S21FE network issues

What problem you're facing?

I am not able to get proper bandwidth in same area where my previous phone was delivering good one

Yes

My dear 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 without any Sim in slots restart your's device one time and also interchange Sim in slots. Thanks.

Dear Samsung member,

Greetings from Samsung customer support.

Kindly follow the easy troubleshooting steps which might help to solve the issue.

Check device network in open area
Advice customer to check his/her device in a different location/network coverage area.

Check device network mode settings
Please follow the below steps.
Note: Steps and Images may vary according to OS.
Step1: Navigate to apps screen and tap on Settings.
Step2: Tap on Connections.
Step3: Tap on Mobile networks.
Step4: Tap on network mode SIM1 or SIM2.
Step5: 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 below steps.
Step1: Navigate to apps screen and tap on Settings.
Step2: Tap on Connections.
Step3: Tap on Mobile networks.
Step4: Tap on Network operators.
Step5: Select automatically.
Note: We recommend to set device network operators as automatically.
Step6: Tap on OK.
Step7: 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-reset/

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