM card 2G in SIM1 slot and 2G in SIM2 slot
2G SIM card 3G SIM card 2G in SIM1 slot and 3G in SIM2 slot
3G SIM card 2G SIM card 3G in SIM1 slot and 2G in SIM2 slot
3G SIM card 3G SIM card
If the SIM card last used for 3G service before
shutting down is still in the product
The SIM card last used for 3G continues to
provide 3G service. The other SIM card
provides 2G service.
3G SIM card 3G SIM card
If the SIM card last used for 3G service before
shutting down is not in the product
3G in SIM1 slot and 2G in SIM2 slot.
NOTE: There is no 2G network service provider in Japan. In Japan (or other
regions with no 2G network service), results for 2G in the above table should
be read as ‘no service’.
1-3 Turning On/Off Your IdeaTab
Turning On Your IdeaTab
Press and hold the Power button on your IdeaTab for about 4 seconds, then
release it. The Lenovo logo and the startup screen will appear in sequence,
indicating your IdeaTab has been turned on.