[OPremium]

You are trying to store the message in an INTEGER variable, declare a string instead

pawn Code:

CMD:sms(playerid, params[]) 
{ 
    if(PlayerInfo[playerid][Phone] == phone_yes) 
    { 
        if(phoneon[playerid] == true) 
        { 
            new text[128]; //<----- 
            new pnumber; 
            if(!sscanf(params, "is[128]", pnumber, text)) //You need to put the string size!
            { 
                foreach(Player, i) 
                { 
                    if(PlayerInfo[i][Phone] == phone_yes) 
                    { 
                        if(PlayerInfo[i][PhoneNumber] == pnumber) 
                        { 
                            if(phoneon[i] == true) 
                               { 
                                new string[128]; 
                                format(string, sizeof(string), "[SMS]%i: %s.", PlayerInfo[playerid][PhoneNumber], text); 
                                SendClientMessage(i, TEAM_RADIO_COLOR, string); 
                                //You can reuse the string here, as you already sent the other message
                                format(string, sizeof(string), "You just sended a text message to %i", pnumber); 
                                SendClientMessage(playerid, TEAM_RADIO_COLOR, string); 
                                PlayerPlaySound(i,1085,0.0,0.0,0.0); 
                                return 1; 
                            } 
                            else return SendClientMessage(playerid, COLOR_GREY, "This player has his/her phone turned off!"); 
                        } 
                        return 1; 
                    } 
                } 
                return 1; 
            } 
            else return SendClientMessage(playerid, COLOR_GREY, "USAGE: /sms [Phone Number] [SMS text]"); 
        } 
        else return SendClientMessage(playerid, COLOR_GREY, "You have your phone turned off!"); 
    } 
    else return SendClientMessage(playerid, COLOR_GREY, "You don't have a phone!"); 
}

EDIT: There is no need of having 2 strings with size 265.... See this: https://sampforum.blast.hk/showthread.php?tid=55261