Greetings all;

Just got my N900 and set just about every thing up. The only problem I have is receiving sms messages from my sons phones. I can send a sms message to myself using the N900 or T-Mobile's web page. I get a yellow band across the screen stating that the senders sms message has failed. So I guess the text gets to the phone and for some reason fails. There are two settings I can choose from. Use phone number from the SIM or type a number in. I have tried both.
Is there anything I am over looking? Any help would really be appreciated.

i get that occasionally when the other person has low signal but most of the time message still gets delivered