I've been searching for an answer to this problem ever since i installed miui to my htc sensation. what happens is i will send a text to someone and if i am recieving a text from someone else at the same time, the text im sending will automatically fail ans change colors with the option to resend. but then the message recived window pops up and it sends! so why does this happen? it's such a small but most definite annoying problem when texting. i was thinking maybe a radio problem? i have the 11.24A.3504.31_M with the latest 2.9.21 but even with all miui roms i still have the same problem, and it only started occurring when i switched from stock to miui. Thanks in advance, i just really wanna fix this problem!