Pdu sends text message

& gt Address+Phone

This line of code should send the combination string of ADDR+ phone. Look at the beginning 1 1000D9 1. There seems to be only a phone. I don't know if this is the relationship. I suggest you have a try.

For the calculation method of ADDR, please refer to resources.

output stream . write(" 1 1000d 9 1683 134063687 f 40008000 a5de 54 f 5c 6 1095 feb ff 0 1 "。 getBytes())；