There's more specific information in the main info page[1], but the answer is yes: "In 2012, the Wikimedia Foundation signed Wikipedia Zero partnerships with th

There's more specific information in the main info page[1], but the answer is yes: "In 2012, the Wikimedia Foundation signed Wikipedia Zero partnerships with three mobile operators [...]. In January of 2013, we signed a fourth partnership [...]" (from TFA). [1]: https://www.mediawiki.org/wiki/Wikipedia_Zero https://www.mediawiki.org/wiki/Wikipedia_Zero