Transfer contacts from Android to iPhone: 4 ways and a check
How to transfer contacts from Android to iPhone with your Google account, Move to iOS, a VCF file or the SIM card, and how to check nobody was left behind.
ReadTopic
google contacts
Back up Android contacts: Google, Samsung and a VCF file
How to back up Android contacts to Google, to a Samsung account or to a VCF file you keep, what each copy protects, and how to check the backup really works.
ReadRestore contacts from Google: undo changes and trash
How to restore contacts from Google with the Trash and Undo changes, the 30-day limit, what each option really does, and how to keep a second copy next time.
ReadWhy contacts disappear on their own and how to stop it
Contacts deleted from your phone randomly? The usual causes, from removed accounts to sync conflicts and cleaner apps, plus a diagnosis checklist and fixes.
ReadRecover deleted contacts on iPhone and Android: what to try first
Contacts gone? How to recover deleted contacts on iPhone with iCloud.com and on Android with Google Contacts, in the right order, and how to avoid it next time.
Read