To recover lost iPhone data without a backup you can use data recovery software such as Disk Drill. The following steps demonstrate how to use this software tool to get back your lost or deleted iPhone data.
Download and install Disk Drill to your computer.
Connect the iPhone to the machine using a USB cable.
Launch the app and select the iPhone from the list of available disks.
Click the Search for lost data button to scan the iPhone for recoverable data.
Preview the found items and select the ones you want to retrieve.
Click the Recover button to complete the process.