腾讯云4G模块连不上网

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bearpi_iot_std

一、描述你遇到的问题

按照Codelabs操作，腾讯云4G模块的几个案例，前一段时间4G模块都正常，今天连不上网，换了3个4G模块都不行，WiFi和NB模块没问题。换了三张手机卡，换运营商也连不上。
请版主验证一下，除了什么问题。

四、开发板串口所有日志

[2026-03-12_20:11:49:157]--->OK
[2026-03-12_20:11:49:157]AT CMD:
[2026-03-12_20:11:49:157]AT+QIACT=1

[2026-03-12_20:11:49:242]--->OK
[2026-03-12_20:11:49:242]Init ec600s ok
[2026-03-12_20:11:49:242]AT CMD:
[2026-03-12_20:11:49:242]AT+QIDNSGIP=1,"VIOT7WPPAM.iotcloud.tencentdevices.com"

[2026-03-12_20:11:49:242]--->OK
[2026-03-12_20:11:49:425]--->+QIURC: "dnsgip",
[2026-03-12_20:11:49:425]--->,2,10

[2026-03-12_20:11:49:425]--->+QIURC: "dnsgip",
[2026-03-12_20:11:49:516]--->+QIURC: "dnsgip",
[2026-03-12_20:11:49:516]GOT IP: 173.207.245.221
[2026-03-12_20:11:49:516]AT CMD:
[2026-03-12_20:11:49:516]AT+QISTATE=1,0

[2026-03-12_20:11:49:516]--->OK
[2026-03-12_20:11:49:516]AT CMD:
[2026-03-12_20:11:49:516]AT+QIOPEN=1,0,"TCP","173.207.245.221",1883,0,1

[2026-03-12_20:11:49:516]--->OK
[2026-03-12_20:11:53:519]establish socket 0 on module fail

[2026-03-12_20:11:53:519]mqtt connect error is 0xfffffffc
[2026-03-12_20:11:53:519]mqtt subscribe error is 0xfffffff2
[2026-03-12_20:11:53:519]MPU6050 ID = 104

[2026-03-12_20:11:53:700]mqtt publish error is 0xfffffff2
[2026-03-12_20:12:18:041]--->+QIOPEN: 0,566
以上是串口报文，请帮我看一下是什么原因，谢谢

gloview1
2 Answers

[2026-03-16_10:42:37:746]Welcome to TencentOS tiny(2.5.2)

[2026-03-16_10:42:37:746]Init ec600s ...
[2026-03-16_10:42:37:746]AT CMD:
[2026-03-16_10:42:37:746]AT
今天又试了，还是不行

[2026-03-16_10:42:38:733]AT CMD:
[2026-03-16_10:42:38:733]AT

[2026-03-16_10:42:39:552]--->RDY

[2026-03-16_10:42:39:793]AT CMD:
[2026-03-16_10:42:39:793]AT

[2026-03-16_10:42:39:793]--->AT

[2026-03-16_10:42:39:793]--->OK
[2026-03-16_10:42:39:793]AT CMD:
[2026-03-16_10:42:39:793]ATE0

[2026-03-16_10:42:39:793]--->ATE0

[2026-03-16_10:42:39:793]--->OK
[2026-03-16_10:42:39:793]AT CMD:
[2026-03-16_10:42:39:793]AT+CPIN?

[2026-03-16_10:42:39:793]--->+CME ERROR
[2026-03-16_10:42:39:793]--->: 14

[2026-03-16_10:42:41:846]AT CMD:
[2026-03-16_10:42:41:846]AT+CPIN?

[2026-03-16_10:42:41:846]--->+CPIN: READY

[2026-03-16_10:42:41:846]--->OK
[2026-03-16_10:42:41:846]AT CMD:
[2026-03-16_10:42:41:846]AT+CSQ

[2026-03-16_10:42:41:846]--->+CSQ: 99,99

[2026-03-16_10:42:41:846]--->OK
[2026-03-16_10:42:43:850]AT CMD:
[2026-03-16_10:42:43:850]AT+CSQ

[2026-03-16_10:42:44:012]--->+CSQ: 29,99

[2026-03-16_10:42:44:012]--->OK
[2026-03-16_10:42:44:012]AT CMD:
[2026-03-16_10:42:44:012]AT+CREG?

[2026-03-16_10:42:44:012]--->+CREG: 0,1

[2026-03-16_10:42:44:012]--->OK
[2026-03-16_10:42:44:012]AT CMD:
[2026-03-16_10:42:44:012]AT+CGREG?

[2026-03-16_10:42:44:012]--->+CGREG: 0,1

[2026-03-16_10:42:44:012]--->OK
[2026-03-16_10:42:44:012]AT CMD:
[2026-03-16_10:42:44:012]AT+QIDEACT=1

[2026-03-16_10:42:44:012]--->OK
[2026-03-16_10:42:44:012]AT CMD:
[2026-03-16_10:42:44:012]AT+QICSGP=1,1,"CMNET"

[2026-03-16_10:42:44:012]--->OK
[2026-03-16_10:42:44:012]AT CMD:
[2026-03-16_10:42:44:012]AT+QIACT=1

[2026-03-16_10:42:44:012]--->OK
[2026-03-16_10:42:44:012]Init ec600s ok
[2026-03-16_10:42:44:077]AT CMD:
[2026-03-16_10:42:44:077]AT+QIDNSGIP=1,"MH2Q4FT4V8.iotcloud.tencentdevices.com"

[2026-03-16_10:42:44:077]--->OK
[2026-03-16_10:42:44:168]--->+QIURC: "dnsgip",
[2026-03-16_10:42:44:168]--->,2,10

[2026-03-16_10:42:44:168]--->+QIURC: "dnsgip",
[2026-03-16_10:42:44:261]--->+QIURC: "dnsgip",
[2026-03-16_10:42:44:261]GOT IP: 23.10.18.16
[2026-03-16_10:42:44:261]AT CMD:
[2026-03-16_10:42:44:261]AT+QISTATE=1,0

[2026-03-16_10:42:44:261]--->OK
[2026-03-16_10:42:44:261]AT CMD:
[2026-03-16_10:42:44:261]AT+QIOPEN=1,0,"TCP","23.10.18.16",1883,0,1

[2026-03-16_10:42:44:261]--->OK
[2026-03-16_10:42:48:269]establish socket 0 on module fail

[2026-03-16_10:42:48:269]mqtt connect error is 0xfffffffc
[2026-03-16_10:42:48:269]mqtt subscribe error is 0xfffffff2
[2026-03-16_10:42:48:586]mqtt publish error is 0xfffffff2
[2026-03-16_10:43:12:795]--->+QIOPEN: 0,566

gloview1

从日志上看目前联网还是正常的

laowang251