Facing network issue on my s21 plus

[sk51]

Some times network disappear and alaway have slow speed in network connection 

[uma9876]

Ya iam also facing same issue

[cs_member10]

Dear Samsung Member,

Greetings from Samsung Customer Support!

As per your concern kindly visit this mentioned link to resolve your Galaxy device network issue: https://www.samsung.com/in/support/mobile-devices/samsung-galaxy-smartphone-how-to-optimise-network-...
Note: kindly contact your network service provider once to make sure there is no issue from their end.

How to use 5g in Galaxy device: https://www.samsung.com/in/support/mobile-devices/how-to-use-5g-on-your-galaxy-phone/

In case the issue still occurs, please visit the service center for a physical inspection of your device. You can locate your nearest service center with this given link: https://www.samsung.com/in/support/service-center/

Warm Regards,
Samsung Customer Support