Develop Bugs

[Q] Radio question.

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Before I rooted (2.2 and radio not known) I would have full strength anywhere in the house with WIFI. After rooting and installing CM7 my signal is weaker.
Installed 2.15.10.07.07 with no improvement or with 2.15.00.05.2 (current)
WiFi scanning in areas I used to receive service fails to obtain them.
3G seems somewhat weaker but that is only a guess. GPS is good.
Advice?
(or after rooting it is really now telling me the truth)

Wifi has nothing to do with the radio. Not sure what your issue is caused by though. Wifi bars may visualy change at different percents in different roms like battery mods do.

Signal or RIL for the GS3?

Had AOKP and CM10 installed and each time I have to revert back to Stock or Kyan due to signal issues. Here is the situation, with any of the rom's build off the ucalem baseband that i have installed, I am always getting A LOT of loss of signal under Settings>battery>cell standby, But , when I have a stock or Kyan installed, there is no problem. I know from the nexus that this kind of stuff has to do with the RIL but yet I have not see anything here regarding this nor anyone else complain about the same thing. I am using bell SG3 with MVLLE8. Could the GB rom be reporting signal when in fact there is non, because a couple of times I have noticed that I had no signal but yet on the phone it was showing 2-3 bars then nothing. But using JB It just shows no signal and loads of time without signal. Would love ti get this figured out to be able to run AOPK or Cynaogen. I would flash the baseband, but I do not want any IMEI problems and also I have read that the ATT baseband does not support Dual Cell LTE here in Canada.

[Q] F240l Signal Issue

I have purchase F240l from online store but i have serious signal reception issues with this mobile.
1- In outdoor Network reception is around 5-10 dbm less than other mobiles. But the real problem comes when i am in low signal areas. This phone will disconnect all of sudden after -95dbm. while other mobiles are still locked to network.
2- The wifi reception is poor as compared to other phones.
3- The GPS never locks. in GPS test it shows 28 satellites in view as soon as GPS test is started but actually all signals remain at zero and in view satellites also remain to zero.
I want to know if this problem is related to hardware or software.
Also if you guys can suggest some solution to this problem from your experience it will be very helpful.
Note: I have reflashed stock jellybean and kitkat roms by lg flash tool but there is no change in situation.

Replace the build.prop
muhammad.ali123 said:
I have purchase F240l from online store but i have serious signal reception issues with this mobile.
1- In outdoor Network reception is around 5-10 dbm less than other mobiles. But the real problem comes when i am in low signal areas. This phone will disconnect all of sudden after -95dbm. while other mobiles are still locked to network.
2- The wifi reception is poor as compared to other phones.
3- The GPS never locks. in GPS test it shows 28 satellites in view as soon as GPS test is started but actually all signals remain at zero and in view satellites also remain to zero.
I want to know if this problem is related to hardware or software.
Also if you guys can suggest some solution to this problem from your experience it will be very helpful.
Note: I have reflashed stock jellybean and kitkat roms by lg flash tool but there is no change in situation.
Click to expand...
Click to collapse
You should try this Method.
This might solve your problem. You should backup your original build.prop in case things goes wrong, also make a Nandroid backup.
Btw it didn't work for me actually 'cause I had other radio issues with my phone.
All the credit goes to Akhtar Ali Jatt... Thanks him if it works.

I was already on custom build.prop to get rid of the Korean rom problems.
Yesterday i also installed Sphinx 3.0 which is supposed to have better signal strength.
But all of this did not work.
I want to know if other f240l users have same problem because it is not optimized for international use.
Or this problem is specific for my phone.
For hardware issue, i improved the antenna connections with pcb but still no change.

muhammad.ali123 said:
I was already on custom build.prop to get rid of the Korean rom problems.
Yesterday i also installed Sphinx 3.0 which is supposed to have better signal strength.
But all of this did not work.
I want to know if other f240l users have same problem because it is not optimized for international use.
Or this problem is specific for my phone.
For hardware issue, i improved the antenna connections with pcb but still no change.
Click to expand...
Click to collapse
Hey bro,if you can solve the problem please let me know.Thanks.

muhammad.ali123 said:
I have purchase F240l from online store but i have serious signal reception issues with this mobile.
2- The wifi reception is poor as compared to other phones.
Note: I have reflashed stock jellybean and kitkat roms by lg flash tool but there is no change in situation.
Click to expand...
Click to collapse
did you or anybody solve this problem? i also have issue with my wifi. it works only when atleast there are 3 bars. on two bars it shows random disconnection and also speed is very poor on two bars. and it never detect one bar unlike other mobiles... also reception is poor then other mobiles.. please help me. i will even consider donating if somebody solve my issue..
p.s. i have f240k on stock kitkat

sna762 said:
did you or anybody solve this problem? i also have issue with my wifi. it works only when atleast there are 3 bars. on two bars it shows random disconnection and also speed is very poor on two bars. and it never detect one bar unlike other mobiles... also reception is poor then other mobiles.. please help me. i will even consider donating if somebody solve my issue..
p.s. i have f240k on stock kitkat
Click to expand...
Click to collapse
Many users have the same problem so there's nothing you can do to get better wifi signal.
Ps: my F240L is also has very weak wifi signal.

Any news about this issue? I have F240L with weak WIFI and GSM signal.

up

Signal problem on custom roms.

my z2s signal keeps fluctuating continuously from -70dbm to -110 dbm in custom roms on HSPA network. in stock rom there is no such problem. is it the same for everyone and is there a solution?

Ya, its a problem in all custom roms which are besed on lineage os or aosp etc. Infact not only in our Z2 plus, but on other smartphones too. Tried on many smartphones. I was using miui 8 on my previous smartphone and it was great. Unfortunately there is no solution for signal problem. Funny thing is that no one talk about it. You are the first who is complaining about signal problem. I am observing this issue since 2014 and there is not a singal thread on this topic.

Ditto.
I have been having this problem with most if not all custom ROMs. I have tried different basebands without any success.
However, most of the time signal is still available even if the meter shows otherwise.

asrone96 said:
my z2s signal keeps fluctuating continuously from -70dbm to -110 dbm in custom roms on HSPA network. in stock rom there is no such problem. is it the same for everyone and is there a solution?
Click to expand...
Click to collapse
Yes the problem is same for all of us.Even after updating the baseband to 1.76 their is signal fluctuation which is disappointing.

Experiencing the same problem with LineageOS 15.1.
On 3G signal is jumping around, but connection isn't lost.
On 2G signal is stable, no fluctutations.
On 4G I can't tell, because my Z2 is lacking band 20, on which I mostly would have 4G with my provider here.
Baseband is 1.70

anyone found solution? yesterday i flashed custom rom for the first time n experiencing fluctuations, using Vodafone 4G IN

Try arrow 3.18 Oreo or pie or bootleggers no such issue is present .. also aex 5.8 Oreo or pie.. tried all 4 no such issues

Best signal on zuk only in zui, in custom signal quality is bad. ;-;

Hey bro this is the solution you need to flash a custom baseband zip coz the one you might be having is outdatedBTW be careful on what zip you are flashing coz it might lock your bootloader and remove all lock screens

Please share
Bravin Joshua said:
Hey bro this is the solution you need to flash a custom baseband zip coz the one you might be having is outdatedBTW be careful on what zip you are flashing coz it might lock your bootloader and remove all lock screens
Click to expand...
Click to collapse
Do you have the zip...?
Please share..
I'm using stock rom now because 4g signal is rock stable even indoors and no 4g/3g/2g switching issues...

nikhilZ2 said:
Do you have the zip...?
Please share..
I'm using stock rom now because 4g signal is rock stable even indoors and no 4g/3g/2g switching issues...
Click to expand...
Click to collapse
Nop Im not sure

Depends on area
Bravin Joshua said:
Nop Im not sure
Click to expand...
Click to collapse
It depends on nw coverage in your area.
Its my personal experience.
And share your experience please...

Its the custom ROM and coverage which fluctuating AF

Low Mobile Signal Coverage

Whenever im using Custom ROM, Mobile signal getting worst. 1-0 Bar most of the time. But if im using ANY custom rom base on MIUI, i will get full signal coverage. How and why this happening? Anyway i can fix?
UPDATE : After do some experiment, so now i know signal strength on Miui Rom are somewhat FAKE. Tested by changing both rom back and forth. On Miui i have full LTE signal bar, but download and upload speed are the same with Aosp based rom (havoc os) with only 1 or zero bar signal. Miui is a lie.