YOU CAN CHECK YOUR MIG ACCOUNT BALANCE WITHOUT LOGGING IN TO MIG
JUST SEND A TEXT MESSAGE TO "+447717989963" CONTAINING "balance"
THIS IS NOT FREE IT WILL COST YOU THE CHARGE OF SENDING INTERNATIONAL MESSAGE
AND IT WILL SHOW THE BALANCE OF THE ID FROM WHICH YOU SEND THE MESAGE...
source...http://dxcommunity.phpbbstar.com/check-your-mig-balance-without-logging-in-vt130.html