For iPhones
Both iTunes and iCloud can be used by iPhones users to back up their contact list. Information on how to restore them are readily available on the Apple website. However, there are disadvantages. If you get your backups from iTunes, you are not given the flexibility to selectively restore contacts that you need. If you recover via iCloud backup, you would first need to reset all iPhone data and settings. That means deleting all your files before you can even access your contacts.
If you want the easier and safer method, you can download
FoneDog iOS Data Recovery. You can quickly get to your iTunes and iCloud backup files sans the hassle. Read on to know how.
For Android devices
FoneDog Android Data Recovery is the simplest way to get back lost contacts from your Android phone memory, with or without backup. Just download it and take note of a few steps you need to take.
For iPhone, there are 3 ways to recover deleted contacts from iPhone’s memory. Choose which one you think is most applicable to you. But first of all, hit the download button and install FoneDog iOS Data Recovery then connect your iPhone to your computer.
Completed guide:
Recover Deleted Contacts from Phone Memory