S20 5g NTT Docomo Japanese version

[absar993]

Bought S20 5g NTT Docomo Japanese version with One UI 5.1 Android 13 in Nov 2024 but unable to use 5g , airtel and jio both tried but not working, 4g is running smoothly on both the Sim but 5g isn't 

Any solution , please help me out in this

[Wodehouse]

This s20 is designed for Japanese 5G bands which are 3.7 GHz band (n77, n78), the 4.5 GHz band (n79), and the 28 GHz band (n257)
while Jio and Airtel use n28, n78, and n258 and 1800, 2100, 2300 MHz respectively. Now you know why it does not work.

If this reply answered your query please mark my reply as "resolved" by clicking 3 vertical dots on top right of my reply. Thank you 😊

[absar993]

Any other solution root or custom rom or software update

[Wodehouse]

Rooting is a risky adventure. Rooting can change your band. 5G bands are hard-coded into phone's firmware. Rooting requires technical skills. Fiddling with kernel can brick the phone. Proceed with great caution. Samsung do not advice meddling with firmware. Do at your own risk.

If this reply answered your query please mark my reply as "resolved" by clicking 3 vertical dots on top right of my reply. Thank you 😊

[absar993]

Just provide me a solution that how can I use 5g services, I am open to accept any solution at this point

[absar993]

Airtel supports n78 band in india and n77 band also..do some research and let me know how can i use 5g

[samsungsupportt]

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[UserAdik]

Understanding the Issue:
It seems you've encountered a 5G connectivity issue with your Samsung Galaxy S20 5G (NTT Docomo Japanese version) on Airtel and Jio networks in India. While 4G works fine, 5G is not activating.
Possible Solutions:
* Carrier Compatibility:
* Check for 5G Support: Ensure that your specific model (NTT Docomo Japanese version) is officially supported by Airtel and Jio for 5G services. Some carrier-specific models might have limitations.
* Network Settings: Verify that your phone's network settings are configured correctly. Go to Settings -> Connections -> Mobile Networks and ensure that 5G is enabled.
* Software Update:
* Latest Firmware: Check for the latest software update for your phone. Sometimes, updates address compatibility issues and improve network performance. Go to Settings -> Software Update and check for updates.
* SIM Card:
* 5G SIM: Make sure you're using a 5G SIM card that's compatible with your phone and network. Contact your carrier to confirm.
* Network Coverage:
* 5G Availability: Check if 5G services are available in your area. 5G coverage is still being rolled out, so there might be limitations in certain areas.
* Manual Network Selection:
* Network Mode: Try manually selecting the network mode to 5G. Go to Settings -> Connections -> Mobile Networks -> Network Mode and select 5G.
* APN Settings:
* Access Point Name: In some cases, incorrect APN settings can cause connectivity issues. Contact your carrier to get the correct APN settings for 5G.
* Reset Network Settings:
* Network Reset: As a last resort, you can try resetting your network settings. Go to Settings -> System -> Reset Options -> Reset Wi-Fi, Mobile & Bluetooth. This will reset your network settings to default.
If the above solutions don't work, consider these additional steps:
* Contact Carrier Support: Reach out to Airtel or Jio customer support for specific assistance and troubleshooting.
* Visit a Samsung Service Center: If the issue persists, you can visit an authorized Samsung service center for further diagnosis and repair.
Remember to provide the specific details of your phone's model number and the network you're using to get the most accurate assistance.
Let me know if you have any other questions.

Asked Source: Google Gemini AI.

[absar993]

Well thanks for the brief information, I have tried all above mentioned but nothing worked, any other solution you have that will help me to use 5g services in India..

[UserAdik]

Just take your device to Samsung and converted to Indian operating system compatible you might need to take a backup of everything so you can transfer it in your new operating system and if that is not enough then you can try asking them to change some 5G components as well because in Japan and India it is different for 5G.