Hi @johnburnet6
Thank you for your request.
You can buy the Half-Fare travelcard 2 months in advance. You may order your Half Fare travelcard online sbb.ch/en/half-fare.
A new purchase with foreign mobile number is not possible. In this cas, you have the following options to purchase your Half Fare travelcard:
=> To order by mail, please send the completed order form sbb.ch/en/half-fare to the address listed on the order form. Payment possible by credit card or invoice
=> At a staffed SBB counter, payment possible by credit card, EC card, PostFinance Card, Reka Checks, cash or invoice.
Please note that orders with payment by invoice must reach our point of sale at least 10 days before the first day of validity of the travelcard.
If you have en Swiss mobile number; As a new customer, you can order your Half Fare travelcard online at sbb.ch/en/half-fare. During the ordering process, an identity check takes place. Please have a valid identification document ready (passport or identity card).
For more information, please contact our Railservice on +41 848 44 66 88 (CHF0.08/min.). If this number does not work, please try +41 51 225 78 00.
I wish you a good afternoon.
Regards
NicolasK