With any mobile type you can call from on-the-road within Switzerland without internet with the preselect function! You just need the following:
On your peoplefone account Login Functions Preselect save the mobile number, that you will use for this function;
This function is only useful for calling within Switzerland to a foreign country! Please note: should you be travelling abroad, you would pay large roaming costs (preselect number is like a Swiss fixnet number with roaming)!
Most often used numbers can be saved in the contact list of your mobile with the preselect number and a "pause"-sign before the destination number.
You are somewhere on the road in Switzerland and want to reach a friend in Austria.