This is because the SIM card does not hold any data other than the credentials to log on to the carrier's cellular network. If your Phone Number is being changed, then you may lose your voicemails unless your carrier agrees to transfer them to your phone number.
To save voicemails on most Android phones: Open your Voicemail app. Tap, or tap and hold the message you want to save. In the menu that appears, tap the one that says “save”, “export” or “archive.”
The fact that voicemails are typically stored on your carrier's server and not your phone itself is why you have to set up your voicemail again when you switch carriers or get a new phone, and why you're likely to lose them in the process unless they're backed up.
If your device is backed up in iCloud, your voicemails should transfer over. We would suggest going into your iCloud settings and making sure that you have Voicemail selected as one of the things you're backing up.
They won't expire, so you will find that voicemails you don't intentionally or accidentally delete remain in the Voicemail tab of the Phone app indefinitely.
Open Apps and Data and click on Restore from iCloud Backup. Sign in to your iCloud with your Apple ID. Click Choose Backup and find the version with your deleted voicemail. Click on the voicemail to restore it.
How long does a saved voicemail stay on your phone?
Saving your Voicemail Messages to Another Device
While you have the option to save your voicemail messages in your voicemail mailbox, they are normally deleted after 7 days (unless you continuously re-save the message).
If your phone has a separate voice mail app, open that instead. Find the voice mail you want to preserve and tap it. Tap the share icon, which looks like three dots connected by two lines. Send a copy of the recording via email, Google Drive — whatever you prefer.
How do I transfer my voicemail from my old iPhone to my new phone?
How to Transfer Voicemails from iPhone to iPhone
Go to Control Center to turn on Wi-Fi, Bluetooth and AriDrop.
On the old iPhone: go to Phone app > tap Voicemail > select the voicemail you want to transfer > tap the Share button > tap the name of your new iPhone.
Many reasons can lead to the deletion of your voicemail, some of which are: Accidental deletion of voicemail. System upgrade failure. Device is damaged.
Download and Share Voicemails Right From the Phone App
The easiest way to save iPhone voicemails is to open up the voicemail itself and tap the iOS Share button. You can then save the voicemail to your iCloud Drive or email it to yourself.
As mentioned earlier, basic voicemail is stored at the server on Android smartphone. The voicemail comes with an expiration date which may differ from provider to provider. Users can use Visual Voicemail app to download and save any voicemail they have to the phone.
Summary: Voicemails are an easier and simpler way to summarise lengthy texts. However, a voicemail expires after 30 days and is erased automatically unless you save it after receiving it. So if you forgot to save it or deleted it accidentally, then don't worry as we have got you covered.
Most Android phones come with a visual voicemail app that will allow you to save voicemails for future use, but if yours doesn't, there are plenty of third-party apps that you can download to help you.
