I just bought a Fairphone 5 and I am using the Austrian provider SBUDGET, which is based on the provider Magenta.
While I was setting up the phone, I noticed that while calls work, I could send SMS using the Google Messages app but could not receive them.
After 1 hour of searching for fixes, here’s how I did it:
- Open the test menu using the number
*#*#4636#*#*
- Choose “Phone Information”
- Scroll all the way down to “SMSC”
- Press “Refresh”, then “Update”
- Install an alternative App for sending and receiving SMS. I chose the app Textra
- Sending and receiving SMS should work now
If that guide helps just one person with this isue, I am very happy.