Work with two phone lines
If your particular SIM card supports it, your phone can have two phone
lines. Your service provider can tell you if your SIM card allows the use of
this feature and give you access to two phone lines.
If you decide to use two phone lines, you can select one of the two lines
for outgoing calls, but you can still answer calls on both lines.
If you use two phone lines, you will be given a voice mailbox number for
each line. You need to save each phone line’s voice mailbox number
separately.
To do this, first select the outgoing line and save its voice mailbox number.
Then, select the other line and save its number.