trayNetwork Novice4 years agowhat does code mean “Connection problem or invalid MMI code” What causes this message and what does it mean. Presently phone show it’s dialing and it never rings the number.
ghostlee13LTE Learner4 years agohttps://www.gizbot.com/how-to/tips-tricks/5-ways-fix-connection-problem-or-invalid-mmi-code-error-with-ussd-035723.html
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