Very strange indeed. Can you borrow another SIM and try that?I'm still using this "old version" on my daily driver and was very happy until yesterday. I ran into some calling issues and can't figure out why... i was talking to my dad on the phone, when i lost connection, after a few minutes i got back my cellular network but could not call back. Since yesterday i tried rebooting the phone, drained the battery completely empty, reset the APN's, cleared the cash of the calling app and removed the SD card. Nothing worked for me. i have 3 identical S7, all running los 16.0 and if i switch the SIM-card it is the same problem on all three phones, BUT if i put the SIM-Card in an old Iphone or an android phone without los (A7) it works perfectly fine.
The strangest thing: the phone worked fine for over 1 year without any problems, mobil data and text messaged also working fine. Any idea? I don't want to reset the phone or switch to a "newer" los version if possible