Part 1
Backup iPhone Contacts with DearMob iPhone Manager
For whatever purpose you need the contacts backup for, choosing a software to backup iPhone without iTunes that transfer with no data lost should be your top concern – Compared to iTunes, which only export iPhone backups in the format .bak, DearMob's iPhone Photo Manager renders in it some more accessible formats – VCF/PDF/TXT/HTML so that you can either directly use the contacts else – aka for Gmail contact, or copy & paste the data into a table in an alphabetic manner.
For your convenience, DearMob's iPhone Photo Manager with iPhone contacts export & import function is your second-to-none choice – as the one of the top 6 tools to sync iPhone contacts, you can use it both to export iPhone contacts and import contacts to iPhone – both without data loss – that been said, how to backup iPhone contacts to computer? Follow the steps below to complete.

iPhone Contacts Backup Steps:
Step 1: Let's assume you have successfully installed DearMob's iPhone Manager to PC/Mac which can help you backup iPhone to computer, if this if your first time connecting an iPhone to the product to backup iPhone contacts, remember to first unlock the iPhone, enter your password to it & tap "Trust this computer".
Tips and Notes:
Kindly be noted that this tier-one tool to backup iPhone contacts in PDF VCF HTML won't recognize the contacts files on your computer if iCloud is turned on, which might to an extent cause conflictions.
Step 2: Now DearMob iPhone Manager can recognize your iPhone & all the contacts therein (English names first, then come names in other languages).
To check all contacts & export, click on the "check all" icon above the first "A-start" contact;
To manually choose the contacts you want to export, also press "Ctrl" on your keyboard while mouse-click the contacts you'd like to export.
Step 3: Click on "Export" button. By the time you have finished iPhone contacts backup, the default output folder will immediately stand out (usually C:> Users:> My Documents:> DearMob iPhone Manager: > Contact), however, if you plan to change the output folder, kindly visit Settings > to assign another output folder for the contacts output.
Tips and Notes:There are 4 applicable format to delivery your iPhone contacts backup into:
Output as separate files: Choose backup iPhone contacts as VCF or PDF files and you'll get the contacts info as separate files.
Output as one file: Choose backup iPhone contacts as HMTL or TXT, and you get all data as one file.
Choosing which format to put your contacts into depends on the specific purpose that you use the files for.
You can use DearMob iPhone Manager not only to backup iPhone contacts, as an all-in-one iPhone data management tool, you may also use this tool to backup iPhone photos, music and more. Let's assume you need to transfer iPhone contacts to new iPhone with this tool, and the next step you should do is to: restore iPhone without iTunes
Pic: Backup iPhone Contacts to Computer