Webhow to turn facetime off and on in settings. How to reset network settings. How to hard reboot your iphone or ipad. Weba weak or slow connection is often the cause of failed facetime calls. Webverify your facetime contact information. Sign out and back in. Webif your call failed, toggle airplane mode off and on, restart your iphone, and check your list of blocked numbers. Then, remove and reinsert your sim card and reset. Restart your iphone and check for new software updates to fix your facetime issues. A facetime activation error may mean that. Check if data usage is enabled and force restart your iphone. For cellular data, check that. Webhow to fix facetime problems. Facetime is apple’s app for making free video phone calls but sometimes facetime doesn't work! Here's how to check if.