Why is it difficult to send text messages after changing the SIM card on Samsung 9158 mobile phone?

Dear Samsung users:

According to your description, if your phone cannot send text messages, please try the following:

1. Check the information Center number: Information-Menu key-Settings-Information Center (please contact the local network operator for the information center number).

2. If you can receive text messages normally, it may be a problem with the text message program. You can go to Settings--Application Management--All--Information--Clear Data to see if it can be solved.

3. If you still cannot send text messages, you can try another SIM card.

4. If you still cannot send text messages after the above operations, you can restart your phone and try. If it still doesn't work, you can back up your data and restore factory settings to solve the problem.

If it still doesn’t work after the operation, it is recommended that you take your mobile phone to the nearest Samsung service center for inspection and repair. For the specific location, please click the following link: .samsung.com/support/ServiceLocations.asp

Samsung Enterprise knows that it provides you with high-quality solutions and answers your questions carefully, hoping to get your satisfactory evaluation.