Samsung GS3 frontier watch. I have no text message app on my new smart watch. and thus can not receive text messages.

SOURCE: can't receive an picture message an i can't send a text message

You'll have to call your service provider. The SIM card stores a phone number for the network's text message center. For some reason, this phone has a glitch where it deletes the center number. Your service provider might be able to update it remotely but I had to take the SIM out and place it in an older phone so I could enter the text message center number manually. This fixed the problem.

Hope this helps

SOURCE: samsung j600 tone received when text message sent

go to menu > messages > settings > text messages and uncheck delivery report. good luck.

SOURCE: broken messages samsung x640

i have a similar problem on my samsung x640. but with mms. they tried everything at optus and finally put my sim in another phone and the mms worked. so they are saying it is a software problem and that it needs to be sent away to be fixed..... at a cost of $90!!!! they told me to just get a new phone. GRRRR.

SOURCE: cant recieve text messages on lg neon

i hate my lg neon sooo much    its been 2 months and it doesnt work and it fell apart and i havnt told anyone    i had to snap it to gether but it is so fragille and wobballly

SOURCE: my samsung corby s3653 cant receive text messages

if this happened from the beginning after purchasing your phone, it would help you if you bring it back to your phone dealer mostly if it's still under warranty.  but if this issue just comes up now, and you didn't encounter this issue before, it is a network provider problem.  however, since you are the phone owner, you may want to restore it to its factory settings and check,  here is the code for it but let me remind you that you will lose all your settings once you decided to hard reset it. so you need to back up your files first once you decide to restore it.  1.  switch off phone 2.  remove battery, sim and sd card 3.  reinsert battery and switch the phone on 4.  on your keypad, type the code *2767*3855# 5.  after successful hard reset, reinsert everything again,  6.  try sending a txt message to your own number and observe. 
take care.