Nokia 7230, you can receive SMS now, but you can't send SMS. Unicom's information center number is +86 130 10240500. How to fill in the name of the information center?

I just solved this problem. Download a software called "SMS removal" first, and set the local center number "+86 13 * * * * * 500" in the advanced settings of the software (if you don't know, you can search online or call directly,+can't be omitted). Secondly, you enter the dialing interface, enter * # * # 4636 # * *, and then enter "mobile phone information". There is a blank box in SMSC. Please fill in the local center number "+8613 * * * * * 500" again (you can search online or dial directly if you don't know), and don't leave it in the blank box. Then, this program must not be mistaken. Press the Update button first, and then press the Refresh button. At this time, don't worry about what is in the refreshed box. Even "error refresh" is no problem. Do not move. The screen will stop here and turn it off directly. After the restart, you will find that it is ok to send a message with GO SMS! ! I hope it works for you ~