YES PLEASE!
Please wipe any personal data, images and videos you have on your device.
But BEFORE you do that, please do the following:
Apple Devices:
Please ensure that you "REMOVE" your device from your Apple Account. This means that you have SIGNED OUT from your APPLE ID on iCloud and Find My, on the DEVICE. Please ensure you are removed from any device management software also.
Android / Windows Devices:
Please REMOVE your phone from your Google & FIND MY PHONE accounts BEFORE sending your device to us. Please ensure you are removed from any device management software also.
This is really important, so please make sure you take the time to do this. Failure to do so may make the device £0 Rated.