Google Voice disappoints. Any alternatives?

[Nancy Roth]

I need to establish an independent business number on my iPhone with a separate voicemail system on which I can leave a business-related message for callers. I want friends and family to hear a more personal greeting on the other line.

I thought Google Voice would give me a separate phone number/voicemail facility, as many of my investor colleagues use it happily. But I'm disappointed to report that, for Sprint subscribers, at least, this is not an option.

GV either lets Sprint users to have EITHER your Sprint number OR a Google Voice number for all calls made to your phone. PLUS it allows for only one message to go to all callers. Below I'm pasting in GV's instructions for Sprint users. Obviously neither arrangement is satisfactory for business use--in fact, both completely defeat the purpose of having a separate number.

"Sprint users can now seamlessly integrate Google Voice on their mobile phone.

"Option 1: Replace your Google Voice number with your Sprint number.
Calls made from Google Voice and Gmail will display your Sprint number. Your Google Voice number will remain on your account for 90 days.

"Option 2: Replace your Sprint number with your Google Voice number. Calls made from your Sprint handset will display your Google Voice number.

"Both options will replace your Sprint voicemail with Google voicemail. Any voicemail messages currently on your Sprint phone will be deleted. International calls from your Sprint handset will be placed through Google Voice."

Has anyone with a Sprint phone, particularly an iPhone (mine is 4S, FWIW), found an app they particularly like that will give me access to two separate operating phone lines?

Forgive me if I've asked a question that has been discussed before. I did check the forums for this specific issue with Sprint and GV, but the resources are vast here, I may well have missed something. If so, I'd welcome a link to it.

Thanks,
Nancy Roth