Are the htc one and iphone 5 FULLY works with first gen ford sync?

I have a 2010 focus with the first gen sync system. I'm planning on upgrading to a iphone 5 or htc one. I've heard people have had issues with sync as far as the system reading text msgs and other features. Does anyone know if these phones will work with sync? I know they will make and receive calls stream music via Bluetooth ect. But what about the text features? If not does anyone know any phones that are fully compatible with the system?

Added (1). Sorry about the poor grammar.

The Gen 1 SYNC system does not currently support text messaging with the iPhone 5.

To see which phones work best, check out our compatibility chart:

http://support.ford.com/...ility-sync

If you have any additional questions, contact us at: 800-392-FORD (prompts 1 & 3). We're available Monday through Saturday, 8:30 a.m. - 9 p.m. & Sunday, 10:30 a.m. - 7:30 p.m.

Jaclyn,
In-Vehicle Technology Team