[Samsung Galaxy S 4 Unified Development] Max Frost:
I tested the build last night and posted but then discovered a very odd phenomena that caused me to a double take so I wound up conducting this trial on two devices multiple different ways. The results are quite strange . I've been running CRD version of android 10 on one of two SPH-L720's lately because it does detect simcard and has working telephony and sim card . The other L-720 runs LOS 16 and also works fine. I'm saying this because here's where things really go strange . Here is the outline of how I tested your build.

phone #1 running CRD - Wiped data,system,dalvik,cache. Flashed your build , rebooted .Results - Sim card was detected , telephony worked.

phone # 2 running LOS 16 - Clean wipe like above , Flashed like above , rebooted

Results - No sim card detected . I assumed it must be a fluke so I reapeated the procedure but again , same result , No sim card..

By now I'm saying " what the heck ? " So I have these very strange results that make no sense so I decided to conduct the same test again except reversing phones and setting each one up as they were prior to the test except now phone #1 is running LOS 16 and phone #2 is running CRD , at this point sim card is detected and telephony is again working on both devices. To save time I am not flashing gapps on either device. Every flash was clean like in test 1 abov.

Results outline below .

Phone# 1 running LOS 16 Clean wipe , flashed your test build , rebooted and NO sim card detected .

Phone # 2 running CRD Clean wipe , flashed your build , Sim card was detected .

Conclusion , I can only assume something is being retained from CRD 17 so that even after a clean flash your build does indeed detect a sim card . But flashing from a fully functioning LOS 16 build and wiping the same exact way results in the same old problem of no sim card , no telephony whatsoever. We only know this since last week I ran across this beta build of CRD for this sprint variant otherwise this phenomena would be unknown to us. There results prompted me to take the test one step further.

Test - clean wipe , flash crd with no gapps , reboot , confirmed sim card detected , data and telephony working . Reboot to recovery, clean wipe again , flash LOS 17 official build reboot to see if some of the older official builds would also detect sim card .

They do!! If you flash any of the official builds behind a clean wiped CRD 17 install , everything is fixed and works perfect. There is a broken bridge if you clean flash behind a fully ,perfectly working LOS 16 official build. I have flashed no less that 10 times on both these devices to produce this reply. I have confirmed and re-confirmed them.

It all boils down to this . WHY does it work after CRD 17 but will NOT work on the natural upgrade path of LOS 16 to LOS 17 ? I hope this will somehow get us on the scent and trail of this very unusual problem. I'm including some screen shots where I just flashed the 06/26/2020 official build of LOS 17.1 by N.P. Johnson fully working after flashing it behind a double clean wipe of CRD 17.

The sad kicker to this whole thing is once you power down or reboot the LOS 17.1 your right back where you started . No sim card detected . :(

All I can tell you is CRD is fully working and survives updates , power downs and reboots. It's a true puzzle ....