Need a Local second phone number for my iPhone, Dual Sim?

Essentially, you're buying a second line that you can access through a single phone, so it costs what an second line would cost.  (It is worth noting that the cost for each line when you have two is cheaper than when you only have one, so that two lines isn't double what one costs.)

Another alternative would be a VOIP service with an app that runs on your phone.  You'd just have to be intentional about noticing when a call comes in, how it is coming in, and using the app to call out with your business number (vs. the built-in phone app).

You are buying a second line, and are charged on that basis.  Whether both lines are physically in one phone or in two different phones doesn’t matter.

These... ⬆️⬆️⬆️

The cost of a second line depends on which plan you are on. The Mobile Share value plan would only cost you another $15 to add an additional line the advantage plan  only $20. 

On the current plans a second line would cost you quite a bit more. One line on starter is 65 , Two lines on starter or $60 each for a total of $120.  Not a bargain. 

So options... 

If you want a local number, on the cheap, don't get post paid. You can purchase a a prepaid line for $300 for a full year, Or $30 for a monthly plan. 

Both of these options include data, but they are a lot cheaper than a postpaid line on current plans. 

If your phone is unlocked you can also use an mvno which may offer a phone number for even less.

And a virtual number is a nearly free option.  You may have to acquire a number through the service provider and pay the activation fee and then you can Port it to Google Voice for a one-time $20 charge. You can continue to use the Google Voice number for free. 

@JefferMC

This was all set up for him to come back and post the usual spam 😒

I'm going to start doing Reddit searches before I answer ANYTHING:

https://www.reddit.com/r/ATT/comments/10lg33f/need_a_local_second_phone_number_for_my_iphone/