ok then make it:
`def open_cell_and_data_settings(self, dsds_sim=None):`
Then for single SIM phones you call it with:
`open_cell_and_data_settings()`  this is important not to break existing tests.

For multiple SIMs you call it with:
`open_cell_and_data_settings(dsds_sim=2)` for example

so there are 3 options, None, dsds_sim=1 and dsds_sim=2.

or dsds_sim=12 when we release the 12 SIM cards phone!