RECORDING to SD SOLVED !
All my SD cards (9 of them) were not able to record.
I purchased a 5 pack of these SD micro cards on Amazon
And all my cameras record and play back a timeline ! PHEW !
I feel like I need to update my terrible Amazon and Google play reviews of YiHome cam now.
FOLKS !!! SPEND $6 and get your SD cards and BAM ! Problem SOLVED !
PS - Don’t use the KAMI app, it won’t allow for SD playback !
PS 2 - The new new home 1080 cam looks way better and sharper than the previous generation (2-3 years old)