S21Ultra Network (cellular and Wi-Fi) low perforamce

[NVR007]

Hi All,

I am facing slow internet speed on S21 Ultra for cellular and Wi-Fi. Signal reception is not good when compared with oneplus nord as well as old Samsung pbones. What might be the issue? Is it a manufacturing problem? Is it hardware? At the same location oneplus nord is outperforms S21 ultra in both cellular and Wi-Fi. I hope Samsung didn't focus on this issue from ages. Customer care troubleshooting already done. 1) Safe mode 2) Factory data reset etc.

Is there any fix for it? Please suggest.

#S21Ultra Network Issues

[NVR007]

Dear Samsung,

Can you please respond for the above issue?

[Samsung_Support2]

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

[NVR007]

Dear Samsung Support,

All the troubleshooting done and given to service center also. But still network didn't improve. Hope you understood the basic issue with the attached picture. The small with better network speed is Oneplus Nord. Both connected to same (JIO) service provider. Seems to be S21 Ultra network chipset is not a good one. There is huge gap of 20 Mbps download speed and 14 Mbps of upload speed.

[NVR007]

For your information the above picture was taken when it was tested in Samsung service center.

[NVR007]

Dear Samsung,
Please respond to the above issue.

[Samsung_Support2]

Dear Samsung Member,

Greetings from Samsung Customer Support!

We apologize for your inconvenience. We would request you to register your concern in Samsung Members Application. So, that our concern team gets back to you as soon as possible.

Please follow this path to register your concern in Samsung Members Application (Open Samsung Members Application > Get help > Send Feedback > Error report/Ask questions).

Note. please attach the error log file within 15 minutes of the error occurred.

Thank you for writing to Samsung.

Warm Regards,
Samsung Customer Support

[NVR007]

I think Samsung BOT is replying the answer in Samsung members. We are scribbling entire story and attaching pictures and log file. At the end Samsung has only two replies 1) Error report within 15mins.
2) Reach nearest service center.

[Durgeshkapoor]

https://r2.community.samsung.com/t5/Galaxy-S/Signal-reception-on-s21-ultra-is-bad/td-p/10288894

Same issue here do you lose internet completely and only upload sign is shown. Airplane mode on off solves it temporarily. Iam also facing this