What to do if the mmi code is wrong on android?

What to do if the mmi code is wrong on android?

how to reset the mmi code (ussd) htc or samsung

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Answers (3)

Answer 1
October, 2020

If this error occurs, then go to the settings. On some phones there is a forced operator code to be added to the dialed number . Uncheck the box and everything will work.

In most cases, for example, after a firmware update, this option is enabled. And it turns out, for example, for Belarus: you type a USSD request * 100 # and the result is + 375 * 100 #

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Answer 2
October, 2020

Everything is much simpler. You need to go to "Settings", then in the "Application Settings" section, select "System applications", then select the "Calls" item, then look for the "Location" section and go there. And there we are looking for the item "Add country code. Automatically add country code before calling ”, uncheck the box next to it, i.e. turn off. And that's it, the problem is solved.

Answer 3
October, 2020

If this error occurs for the first time, then the simplest thing you can do is turn off the network. Go to the notification panel and turn on Airplane mode for at least 5 seconds. Then turn it off. If the error persists, then try to completely restart your smartphone. If the error still occurs, I advise you to contact the service center.

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