For Seniors: Twitter on Your iPhone 4S
You can use Twitter on you iPhone 4S. Twitter is a social networking service for microblogging, which involves posting very short messages (limited to 140 characters) online so your friends can see what you’re up to. You can go to Twitter to sign up with the service; there is also a free Twitter app for iPhone that you can download and use to manage your Twitter account.
Once you have an account, you can post tweets for all to see, have people follow your tweets, and follow the tweets that other people post.
With iOS 5, the ability to tweet has become integrated into several apps. You can post tweets using the Menu button within Safari, Photos, Camera, YouTube, and Maps. First, sign up for an account, and then download the free Twitter app to your iPhone. Go to iPhone Settings and tap Twitter. Then add your account information.
Now when you’re using Safari, Photos, Camera, YouTube, or Maps, you can choose Tweet from a menu. You’ll see a Tweet form. Just write your message in the form and then tap Send.