使用联通SIM卡会不断重启，信息如下：
[2019-06-04 12:14:01.521]
UART Boot Completed
[2019-06-04 12:14:04.130]
RDY
[2019-06-04 12:14:06.411]
89860118801282724617
^SIMST: 0
[2019-06-04 12:14:06.754]
+CPIN: READY
^SIMST: 1
[2019-06-04 12:14:07.004]
+MSTK: 11, D074010301250002028182050F80005500530049004D53615E9475280F0A01807CBE54C163A883500F0A02806C83901A884C8BC10F0C0380624B673A84254E1A53850F0804806C8353C280030F0A0580727960E0793C53050F0806806C8377E597F30F0807806C8373AF74030F0808806C835A314E50
[2019-06-04 12:14:07.332]
+MSTK: 14
+CPIN: READY
^SIMST: 1
[2019-06-04 12:14:10.597]
SMS READY
[2019-06-04 12:14:10.800]
+CGEV: ME DETACH
[2019-06-04 12:14:16.096]
[2019-06-04 12:14:26.484]
UART Boot Completed
[2019-06-04 12:14:29.093]
RDY
[2019-06-04 12:14:31.389]
89860118801282724617
^SIMST: 0
[2019-06-04 12:14:31.733]
+CPIN: READY
^SIMST: 1
[2019-06-04 12:14:31.983]
+MSTK: 11, D074010301250002028182050F80005500530049004D53615E9475280F0A01807CBE54C163A883500F0A02806C83901A884C8BC10F0C0380624B673A84254E1A53850F0804806C8353C280030F0A0580727960E0793C53050F0806806C8377E597F30F0807806C8373AF74030F0808806C835A314E50
[2019-06-04 12:14:32.279]
+MSTK: 14
+CPIN: READY
^SIMST: 1
[2019-06-04 12:14:35.513]
SMS READY
[2019-06-04 12:14:35.716]
+CGEV: ME DETACH
[2019-06-04 12:14:40.824]
[2019-06-04 12:14:51.212]
UART Boot Completed
[2019-06-04 12:14:53.821]
RDY