Slow Wifi problem on Note 10 +

[aayushkhajuria]

I recently upgraded to a new broadband connection with 50 mbps plan. But since then i started noticing that max speed that i could get on my note 10+ was 30-35 mbps. First i thought it is my router because devices connected with lan get full 50 mbps. But then i tested other old mobile phones at my home like s8 and a8 2018 they both get 45-50 mbps everytime. Then when i googled the problem i came to several others also face the same problem and some of the solutions suggested were of no use after reseting network settings or clearing cache partiotion from recovery i do get 50 mbps on speedtest but only for 10-20 minutes or should i say after 3-4 speedtests the 5th one again goes back to 20-35mbps always even with full wifi strength. 

I hope to get a solution and want to know how many otgers have the same problem. Kindly help if you can i feels bad when a expensive mobile phone

Comes out slower than a mid range 2-3 year old phones.

Thanks in advance.

I would like to add that it was since i upgraded to 50 mbps broadband that i started noticing the slow speed because before this is used to think the old broadband is slow never considered it might be the phone.

[aayushkhajuria]

what do you mean by delete network when i reset network setting it deltes all the known networks anyway. this helps with speed for about 10 minutes. do you think resetting phone might help cause i have a lot of data so i dont want to reset if not necessary.

[aayushkhajuria]

just for your referense one is pic of s8 running same speedtest and 1 is screenshot from note 10+
only 1 device was connected to wifi when speedtest was run i also unplugged all lan cables to get best speed on speed test. as you can seegalaxy s8 always gives the speed equal to lan cable bro i dont how but all the time everytime. .
these speedtest were run from same place one after the other on same app so i dont know what else can be a problem then a software or hardware issue on note 10 + sorry for bad english im typing it as fast as i could

[aayushkhajuria]

it is really disappointing and i was going to buy a new phone have beeen loyal to samsungsince 2013 i think but now i cant if i cant find solution to this then samsing phones are not worth i bought this guy at launch for 80k now i get to know it is not able to compete with mid range phones for wifi speed

[Dilli]

Take your phone back up without network and restore to factory default. After restore then add network. If still there is issue then visit SC if you can

[aayushkhajuria]

ok bro i will try now and post back if i get some improvement . but you saw the pics right ? lan like speeds aall the time on galaxy s8 and a8 ? my plan is 50 and the old mobiles always get minimum 45 ans max 52

[Dilli]

https://youtu.be/MC8QTfzVq4Y

do this troubleshooting steps.

[aayushkhajuria]

factory reset also did nothing still getting 20 to 28 mbps on this phone where as other are still getting almost 50 at almost all times

[Dilli]

Try your friends network and check what speed you get if situation is same then you have to visit SC .

[iamiceparticle]

You can go to samsung service center and get firmware re flashed of Note 10+.

[aayushkhajuria]

my phone is out of warranty period i dont think thell do anything