Voicemail
My iPhone is telling callers my voicemail box is full but when I check my phone it’s completely empty
iPhone 7 Plus, iOS 12
VoiceMail is carrier specific feature. All your VoiceMail messages are stored in carrier's server and that is full. Emptying iPhone will not serve the purpose
Contact the carrier
Or do the following:
- Tap Voicemail, then tap a message.
- Do any of the following:
- Play the message: Tap
.- Messages are saved until you delete them or your carrier erases them.
- Share the message: Tap
.
- Delete the message: Tap Delete.
- Note: In some regions, deleted messages may be permanently erased by your carrier. Your voice messages may also be deleted if you change your SIM card.
To recover a deleted message, tap Deleted Messages, tap the message, then tap Undelete.
Check your voicemail on iPhone - Apple Support
https://support.apple.com/guide/iphone/check-voicemail-iph3c99490e/ios
