Zte Axon 7 User Manual page 15

2. Place the nano-SIM/microSDHC card on the tray with the
gold-colored contacts facing down. Carefully slide the tray
back into place.
nano-SIM 1 (right)
and 2 (left)
nano-SIM 1 (right)
and microSDHC (left)
NOTE: When two nano-SIM cards are installed, pay attention
to these restrictions.

If one nano-SIM card connects to 4G LTE, the other
card can only connect to 3G or 2G networks.

You can use either card for mobile data service. For
more information about how to switch the card the
phone uses for mobile data service, see
the nano-SIM

If one card is connected to a phone call, the other
card is unreachable.
or
Cardson.
15
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