John1123
Active Level 3
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Galaxy M

After new update dual Sim 4g is not working properly. One of the Sim network keeps changing from 4g to 2g (Airtel). It works fine with one Sim turned off but as soon soon as I turn on both the Sim in 4G mode one of the them start converting to 2G mode automatically even. I am using Samsung m21. If anyone else facing the same problem in M21 please raise a complaint to Samsung and support this post so that Samsung can provide some update.

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John1123
Active Level 3
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Galaxy M
This is a temporary solution after few minutes it again starts switching to 2G.
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John1123
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Galaxy M
Yeah doing this from the last few days.
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John1123
Active Level 3
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Galaxy M
I felt like cheated after buying M21. My Mi phone was way better than this **bleep**.
John1123
Active Level 3
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Galaxy M
Never ever gonna buy Samsung device.
John1123
Active Level 3
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Galaxy M
Even factory reset didn't worked for me.
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John1123
Active Level 3
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Galaxy M
?
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Samsung_Support1
Moderator
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Galaxy M

Dear Samsung Member,

Greetings from Samsung Customer Support!

To resolve your device network issue please visit this link: https://www.samsung.com/in/support/mobile-devices/samsung-mobile-network-issues/#:~:text=1%20Check%2....

For further assistance, register your concern in Samsung Members Application (Open Samsung Members Application > Get help > Send Feedback > Error report/Ask questions).

Thank you for writing to Samsung.

Warm Regards,
Samsung Customer Support

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