Delete groups on LG phone without deleting individual contacts

To edit a contact

1. On Start, tap People .
2. Flick to All, find and tap the contact you want to edit, then tap Edit .
3. If this is a linked contact (a contact with multiple accounts that show up as one contact card), tap the account you want to edit (for example, tap Edit Windows Live).
4. Do one of the following:

Creating, editing or deleting a contact ' Windows Phone ...

www.windowsphone.com/.../create-edit-or-delete-a-contact Windows Phone
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how do I simply delete/edit a contact? - Android Phones - Android ...

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go to settings in your contacts and see if it is displaying both sim and phone contacts. if so unselect one and it may fix your problem.

While "Speed Dialing" or "Speed Dial" is listed in its fax specifications on some sites, it appears to be a mislabeled categorization of its group fax feature as HP's manual makes no other mention of it--save to say, the "fax to multiple numbers" (or multiple recipients) feature. There does not appear to be a speed dial list, but there is a phone book feature for adding contacts (individual numbers) & groups. (The following is detailed in a more explanatory way on pages 65-66 of the user's manual (http://support.hp.com/us-en/product/HP-Officejet-5740-e-All-in-One-Printer-series/6617253/model/6617254/manuals?cc=us&lang=en).

1. From the printer control display, touch Fax.
2. Touch Send Now.
3. Touch the telephone symbol to access its phone book feature.
4. Touch the person symbol for a phone book contact; or touch the multiple person symbol for a group of phone book contacts.
(Note: Contacts should be established before any of these could be added to any group.)
5. Touch + (plus sign) to add a contact/group; or touch the gear symbol (edit) to edit/delete a contact/group.
6. Touch Name.
7. Changes to contacts/groups:
•Adding a contact/group: type the name, & then touch Done.
••Adding a fax number to a contact: Touch Fax Number, enter this contact's fax number, & touch "Create".
••Adding a contact to a group: Touch Number of Members, select all of the contacts to add to this group from this printer's phone book, & touch Select followed by touching "Create".

•Editing: Select the contact/group name, & then touch Done. Then...
••Editing a Contact: touch Fax Number, enter the fax number, & touch Done.
••Editing a Group: touch Number of Members & deselect the contacts to remove from this group or touch + (plus sign) to add contacts to this group. Then touch Done.

•Deleting a contact/group: Select the name, & then touch Delete followed by touching Yes.

Yes that is correct, you can only do one at a time.

You have to go to your messages then go to option mark/unmark and click mark all then go back to options and hit delete.

The default security code is set to ?0000? and the
security code is required to delete all phone entries and to restore the handset to factory setting.

In your contact lis, touch the icon to the left of the contact name which will place a check mark there.
At the bottom right of your screen next to "GO TO" touch the option menu icon (looks like a piece of lined paper).
"Erase" is the first option.

You can delete multiple contacts at once by selecting more than one contact before you open the options menu.
A similar procedure is use to delete contact groups.

This stumped me for a while too. The manual is ****! You have to go to your inbox, select Options, select 6 - mark/unmark. It asks you if you want to mark individually or mark all. Then hit Options and you can delete whatever you marked.

Address Book
Contact List
There are two ways to enter Contact List.
1. Tap the [ ] in the idle screen then tap Address Book - Contact List.
2. Tap the [ ] key in the idle screen.
This menu allows you to save and manage contact address information. The
Contacts’ functions allow you to add a new address or search saved contact
addresses by name.
New Contact
This menu allows you to add a new contact address. You can enter contact
address information including name, phone numbers, email addresses, group
information items, memos, ring tones, and image (photograph).
Favorites
This menu allows you to have your own favorite contact list. You can add and
delete it.
Caller Groups
This menu allows you to manage group information. By default, there are 4
groups: family, friends, colleagues and school. You can also configure a ring
tone for a group so that the group ring tone sounds when a call from a specific
contact address within that group arrives and there is no ring tone configured
for the specific contact address.

Goto Contacts -> Groups

Click on the icon to the left of the group name a check mark will appear.
At the bottom, right of the screen the options menu icon will appear.
Click on options and either erase the group or rename it.

This can be done with new and default groups.

ONLY 10 MEMBERS IN A GROUP!

Good luck.