The long SMS is converted to MMS and shows sending. How do I make sure it is sent? I typed a long message and it was converted to a multimedia message. When I press the send button it shows "sending" but never shows "sent". How do I know it has been sent or not?
It hasn't. The status would change if the message went through. Now you'll have to check you MMS settings from Messaging -&gt;menu-&gt; Settings -&gt; Multimedia message settings and your MMS APN from Settings -&gt; Wireless -&gt; Mobile networks -&gt; Access point names (or Settings -&gt; More.. -&gt; Mobile networks -&gt; Access point names in newer versions).

After you have corrected these and verified that your carrier/operator has enabled MMS on your account, the message should be sent. Or you have to long-press it and select Retry.