NETWORK ISSUE 🛜

This happens with me too , I'm using the Exynos version.
Network suddenly disappears and after a few minutes it'll be completely fine , if not restart and it's back to normal.

It Is Happening To Many Galaxy S21 FE Users (Both Snapdragon And Exynox).
Please Restart Your Device And Check The Network Setting That Is There Any Problem Showing Or Not.
If It Not Solve Please Complain To Samsung Support Through Samsung Member Or Whatsapp.

Please reset network setting of both Sim one by one and than reset all settings of your's device in general management settings also Flight ✈️ mode on n off one time, restart your's device without any Sim in slots, interchange Sim in slots, turn off power saving mode then try to it's again. If you like please accept as a solution it's help to others users also, click on 3dots in my reply section and click on accept solution. Thanks.

Dear Samsung Member,

Greetings from Samsung Customer Support!

As per your query, we would request you to kindly visit the given links to resolve your issue.

Network optimization: https://www.samsung.com/in/support/mobile-devices/samsung-galaxy-smartphone-how-to-optimise-network-connectivity/

5G not working on your 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