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Connection problem or invalid MMI code

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Android Question

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I have a Verizon Samsung Galaxy SCH-i565 and it is saying connection problem or invalid mmi code when I try to dial * or # before a number. The phone is unlocked and is being used in Belize. Please help me
 
Your carrier has disabled MMI codes (and probably the ability to block your Caller-ID by prefixing the outgoing number). Ask them if they have any workarounds.
 
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