To transfer contacts from iPhone to iPhone, using iCloud is the easiest method. Ensure both iPhones are signed in with the same Apple ID/Apple Account. On both phones, open Settings > tap your name > ...

Google Contacts lets you transfer contacts between Android smartphones by syncing them with your Google account. Alternatively, you can share contacts using VCF files. This article covers these ...

Can someone please tell me how to, if there is a way, to transfer ALL contacts to my Sim card at one time. I have switched phones and when I put my SIM card in the new phone, i have no contacts.