I have a Nokia 3.1 and my contacts keep disappearing. I have to login to my google account and restore them as they are all gone from there to. I have to restore items from upto a month before and my contacts come back in my google account and back on my phone. So something is deleting them on both, I only use my phone for calls and texting. No social media and no apps other than what came with phone. Only thing new is a new software update two weeks ago, which is when this started. I think its a software issue and google needs ro resolve.