To send an instant message to your Skype contact:
If you want to send a photo, just tap the icon in the bottom-left corner of the conversation window, select photo, and choose the photo you wish to send. You send video messages and share your location in the same way. You can also send emoticons in your messages -- just tap the icon and select the emoticon you want (if you don't see the one you want, check our full list). You can turn large emoticons on or off in app settings.
You can send and receive instant messages while you’re on a call. To IM the person you are calling, tap the IM icon to pull up the conversation window. You can maximize your call window again by tapping the arrow .
To IM someone else, tap the minimize icon in your conversation window to view your contacts pane. You can then choose the contact you’d like to IM within your Contact tab or Recent tab and IM them as normal. You can maximize your call window again by tapping the arrow .
If you wish to edit, copy, or delete a message, simply tap and hold on the message and select the option you want from the pop-up. Instant messages can be edited or deleted for up to 60 minutes.
Hide chats from your Recent tab by swiping to the left on the the contact and tapping the Delete icon.
You will have the options to Delete, Hide or Cancel. Choose Hide.
You can also tap Edit in the top left corner of your screen, select the contact, tap Delete in the bottom right of your screen, then from the options, choose Hide. The chat will then be removed from your Recent tab, but the chat conversation is still available. If you wish to remove all the contents of that chat, you’ll need to delete the entire chat history.
There are several ways you can delete your entire chat history. From your Recent tab, swipe left on the contact, tap the Delete icon, then tap Delete from the options menu.
You can also tap Edit in the top left of your screen, tap the conversation, then choose Delete at the bottom right of the screen. Choose Delete from the options menu.
Another option is to delete the entire chat history from within the conversation. Tap the chat header at the top of the screen and in chat options, tap Delete chat.
Learn how you can add particpants to existing chat conversations or send and receive messages within group IM conversations.
You can use basic text markup in chats to use special formatting:
The newest versions of Skype for iOS has push messaging enabled, which means you'll get a notification badge for new messages even if Skype is closed.
If you want to send a photo, just tap the icon in the top right of your screen.