MR3420 3G/4G USB router not tethering with my phone Xiaomi Redmi Note 9 Pro Max with MIUI OS
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My MR3420 router tether with all other smartphones but its not tethering with my Xiaomi Redmi Note 9 Pro Max with MIUI OS. My Redmi tether with computer/laptop over USB without any problem but its not tethering with this router
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Thank you very much for your kind reply.
Could you please send me the following two pictures:
1. A screen-shot of advanced>status page.
2. A screen-shot of advanced>network>internet page.
Have you tried to manually add a 3/4G modem profile under the internet page?
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Hi, I haven't tried adding a manual profile under modem settings because this router works with all other phones without adding any manual profiles. I have tested with my Redmi Note 1, my mom's Realme 5 pro. It works with them directly as I plug the usb cable in phone
then the usb cable LED starts blinking on router
and when I turn on the tethering option in that phone
then that USB LED becomes stable and the Internet works.
But its not the case with my phone Redmi Note 9 Pro Max. With this phone, when I attach it to router via USB cable then that USB LED starts blinking on router but when I turn on the tethering option in phone then the LED turns off, it doesn't get stable like with other phones.
I have included screenshots what you asked. But I don't think this is the router's problem because the router works with other phones and my Note 9 Pro phone's USB tethering works with PC/Laptop but not with this router. So I don't know what to do, because both devices work with other devices but not with each other
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Hi, Thank you very much for the update.
I noticed the WAN interface of 3420 is EWAN_ IPoE, did the 3420 work on the wireless router mode( or wireless router with 3G/4G backup), not 3g/4g router only mode?
And the Redmi Note 9 Pro Max is using a USB-Ethernet converter to connect to the WAN port on the 3420?
Moreover, did other smartphones used the same configuration(EWAN_ IPoE) and same network converter?
If yes, please change the DNS under Advanced>Network>Internet>click the "advanced" button and manually set DNS server to be 8.8.8.8/8.8.4.4
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I used the same router configuration for all smartphones. Router works with other smartphones but not with my Redmi Note 9 Pro Max
And the router works on other modes like the Wireless Router mode. No problem with the router.
And I am not using any USB-Ethernet converter. The Router has a USB port and I connect the smartphones to this USB port. All other smartphones work except my Note 9 Pro.
And I changed DNS to 8.8.8.8/8.8.4.4, it still doesn't work with my Note 9 pro. I don't think this problem is related to DNS.
In Network > Internet page > under 3G/4G Settings, the first option "3G/4G USB Modem" says "unplugged" when nothing is connected to the USB port of router.
When I connect my smartphone to USB port this option says "Detecting..."
and then when I turn on the USB tethering option in my smartphone, this status says "Connected" for other smartphones but it says "unplugged" for my Redmi Note 9 Pro.
Its like this router doesn't want to work with my Redmi Note 9 Pro Max in any case
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Thank you very much for your further explanation.
I would like to forward your case to the senior engineers and please have a check of your email address.
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