HTC Desire HD — retrieving contacts after factory reset

I don't think that u will get your contact back after factory reset
1 thing you can do is sign in to google account in new device and sync your contact it will restore your google account contact my advise is to always save contact in google account rather than in device

Actually, it is possible to get your contacts back even after factory reset. You'd better seek help from professional data recovery tool asap. An Android recovery tool, Gihosoft, is highly recommended.

Try Jihosoft Android Phone Recovery. It works for me.

Sync your Google account in new device and hope your contact haven't been remove

Hi,
Well contacts are yet another important part of Android phone and everyone needs contact to get in touch with others. When the contacts are deleted from Android phone then how to recover them is a great challenge. However, if you have backup then its good as nowadays there are several ways where users can store their important data from Android phones without any problem. And when they face such types of data loss situations then backup becomes an easy to restore every data including contacts.

But if no backup is available and you lose your contacts due to factory reset then try using a recovery tool to get back lost contacts from Android phone. The tool can be used for any Android phones and works best in any data loss situation.

If you do not make a backup before resetting your HTC phone, it would be more difficult to get back the lost data. You could use the Android Data Recovery program. It can help you to extract the contacts from formatting Android phone without any hassle.

As far as I know, once factory reset phone, we will lose all data on phone, we can only restore contacts from backup file if we have.