Contact Backup : Contact Sync

Contact Backup : Contact Sync is best app to take contact backup and transfer to other device.
Find Or Search Number Location helps you to search and track mobile phone number, STD code and ISD code with offline also, it will display the location of caller with service provider with city, state information on all contacts.
Know SIM Number Registration Location and Service Provider
-- Key FEATURES --
* Phone Contact Backup
Take backup of all contact and sync or transfer to another iPhone device.
* Phone Contact List
Full phone contact list with carrier detail and from where to purchase the SIM.
Mobile Number Locator to find from which State/Telecom operator and Mobile number belongs to.
All location information is grouped and shown at State/City level only based on area code.
* Worldwide area code and country code
Phone Number Tracker has a powerful database of thousands of area information in the world. We provide 12,982 cities areas codes for subscriber trunk dialing (STD) and 249 countries codes for international subscriber dialing (ISD). You can easily search and look-up almost all the city codes, with detailed location info.