There is an SMS version of AIM that i used to use. The IMs come in as SMS so it's not like the AIM app. This definitely works with VZW; not sure about T-Mobile
To use the SMS Version of AIM:
1. Type a text message with your screen name space password
2. Send the text to 4646 (that is the short code to log in)
When you get am IM it will arrive on your phone as a text message. With the SMS version you will hear your normal text message sound every time you get a text. You can send, reply to IMs using SMS.
Tip: Once signed in send a blank text to 4653 to receive all the AIM TXT short codes!
