Hello,
After being hit by the no data issue on my new Xperia 10iii, i did some experiments and now the phone is connecting ok to the network, with data.
I think the main change is to use the SW binaries for Xperia version v8a instead of the latest, but could not confirm doing only that will fix the issue since i did much more. If someone wants to try on a phone with the issue, just download SW_binaries_for_Xperia_Android_11_4.19_v8a_lena.img on Sony developper websie and flash it in fastboot mode with command: fastboot -s HQ618J3443 flash oem_a ./SW_binaries_for_Xperia_Android_11_4.19_v8a_lena.img
Here is the complete process i did:
Flash with emma to restore to version 62.0. A.3.109 (Android 11)
Check the phone is connecting ok in Android.
Do a factory reset in Android to remove all data/settings
Turn off the phone
Do a wipe data in recovery mode (Vol- + Power to start the phone)
At this point, i assume the phone is in a ‘fresh’ state.
Flash Sailfish with the v8a SW binaries. I had to modify flash-config.sh and md5.lst.
Reboot the phone once install is done.
Make sure both SIMs are enabled (if i disable the non used one, the network connection is lost)
Phone was connecting ok on boot, but after finishing the installation, i flashed again the SW binaries one more time.
From that, phone is working ok, network is connecting ok even after several reboot.
Hope it can help