IPv4 mobile data connection not possible

[senders]

Many thanks @akikyo!
akikyo had a similar problem and the solution works for this issue as well:

Unable to use mobile data on Sony Xperia 10 III 4.4.0.64

Okay, if anybody facing problem with mobile data. I had to reflash system. But first i checked version of Android in Emma. My version was .70 in the end. 2 updates away from 62.0.A.3.109. I flashed Android with version 62.0.A.3.109, went thru system etc. Then flashed once again Sailfish OS and now works like a charm! (on sim1 slot) @flypig would be nice to precise what version should be in installed before flashing Sailfish - if thats the case.

On this basis, here is the procedure which functioned for me:

• Flash to Android 62.0.A.3.109 with EMMA
• Do not relock the bootloader and do not receive any further Android updates
• Test IPv4 mobile data connection with Telekom DE SIM
• After I was sure it worked with Android as expected, I flashed to SFOS

Now IPv4 mobile data connection with Telekom DE SIM works also perfectly on Xperia 10 III SFOS 4.4.0.64