5g problem

[ritiii]

Why in my S21 fe 5g Got automatically turn off and Signal goes to LTE then is have to close sim and open then 5g come .... this happen more offen when any new system update come...

Please tell me how to solve that

[yadavmanish]

It's due to phone's heat, if your phone get warm then it will always be shifted to 4g so try to use your phone in ac room

[Tech-CA]

Factory data reset will fix this issue!
My working stable now

[WajeMahesh]

Don't update evey security update.

[goodthings]

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 also interchange Sim in slots also 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.

[RameshS21Fe]

I am facing similar issue after one UI update

[cs_member10]

Dear Samsung member,

Greetings from Samsung customer support.

As per your query, kindly follow the easy troubleshooting steps which might help to solve the issue.

Note: kindly contact your network service provider once to make sure there is no issue from their end.

Check device network in open area
Check device network mode settings
Please follow the steps: Navigate to apps screen and tap on Settings>> Tap on Connections>> Tap on Mobile networks>> Tap on network mode SIM1 or SIM2>> Select network mode
Note: We recommend to set device network mode as 5G/LTE/3G/2G (auto connect) mode.

Check network operator settings
Kindly set device network operator as "Automatically".
Please follow the steps: Navigate to apps screen and tap on Settings>> Tap on Connections>> Tap on Mobile networks>> Tap on Network operators>> Select automatically>>
Note: We recommend to set device network operators as automatically.
Tap on OK>>Registered on network.

Check SIM cards
Kindly do check same SIM card in another phone or another SIM card in same phone to verify the issue.

Update device software (If Software update available): https://www.samsung.com/in/support/mobile-devices/samsung-galaxy-smartphone-how-to-update-software/

Reset the device: https://www.samsung.com/in/support/mobile-devices/samsung-galaxy-mobile-how-to-perform-a-factory-res...

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