Create Child Apple ID with Gmail as login ID (or any other non iCloud email)
If you want to create an Apple ID for a child under 13 years old you have to do it on your own Apple device in Family Sharing. One disadvantage in doing it this way is that you are forced to create a new @icloud.com email address and use it as an Apple ID / iCloud ID for your child's account. So if your child already has an existing email address he / she won't be able to use it as an Apple. To make things worse, if you created an Apple ID with @icloud.com email address it is no longer possible to change it (you can do it with no issues if you used a third party email address).
Installing LineageOS on Samsung Galaxy S7
I used below instructions to flash LineageOS on a stock Samsung Galaxy S7 (herolte, arm64, exynos 8890). no rooting was required. If you intend to follow these instructions, do this at your own risk - this will surely delete all data on your phone and void manufacturer's warranty. Also, there is always a risk of bricking your device. Proceed at your own risk!
Get rid of Android "SD card encrypted" notification
After rebooting an Android phone that has encrypted SD card, you may get following notification:
SD card encryption
SD card encrypted
Can't encrypt LG G4 (android 6.0) - device reboots but doesn't start encrypting
Cannot enable full phone encryption on LG G4 (Android 6.0). After enabling encryption in Settings > General > Security > Encrypt Phone, the smartphone restarts, but encryption remains disabled.