At Mobile World Congress today, Facebook announced partnerships with mobile operators to provide free or discounted data access to Facebook messaging for their subscribers.

Through this promotion, free or discounted data access will be available in the coming months on Messenger for Android, Messenger for iOS and Facebook for Every Phone, which is now optimized for chat.

Facebook says that the promotion will be available from more than 18 operators in 14 countries. Operators committed to special pricing for Facebook messaging include TMN in Portugal, Three in Ireland, Airtel and Reliance in India, Vivacom in Bulgaria, Backcell in Azerbaydzhan, Indosat, Smartfren, AXIS and XL Axiata in Indonesia, SMART in Philippines, DiGi in Malaysia, DTAC in Thailand, Viva in Bahrain, STC in Saudi Arabia, Oi in Brazil, Etisalat in Egypt, and Tre in Italy.

Messaging on Facebook lets people connect with friends and contacts on the go, regardless of what device they are using. Facebook messaging and chat can be accessed from more than 6,000 mobile phones via Facebook Messenger, Facebook for iOS and Android, Facebook for Every Phone, m.facebook.com and across other devices with Facebook integration.