WROOM-02D disconnect problem

[Barecatainmb]

Hello
Until now, we have been used the WROOM-02 module. This module works with all access points without any problems, but now we want to use WROOM-02D. If we use WROOM-02D, this module, when connected to the network via some access points, is repeatedly disconnected from the network and does not reconnect to the network until it is reconfigured with AT commands (but the module is reconnected to the network as soon as it is reconfigured). The same module works with some other access points without any problems. Note that we use a separate processor and AT commands to data communication with the module, and the AT commands to both modules WROOM-02 and WROOM-02D are exactly the same
We have purchased a large number of WROOM-02D modules and have encountered this problem. Please help us in this regard

Best regards

[Her Mary]

Maybe you could have a try with command "AT+RESTORE" to factory reset it first, and then connect it to an access point.

[yangye]

问题简述：wroom-02在smart config的时候出现无法扫描到小米手机或华为手机广播的UDP的包
硬件描述：wroom-02的内核是ESP8266EX，只支持2.4GWiFi下配网，不支持5G配网，也就是说不支持802.11ac的协议
问题详述：路由器是TP-LINK AC1900,开启2.4GWiFi；手机是小米8，连接上路由器的网络，然后通过ESP—TOUCH开启配网；同时WROOM－０２模组已经开启智能配网模式，但是WROOM模组并没有收到手机发送的UDP的广播，导致配网失败。但是有些其他的路由器，也是小米8的手机就能成功配网。

目前不是很懂是什么原因导致的配网失败。

[Her Mary]

May be you can have a try with ESP-Touch V2? It should have better compatibility than the old one.