Can you use an iPhone as a WiFi hotspot without jail breaking it ? if so how ?

I have done it thru settings on my Android phone so I know that works,

And do any of the carriers care how you use the data you are paying for ?

in the USA they want you to pay extra if you use your phone as a Hotspot

I have both phones and actually like the Nexus 4 more but need to use the iPhone for a few apps and facetime

thanks for your help....

On iPhone, click on Settings then on Personal Hotspot. Instructions on that screen will tell you what to do.

Sent from my iPhone using Thaivisa Connect Thailand mobile app

No.

While it is true that in some countries, some (but not all - this is more dependent on the actual data plan) operators charge extra for tethering/Mobile hot-spot - usually via a flat-fee for this "feature", but here in Thailand there is no extra fee, and operators do not care how you utilize your data quota.

Note that we do not pay for incoming calls or SMSes here in Thailand, as we do in the U.S. (calling party pays, and so does the called party).