Thanks for your list. Very helpful but..
https://bit4coin.net/ doesn't offer this service. The send a voucher by SMS
http://bitby.co/ will start in the future ....
http://sms.btc-sm.com/ is Scam
http://www.bitcoin-services.co.uk/sms-to-bitcoin.php Out of order...
http://btcforsms.com/ only in Poland..

i did found also
http://www.btcpayments.mobi/ send a SMS and still waiting for an reply...maybe not working
http://www.btc4sms.com/ not operating anymore.

Most of the Services like "Buy Bitcoin by SMS" are not working. Why?

The Rules and Regulations of the Phone Biller?