I will use my current carrier for my cellular line. I will have to get a second line with my carrier because, of the changes, but this will not be much of an option. The Cell line will use eSIM-1 on my iPhone which will eventually become my 878 number. The reason for moving the numbers around is 878 is the area code for not only Allegheny County, but surrounding counties as well. The larger coverage of 878 makes a good rationale of memory. Keep in mind that the last 7 digits of all of my telephone numbers will be the same. This just makes it easier to remember that 878 is Cell.