I am in Germany. Contract with Telekom. Primary physical SIM is inside my Iphone. Secondary eSIM is in my Mudita Kompakt. I turned Imessage off on my Iphone, thinking that that might be the issue. However, every time I try to send SMS from my Mudita it always shows me “Senden fehlgeschlagen”. What to do?
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And are you sending this message to your iPhone?
Have you check your APN settings?
No, I am sending this SMS to another person’s Iphone. I dont know what you mean by APN settings. On my Mudita or my Iphone?
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@maximilian.ott
APN (Access Point Name) settings are the configuration details on your Mudita Kompakt that allow it to connect to a mobile network provider’s cellular data. They act as a gateway, enabling data services, internet access, and MMS messaging by identifying the correct network path for your carrier. Sometimes, they are automatically configured, but sometimes you have to manually set them.
Also- this sim card that is currently in your Mudita Kompakt, was is used in an iPhone before? If so it might not be enough to turn off iMessage, but you will have to DE-REGISTER fully from iMessage and de-register from RCS (which can take a bit- it’s not automatic)
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RCS: Use this website and do the without device portion if you were on Android → https://
RCS iPhone: To turn RCS off, go to Settings > Apps > Messages > RCS Messaging.
iMessage: Official Apple Support imessage/
This will help you tremendously on getting all messages to your Mudita Kompakt if coming from a smartphone.
Note: for some users this is disabled in minutes and they get a confirmation. For others this takes a month or even longer, no idea why.
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Thanks for the reply. So, the APN on my Mudita is activated. This happened already automatically. I deactivated the RCS on my Iphone today, but so far nothing changed. Interestingly, my Mudita lets me send photos that I took with the Mudita. When I try to send simple text messages though, it keeps stating: Senden fehlgeschlagen
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Hi @maximilian.ott,
To my best knowledge, APN settings don’t have anything to do with SMS. That’s for data and MMS. Your SMSes are sent trough a different route. Have you tried a shorter message? Incidentally it happens to me that when my text is too long, sending fails, but the length seems to differ per carrier.
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Yes, the text of the message I tried to send was “Hi”
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Well, that whould be short enough 
And just to double check, you’ve send it to a number capable of receiving SMS texts?
I’ll try to find out where Mudita has hidden the phone number which is solely used. for the SMS gateway. I’ll get back to you shortly.
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