When I look in the hidden menu on my Motion, all I get is "+7"
Hello g0lden. In the Metro PCS support area they advise calling their support line for the answer to queries about SMSC numbers: 1-888-863-8768
Sorry I can't just post the straight answer for you.. but perhaps they're ready for your question (don't laugh... ok, laugh ).
what is msmc
Let me google that for you
Separate names with a comma.