Unable to send SMS, Everything else is fine.

Yesterday, mid conversation my SGS decided it wouldn't send any of my sms messages. Receiving sms messages is no problem and calls work fine both ways; MMS Messages also send with no issue. Data connections are fine, I've been receiving data through both edge and 3G. The only issue is that i can not send sms messages no matter what the length.

I was running Darky's ROM v9.2 but as an attempt to fix it i reflashed (wipe) to Darky's ROM v9.3, it did not fix the issue. I've tried sending them from different locations, flicking airplane mode on and off.

I've tried using both the stock Android messaging app and Handcent SMS App.

Does anyone have any insight on what is causing this, it's rather annoying and searching has been fruitless, i can't find anyone else who has even had this issue.

Thanks in advance, Tom.

Thanks for the speedy reply!

My SMCS number was set to 00, I tried entering the correct number (+447785016005) and pressing update but it likes to reset to 00.

Again thanks in advance, Tom.  

EDIT: Fix it, i changed the SMCS number in the settings of the messaging app and seems to have stuck. Thanks a lot for the help, especially how fast you were!

I'll be sticking around!

Cheers, Tom. 

HI I HAVE THE SAME PROBLEM ON MY SAMSUNG GALAXY MINI. I HAVE TRIED TO ENTER *#*#4636#*#* AND REFRESHED SMSC NUMBER IT COMES WITH 07F8501600000000 NUMBER ON SCREEN. I TRIED TO CHANGE IT, BUT FAILED. SOMEBODY WROTE THAT YOU CAN CHANGE IT INSIDE MESSAGE SETTING BUT ITS LOCKED IN MY PHONE, THAT SETTING LOOKS GREY AND YOU CANT ENTER OR CHANGE IT. MAYBE YOU KNOW HOW TO UNLOCK IT THAT I COULD CHANGE MESSAGE CENTER NUMBER? THANKS

Dear Peace,

I had galaxy A form Korea.
My phone also met the same problem, as can't send sms. During sending it appeared: "invalid sender". Actually, I try with the following instruction:

1. go into the Dialer and dial *#*#4636#*#*   100%-ok

2. It will bring a menu Select Phone.  100%-ok

3. Then Scroll down to SMCS.  100%-ok

3. Press refresh does i show the number? my phone show as
This is your SMS Service Center Code. Check with your provider if it's correct.
Luckily: after referent my phone showed.
SMS service center is: +85516800000

After the above 3 steps, there were nothing change with my phone.
So, please direct me how to deal with it.


Honestly, it don't have any other issues.

same here with galaxy ace 2. sometimes it's stuck and don't send SMS, everything is fine but SMS sending. restarting phone solves the problem. for a while. wonder, why it hapens.