Hello guys, I'm new on here but not with android. Been selling and troubleshooting them since the G1, from T-Mobile. Technology has a mind of its own, I often joke and say it's literally alien technology. ..
Anyhow, my wife has been having the same issue for 2 months.
We have replaced the phone through the warranty 3 times. She had the Nokia lumia. After no improvement we got her into the galaxy S4. Coverage was better and other issues were resolved, except the texting issue.
The common factor is Metro PCS. I have never had this problem and I have had Sprint, tmobile, att, Verizon, boost, simple mobile, straight talk, cricket and virgin Mobile. Never had or heard of this issue until now.
My situation is my wife has tmobile and sends a text to a friend in California who has METRO PCS and a Galaxy s3. The Metro user is the one who receives the text in a foreign text.
The only simple possible solution I can think of is to erase the (1) before the cellphone number. I know I had a customer that could not send picture messages and we added the (1) to the number and it worked... but I don't know how Metro works but I would try to reach the tech support issue IF they have one. .