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Question S21 Ultra 5G - SM-G998B - Exynos - Problems with mobile data and signal.

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noone606

Senior Member
Dec 7, 2010
185
8
Careful mate the fanboys an all ......
Yeah can swap Sims with the phones in the same location and it's obvious the Huawei is better
I also find the Samsung will struggle but if I toggle airplane mode sometimes it'll come back on lousy, but usable, 4g instead of H+
Huawei even pixel xl will not have issues in the same location's
 

lywyn

Senior Member
Jul 19, 2010
363
129
I have 1 bar on 4G and two speed-test apps get 27Mbps and 30Mbps so although I look to have a bad signal its got a decent data connection for the connection for 4G. After a chat with one of the network engineers, he confirmed the 1-4 bars on phone are not the true reflection of the speed, if you have 1 bar connection you have a good connection. If the speed is slow it is usually the mast and area. One cell tower near my home is right next to a massive Aldi distribution centre and since it opened a few years ago the cell tower is struggling under the excessive amount of phone connections and that is why even stood right next to it the speed is slower than a connection elsewhere with less bars. You cannot assume speed vs low bars is the problem, call your mobile service and raise an issue as I did.
 

noone606

Senior Member
Dec 7, 2010
185
8
if you go to settting-about phone-simcard status-you can actually get signal strength in dBm
this is far more relevant than bars
the problem i see over and over again is the dB gets to -120 or so (which is pretty lousy )
so the Samsung drops back to h+ or even no signal but seems very slow to go back to 4g even if the signal improves
if i toggle airplane mode on and off suddenly i will have 4g 1 bar or whatever and usable data
in an area previously the phone showed h+ or even no signal at all
been modding APN's and getting slightly better reliability
had hoped the community had a real fix
 

smoovie2003

New member
Dec 17, 2017
1
0
Hello everyone,


I don't know it this will work for you, but for me it did the trick:


In the APN settings, enter the "Bearer" option and uncheck everything but "LTE".


Save, reboot and check.


It upped my bars from 1 to 3 on 4G Orange România.


Let me know if it did any change with your reception.

Regards.
 

012512

Senior Member
Jun 2, 2013
629
78
Samsung Galaxy S21 Ultra
Hello everyone,


I don't know it this will work for you, but for me it did the trick:


In the APN settings, enter the "Bearer" option and uncheck everything but "LTE".


Save, reboot and check.


It upped my bars from 1 to 3 on 4G Orange România.


Let me know if it did any change with your reception.

Regards.
Man this worked for me!! I will update after a day to see it was ok!
 

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  • 2
    Congrats
    your just lucky
    Most are not
    I'm sorry that you have problems with your device, but do you know most people? The vast majority of people who bought this phone, doesn't face any issues with the signal, so they don't go to post on forums about it. There is always that loud minority who think that everyone has this problem, just because they have it.

    And it's "you're", not "your".
    1
    Has anyone ever found a solution to the abysmal signal strength on this lemon

    Haven't faced any signal issues so far. I get fantastic LTE signal on my S21U, same as my wife's OnePlus 6. No issues with call quality or network speed either.