CoolSMS aplicación de mensajería es rápido, ligero, con mensajes gratis todos los días.
CoolSMS is fast, lightweight messaging app with free messages everyday.
+ Mobifone: Register an account at www.mobifone.com.vn to get 30 free messages and 5 daily free messages.
+ Viettel: Register an account at www.vietteltelecom.vn and download our ViettelSMSPlugin to get 10 daily free messages.