How to solve 'Invalid MMI Code' Error

Hi @Invisible_Speck,

thanks for your message and welcome in our English community.

I regret, but the code you used is not quite correct.

At the moment your mailbox turns on after 15 seconds. You have the possibility to enlarge the time to 20,25 or 30 seconds. If you like, I can change that for you.

If you like to do it yourself, please use the following code:

**61*+49176 33 your phone number without prefix*11*20/25 or 30#

I hope I could help you with this information.

Loving greetings,

Tobias

I tried the new code still ending up with the same error, it would be great if you change that for me.

Thanks

Hi @Invisible_Speck,

oh, I am very sorry that the code does not function properly at the moment.

Okay, I will change that for you. After how many seconds should the mailbox turn on? You have the choice between 20, 25 or 30 seconds.

Just let me know.

Loving greetings,

Tobias

I would like to change it for 30 seconds, forgot to add that information.

Thanks.