Facebook, LinkedIn and Whatsapp allow you to sync your phone’s address book with their servers to bring your social network contacts in your address book and also to pass them info on your contacts. Now assuming you want to do this, here is some more info on how below.

If you use Windows Live, or Outlook (previously known as Hotmail) then you will probably have lots of contacts saved in your email’s address book. You can sync your Outlook contacts to any device including iPhone and Android devices.

With many of us using social media as the main tool for staying connected with people, having links to your contacts’ social profiles can be very handy. This means when you browse your address book, you’ll be able to look at a contact and quickly access their Facebook, Twitter or LinkedIn account.

If you’re upgrading your iPhone or you want to do a factory reset, it’s pretty straightforward to do a backup and restore contacts on your iPhone address book. There are two simple methods to backup your iPhone contacts using iCloud or iTunes

Having duplicate contacts in Gmail can be annoying, but thankfully Google have made a very handy tool to deduplicate your Gmail contacts.

If you’re making the big step up from a classic Nokia phone to an iPhone you’ll understandably be concerned about losing all your contacts.   There are a few ways to transfer Nokia contacts to iPhone.

As the Windows Phone has pretty much pulled out of the smartphone race, chances are you will, at some stage, want to switch to Android. Transferring your contacts from Windows to Android without a PC is actually pretty easy.  

Keeping your contacts and address book backed up is key to avoiding any headaches. Thankfully, many apps backup information automatically. Windows, Google and iCloud all have the option to auto backup your contacts on a regular basis, saving you hassle if you lose your device or have a major hardware failure.

NFC or near field contact has become a very useful technological asset. Most of us will use NFC with our contactless bank cards or Android/Apple pay or for pre paid travel cards (such as London’s Oyster or Hong Kong’s Octopus). You can also transfer files on Android phones using NFC, including your contacts.

If you’re a Verizon user switching from an older, non smartphone to the 21st century then there are some handy tools to make it easier for you. To transfer all your contacts from your old dumbphone to your new smartphone, you can use the Verizon backup assistant.