Why can't I set the number of the SMS center, and always prompt failure?

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! !

SMSC (Short Message Service Center) is responsible for relaying, storing or forwarding short messages between base stations and mobile stations (ME); The protocol from ME to SMSC can send short messages from or to mobile stations, and the protocol name follows GMS 03.40 protocol. ?

GSM mobile phone needs to set SMS service center number.

CDMA mobile phone does not need to set the number of SMS service center.