[Huawei][MTK][Pie][Oreo] Broken GSM/CDMA signal readings

[TenSeventy7]

ROM reads mobile signal as '0 dBm 99 asu' on certain, varying network modes, affecting different devices on a varying scale.

Qualcomm Huawei devices
Tested on the Huawei Y6 (2018) (ATU-L22)

HSPA(P) is only affected
EDGE and LTE reports correct signal values
Radio log: modem_atomu.log

Certain Huawei/Honor devices with Kirin SoC
Tested on the Honor 9 (STF-L09)

LTE seems to be affected as well
Radio log: radio_kirin_stf.txt

MediaTek devices on Android Pie
Tested on: Vernee T3 Pro (2018) (MT6739); Homtom S99 (MT6750)

Only HSPA(P) is affected

[penn5]

Check the radio logs, iirc on hi6250 there is the correct strength there. Or maybe it's caused by IMS (phhusson knows what I'm talking about, I am hackintosh5)

[TenSeventy7]

Triggered a modem/radio restart with airplane mode.
modem_atomu.log

The Huawei Y6 (2018) is MSM8917.

[Deepflex]

VKworld VK 7000 have the same problem

[Anatoly33]

t3pro_radio_log.txt
Signal strench 0 dBm 99 asu on 3G always.
Indicator of signal is gray on 3G always.
On 2G, 4G normal.
phhGSI Pie, v106
Vernee T3 Pro (2018), mt6739, android 8.1
Homtom S99 (2018), mt6750, android 8.0

[occune]

Honor 9 (STF-L09)
Kirin 960
Pixel Experience GSI Official (Oreo, based on AOSP v26 as i remember)
radio_kirin_stf.txt

[TenSeventy7]

Honor 9 (STF-L09)
Kirin 960
Pixel Experience GSI Official (Oreo, based on AOSP v26 as i remember)
radio_kirin_stf.txt

Seems that it's affecting more Huawei devices than I expected.

Can you try adding this line to prop.default (in /system/etc) and see if this fixes your issue?
persist.sys.signal.level=openkirin

[occune]

radio_kirin_stf_prop_edited.txt

[TenSeventy7]

radio_kirin_stf_prop_edited.txt

It didn't work as well?
Seems it's affecting Kirin devices too.

[occune]

Currently signal bar shows that signal is low
DevCheck shows incorrect values too
(btw, switching to OpenKirin mode in trebleapp didnt work for me even on AOSP v106 Pie)

[TenSeventy7]

Signal strench 0 dBm 99 asu on 3G always.
Indicator of signal is gray on 3G always.
On 2G, 4G normal.
phhGSI Pie, v106
Vernee T3 Pro (2018), mt6739, android 8.1
Homtom S99 (2018), mt6750, android 8.0

VKworld VK 7000 have the same problem

Can we get a radio log?

[Anatoly33]

On stock rom currently. After half hour. ср, 31 окт. 2018 г., 10:49 John Vincent notifications@github.com:

…

Signal strench 0 dBm 99 asu on 3G always. Indicator of signal is gray on 3G always. On 2G, 4G normal. phhGSI Pie, v106 Vernee T3 Pro (2018), mt6739, android 8.1 Homtom S99 (2018), mt6750, android 8.0 VKworld VK 7000 have the same problem Can we get a radio log? — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#272 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/Aqg_l48Nr-zD7Xka66U14a4xg0q5lCGVks5uqVYAgaJpZM4YDAQy> .

[Dil3mm4]

Check the radio logs, iirc on hi6250 there is the correct strength there. Or maybe it's caused by IMS (phhusson knows what I'm talking about, I am hackintosh5)

No. There isn't on untouched stuff.

[TenSeventy7]

Could confirm that the signal meter is still broken on Android Pie, regardless of set signal meter reading method.

I think RIL is throwing garbage values, 2147483647 on RSSI.

[ghost]

@TenSeventy7 and me made a workaround for pie

[oscx]

@xBrownieCodez may we know the workaround details or commit related to the hotfix? trying to solve the issue with Oreo, too...

[ghost]

There is no public commit @oscx

[Deepflex]

@xBrownieCodez Hello can you tell me pls how you solve it?

[ghost]

You have to build the ROM yourself and modify specific files.

@Deepflex contact me on discord
x?#1446

[penn5]

I think the invalid values (0,99) might go away with the mcc/mnc fix after #486 is resolved

[exzemat]

Currently signal bar shows that signal is low
DevCheck shows incorrect values too
(btw, switching to OpenKirin mode in trebleapp didnt work for me even on AOSP v106 Pie)
hello,
I have the same problem,with phh (aosp 9, last build) or other build (havocOS by skulshady).
No problem with openkirin (omnirom, last build).
Since no more Android 9 new build...any solution to patch existing build to make signal meter better ?
Or somebody can explain what to do if I can build myself ?