Address List is contacts app which allow you to Group Operate, Batch Operate,Contacts Search and File manage.
**** Group Operate
Created group,
Deleted group,
One contact in multiple group;
**** Batch Operate
In Edit,press on one contact (A), then long press another contact(B), it will select all the contacts between (the range

A-B),
Group Mail,
Group SMS,
Batch delete contacts,
**** Contacts Manage
New contact,
Edit contacts,
Glide deleting function,
Contacts Search, support name,telephone,email and address,
**** BackUp and Import Contacts
Backup files(vcf) to file explorer(Extension),
Import files(vcf) to Group(ALL Contacts)
**** In-build file explorer
Sorting by file name, create time, file type and file size,
transferring files by wifi and itunes file sharing,
New folder and sub-folder
View, copy, move, delete, rename, email, zip Compression and unzip files/folders,
Open files in other applications,
Select all and cancel all,
Support all orientations, orientation lock
Universal app