The trademark "TEXT TO BUY" is descriptive and non distinctive trademark. It is descriptive for an obvious reason: it exactly describes the service it is a trademark for. It is a service "to buy" and it works by texting something.
Moreover, it is non distinctive as well. Even in 2003, people already bought things (ringtones for instance) by texting a message.
This trademark is registered as a European trademark.
So how to register such a trademark that is descriptive and non distinctive? The OHIM website is unclear about how to do this. It just says that for registration it should not be descriptive and needs to be distinctive.
That is not the question. Trademarks such as "TEXT TO BUY" can be registered and are registred. It is not clear how to do that since the possibilities to register a trademark are only described for distinctive and non descriptive trademarks.