[random123]

Your code isn't going to work you need to make a player array or else when 1 player uses the command EVERYONES phone will turn off.

PHP код:

new bool:PhoneOn[MAX_PLAYERS];//we will use a bool here since it is more efficient to do so when possible
PhoneOn[playerid] = true; //put this in OnPlayerConnect so their phone is on when they spawn
    CMD:poweron(playerid,params[])
    {
        if(PlayerInfo[playerid][Cell]<=1)return SendClientMessage(playerid, COLOR_GREY, "You don't own a cellphone.");
        if(PhoneOn[playerid] == true)
       {
           SendClientMessage(playerid,COLOR_GREY,"You have shut off your phone");
           PhoneOn[playerid] = false;
       }
       else
       {
             SendClientMessage(playerid,COLOR_GREY,"Your phone is now on");
             PhoneOn[playerid] = true;
       }
       return 1;
 } 


Let me know if you need help making this work with your /call and /text cmds