Motorola application background cannot receive information.

There should be no SIM card information center.

Several different solutions: 1, unable to send or receive any information. Later, it was found that when the mobile phone indicated that the storage space of the mobile phone (not the SD card) was insufficient, the information could not be sent or received. Later, some programs were deleted, which temporarily solved the problem.

2. The number setting of the information center. Upstairs, you have to update the information center number. You press Dial, then enter *#*#4636#*#, select "Mobile Information", there is an SMSC at the bottom, enter your information center number, and click Update. Try again.

3. After the center number is not set, this is my situation. Then you have to try a weird method. I looked for it for a long time before I saw this post. The approximate method is (for example) to enter 138002 10500 in sMSC, click Update, then enter +86 138002 10500, and then click Update, and it will be successful.

The background program can be any program, even a device that completes the corresponding function. So it is not defined that it cannot have special sessions such as MSGBOX. Just because it runs in the background, the front-end users can't touch it, so conversations like MSGBOX are meaningless. And things like MSGBOX may even hinder the normal operation of the program, so it can't achieve the background effect. Although waiting for processing because of an error, the front-end user can't know and interact with it, which violates the rules of running programs in the background. In the meantime, the front-end user doesn't seem to have any abnormal prompts, and even thinks it is in normal operation, so he will wait until the background administrator handles the exception.