How can my friend who uses Messenger Tigo send me messages to my cellphone?
He/she has to add your Tigo cellphone number to his/her contact list. Once he/she did this, you’ll receive a SMS message with an authorization request. Reply OK to this message and you both will be connected through Messenger Tigo . (Your friend will not be able to send you any message from Messenger Tigo to your cellphone until you authorize him/her). Once authorized, your friend will be able to send you messages which you’ll receive as SMS messages.