Sometimes going to settings>general>reset>and reset all settings helps. it doesn't erase media
To find your iMessage phone number, open the Settings app on your iPhone, scroll down, and tap on "Messages." Then, select "Send & Receive." Your iMessage phone number will be displayed at the top of the screen, under "You can be reached by iMessage at." If you don’t see it, ensure that iMessage is enabled.
To send a portable network graphics (PNG) image via iMessage, open the iMessage app, start a new message, tap the camera icon, select the PNG image from your photo library, and then send it to the recipient.
To send a message to a regular phone using iMessage, simply open the Messages app on your Apple device and start a new message. Enter the recipient’s phone number or email address. If the recipient does not have iMessage, your message will be sent as an SMS automatically. Ensure your device has an active internet connection for iMessage to work properly.
Yes. iMessage
If you have iMessage installed you can only iMessage other iDevices that has iMessage installed on them. If someone has an iPad 2 but not with 3G but has an iPhone, then the iMessage will go there iPhone.
iMessage for ios5 or text me which you can buy in the app store
If your iMessage is not working, turn your device all the way off. Turn it back on. Go to settings and then general and then time. Set time to automated time. Again, turn your device all the way off. Turn it back on. Open iMessage, and it should work. If not contact the Apple Store, or look further online.
open iMessage, then right click on its icon at the top menu bar, and choose Preferences.
I think a good answer for the question is prob. 10+
You can download an app like Textfree or, in iOS 5, you can message via iMessage app that comes with the update
u need a mac computer to open the mac app store
Just use your apple accounts for app store.