I recently got a new phone, and since I had to share the previous one with my mother due to financial difficulties, I was transferring my accounts from the old phone. However, it turned out that she was storing all of her contacts on my Gmail account rather than her own.
I removed them all, and when I put my old phone’s account back, all I had were contacts from more than three years ago.
Tell me how I can resolve this, and if you require any other information.
They should be at contacts if she was genuinely saving them to your account rather than locally. You are prompted to select the account under which to save a contact, as well as whether you want to save it to your phone, SIM card, or Google Contacts. If you configure it to always save to one of those, it will never ask to use the phone, cloud, or SIM card again.
The only thing you can do in that situation is try to piece together each person’s identity by going through their text and call histories. Additionally, confirm that your new phone is configured to save contacts to Google rather than on the phone. Once “do not ask this again” is selected, I am not sure how to adjust the phone’s settings and it presumably changes depending on the phone. In the unlikely event that you ever lose access to your Google account, it might not be a bad idea to print off all of your contacts from the Google Contacts page and store them in a file cabinet. Likewise for her. When accessing the location from a computer, a print button can be found directly above each contact.