Originally Posted by tweak4
While I can't help with PDA Net specifically, I can say that you don't need it to tether. I tether my tablet to my phone all the time just using the built-in "Tethering & Mobile Hotspot" options, and it hasn't asked me for a password once.
The built in app will not work with an unlimited data plan unless you pay a monthly fee for a hotspot option, which has a data cap, I believe. I have always felt that if this is so important to you, it must be worth paying for.