RMN Messenger is a FREE messaging app available for Android smartphones. RMN uses your phone's Internet connection (4G/3G/2G/EDGE or Wi-Fi, as available) to let you message and call friends and family. Switch from SMS to RMN to send and receive…RMN Messenger is a FREE messaging app available for Android smartphones. RMN uses your phone's Internet connection (4G/3G/2G/EDGE or Wi-Fi, as available) to let you message and call friends and family. Switch from SMS to RMN to send and receive…