If you have purchased a Cricket s20FE, do not update to Baseband G781USQU3DUCB, their latest OTA update. Your device will begin disabling the backlighting on your screen and begin to flicker when under bright areas (outside) when you have adaptive brightness, or anything higher than 80% brightness enabled outside.
My temporary solution is to disable adaptive brightness and keep it at 60-70%, and hopefully Cricket will release the G781USQU3DUD4 (April 20) OTA update.
I have tested this on 3 devices so far, and even flashed this firmware on an unlocked s20FE.
On a related note, I have noticed Cricket's baseband versions are identical to At&T's. So I am not sure why they are 3 versions behind from At&t, or if you can flash to their firmware.
Is it possible to pop an ATT sim inside the device to get the OTA update?