Acer Liquid Z6 - Manual (Page 52)

52 - Managing your SIM cards
Identifying calls
Whenever you receive a call, the caller’s number will be shown using
the color defined for the SIM that the call is being received on. You will
also be shown the name of the SIM receiving the call.
In the call log, the name of the SIM will be shown beneath the number
of the call -- whether the call was missed, answered or was an
outgoing call -- in the color you defined for that SIM.
Limitations when using multiple SIMs
When a SIM is: Other SIM cannot:
In a call Dial out
Ringing
Receive a call (caller will get a
"number not available" message)
Sending or receiving a message Send or receive a message
Using a data connection Use a data connection
Note
If you are using data on one SIM and you make or receive a call, or send or
receive a text message on another SIM, the first SIM’s data connection will
be temporarily halted.