My messages haven’t transferred to my new iPhone ?

Hi Nick_d88,

​Thank you for using the Apple Support Communities. Having all of your data on your new device is certainly important. We understand you're not seeing your messages, and you've checked out a resource About missing information after you restore your iPhone, iPad, or iPod touch with iCloud Backup already. We're happy to assist.

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"About your Messages and Voice Memos data

With Messages in iCloud and Voice Memos in iCloud, your text messages and voice recordings automatically upload to iCloud. They aren’t included in your backup. After you restore your device from iCloud Backup, stay connected to Wi-Fi so that your text messages and voice recordings can download.

If you turn off Messages in iCloud, your text messages and attachments no longer upload automatically, but they save in your next iCloud Backup and download in the background when you restore. Stay connected to Wi-Fi until the process finishes. The time it takes to restore depends on the size of your backup and the speed of your Wi-Fi.

Sometimes, if you restore a device from a backup of another kind of device, your Messages and Voice Memos won’t restore. For example, if you use an iPad backup to restore an iPhone, your Messages and Voice Memos may not appear on the iPhone.

If your information is still missing after you restore, you can try to restore from a different backup in iCloud or on your computer. Always back up your current data on your computer before you try to restore from iCloud Backup."

Were you using Messages in iCloud on your other device? If so, you may just need to tap Settings > [name] > iCloud and turn on Messages on the new phone. Be sure to keep your device connected to Wi-fi while it syncs.

Take care.