How to Enable CA on Galaxy Device

[Superman2025]

I have Samsung Galaxy A15 4G

Model: SM-A155F/DSN

8/128 GB version 

It has Mediatek Helio G99,

which is compatible with 4G CA (Career Aggression) or 4G+ or LTE-A

But unfortunately my device is not getting 4G+ or LTE-A or 4G CA!!

How can I enable CA on this phone through Internal settings or any authentic firm wire??

I'm not ready to unlock bootloader and root the phone.

Please help me 🙏

[Superman2025]

Someone comments on my post, but I'm not seeing any comments below, 😕

what the hell is happening?

[Superman2025]

Please help me, everyone 🙏

[Integrationofmind]

Carrier aggregation is dependent on the network operator, if there is only single frequency band then you won't get carrier aggregation. Which sim you are using.

[Superman2025]

I'm correctly using Robi sim connection, Robi is the 2nd largest MNO in Bangladesh.

I also use the other MNO like Grameenphone, Banglalink, and Teletalk sim connections as well.

Their BTS also has CA support.

All MNO's BTS sites are 4G+ ready. But my device doesn't support it. I think it's disabled by Samsung. I want to enable CA on my device. Please help me 🙏

[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, 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.

[goodthings]

Your's most welcome to here.