How do I set my cellphone/Speakout so that my calls will show 'unkown caller' when calls are made?

Forgive me if this is in the FAQ, I didn't see it there.

TIA

iamdrumming said:

I believe you punch in #31#, then the number. I know on landlines it's *67. I think I tried *67 on my SpeakOut phone, and there was a recording to punch in #31# next time.

OK thanks.
So you can't set it permanently?
How about programming your numbers with the #31# before the numbers?
I'll try it now, but I think my old phone (the one I'm using now) will only allow 10 or 11 digit numbers.

iamdrumming said:

I'm not sure if there is a permanent solution. You might call SpeakOut customer service and ask. I'm not aware that they could or would do that.

I called and they told me that it's possible to set your phone to block your ID by going: menu/settings/call settings/send my caller id/no

With my 4 year old phone it just allows me to do that on a per call basis, not permanently. I suppose the newer phones allow for a yes/no setting.

Using an iPhone the setting is found in Settings/Phone/Show My Caller ID. I assume that your phone only sends out your phone number and not your name like a landline would? It seems like its up to the receiving phone to match the number to a name in the address book, if that record exists? So, if you get a call from someone that isn't a contact, all that will show is the number right?