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LTE not working on LineageOS 14.1

Recently i installed Custom ROM LineasgeOS 14.1 . But currently i am facing two problem.
1. I am getting only GSM 2G network, no 3G or 4G.
2. No radio
System Details: LineageOS version : 14.1-20180418-NIGHTLY-cherry
Android Version : 7.1.2
Device Model: Che1-L04
Internet Provider: O2 postpaid (Country Germany)
Here is what i tried:
1.
Went to Phone Dialer;
Dial *#*#4636#*#* to choose phone information;
Set the Preferred Network Type to LTE/GSM auto (PRL);
Turn off the radio and turn it on again;
Go to the SMSC and click Refresh>> Update.
2. Changed phone internet setting, tried with different network types
3. Tried to change Access Point settings according to my provider
Nothing worked :crying::crying:
Did anyone faced the same problem or know how to solve this problem.
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But it did not work.

nomades said:
Recently i installed Custom ROM LineasgeOS 14.1 . But currently i am facing two problem.
1. I am getting only GSM 2G network, no 3G or 4G.
2. No radio
System Details: LineageOS version : 14.1-20180418-NIGHTLY-cherry
Android Version : 7.1.2
Device Model: Che1-L04
Internet Provider: O2 postpaid (Country Germany)
Here is what i tried:
1.
Went to Phone Dialer;
Dial *#*#4636#*#* to choose phone information;
Set the Preferred Network Type to LTE/GSM auto (PRL);
Turn off the radio and turn it on again;
Go to the SMSC and click Refresh>> Update.
2. Changed phone internet setting, tried with different network types
3. Tried to change Access Point settings according to my provider
Nothing worked :crying::crying:
Did anyone faced the same problem or know how to solve this problem.
But it did not work.
Click to expand...
Click to collapse
I think you should try other options listed in the Set Preferred Network Type, based on the type of Network listed the Wikipedia article. You can try to research about what type of network your carrier uses, then mix and match it until you get the appropriate setting.
Anyway, thank you for the *#*#4636#*#* that let me fixed my network.
Have a nice day fixing!

rn4Nlos said:
I think you should try other options listed in the Set Preferred Network Type, based on the type of Network listed the Wikipedia article. You can try to research about what type of network your carrier uses, then mix and match it until you get the appropriate setting.
Anyway, thank you for the *#*#4636#*#* that let me fixed my network.
Have a nice day fixing!
Click to expand...
Click to collapse
I am happy that it helped you and thanks for suggestion

So finally i found the solution.
I found out that i had problem with dual sim. When i was using dual sim i was getting EDGE (2G) on my primary sim but when i removed my secondary sim then 3G/LTE start working . Even swapping primary and secondary sim in sim slot one and slot 2 was not helping. It is quite strange but it solved my problem.

nomades said:
So finally i found the solution.
I found out that i had problem with dual sim. When i was using dual sim i was getting EDGE (2G) on my primary sim but when i removed my secondary sim then 3G/LTE start working . Even swapping primary and secondary sim in sim slot one and slot 2 was not helping. It is quite strange but it solved my problem.
Click to expand...
Click to collapse
Glad to hear that.

Thanks.
nomades said:
So finally i found the solution.
I found out that i had problem with dual sim. When i was using dual sim i was getting EDGE (2G) on my primary sim but when i removed my secondary sim then 3G/LTE start working . Even swapping primary and secondary sim in sim slot one and slot 2 was not helping. It is quite strange but it solved my problem.
Click to expand...
Click to collapse
Thanks for solution working for me too on mokee rom, love you man :good::good::good::good:

nomades said:
So finally i found the solution.
I found out that i had problem with dual sim. When i was using dual sim i was getting EDGE (2G) on my primary sim but when i removed my secondary sim then 3G/LTE start working . Even swapping primary and secondary sim in sim slot one and slot 2 was not helping. It is quite strange but it solved my problem.
Click to expand...
Click to collapse
Thank you so much! The mobile data was lacking in my Moto G6 Plus (running the official release lineage-17.1-20200407-nightly-evert-signed.zip). Once I tried to remove the SIM 2 from my phone, the mobile data worked so well. Then I pulled the two SIMs into my phone, and happily both worked at all. :good:

nomades said:
So finally i found the solution.
I found out that i had problem with dual sim. When i was using dual sim i was getting EDGE (2G) on my primary sim but when i removed my secondary sim then 3G/LTE start working . Even swapping primary and secondary sim in sim slot one and slot 2 was not helping. It is quite strange but it solved my problem.
Click to expand...
Click to collapse
You're the best brother. Thanks for the solution.

I have bn using android 11 on SM-A705FN. Then I can switch to any of two Sims for internet. Just from drop down, there are options sim1, sim2 and data Sims to choose any sim for it, depending the sim that was subscribed for internet.
But now on lineage os 20....no such privilege. The phone automatically chooses Sims....
Please help rescript this error so that person can choose any sim for internet....thank u...

Wifi calling and Volte

Hi. So I was having trouble with calls, signal drops, very annoying whooshing noises and so on. When I contacted the carrier they said let's turn VOLTE THEN WIFI CALLING. my wife and I have the p20 pro CLT-LO4 and neither of our phones have an option for volte or wifi calling. Contacted carrier(Koodo) I'm in canada. They said well it's suppose to be there reset you phone and check again. No dice then press *#*#4935#*#* and it does nothing. They say it's enabled on there end and don't have a solution... I called Huawei and they took my serial number and model and told me that it's the carrier 100%....

try this.
Open phone settings > Wireless & networks > Mobile network > both VoLTE calls and Wi-Fi calling settings should be there.
if you can't find, it is because the carrier disabled it in the rom. Try to unlock bootloader, root and flash an international rom to get it back.

When I talked to the carrier they assured that it was unlocked.
If you have a link on how to preform the tasks you said ide definately give it a try
Thank you

One question tho is it possible to brick the phone? Reason I'm asking is my wife's phone is 8 months old but I just switched from my s9 to this one 2 days ago so i can tech bring it back and get a refund but the problem is there isn't any other phones offered besides the p30 pro that compare and I would have to pay $690 down plus 20 a month for 24 months where as p20pro was $0 down and 15 a month.

If the carrier supports it, then you should have the option in settings. In my case, when I bought the phone only one of the two carriers that I have in each sim card was supporting WiFi calling. Now that both support it, I have it in the settings. The problem that I have found with WiFi calling though is that if you start a phone call through WiFi and you move to a place with bad reception, then the call is dropping. Also, if you are on a WiFi call and you go to a place where the wifi has no reception whatsoever, then again the call drops, instead of switching to normal call. In other words, whatever the way you make the call, you have to finish it. There is no switching during the call; this became really frustrating, so I now switched it to mobile network preferred
Sent from my CLT-L29 using Tapatalk

Alot of misinformation about this on the net.
Regardless of what your carrier says this is in fact a carrier issue.
If you simply swap sim cards to another carrier that DOES support these features on all phones with no restrictions then it will show up in the settings.

sinnedone said:
Alot of misinformation about this on the net.
Regardless of what your carrier says this is in fact a carrier issue.
If you simply swap sim cards to another carrier that DOES support these features on all phones with no restrictions then it will show up in the settings.
Click to expand...
Click to collapse
Exactly, line one doesn't have that option but SIM 2 does .
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Sent from my EVR-L29 using Tapatalk

Limeybastard said:
Exactly, line one doesn't have that option but SIM 2 does .View attachment 4878505
Sent from my EVR-L29 using Tapatalk
Click to expand...
Click to collapse
This screenshot is from a Mate 20 X but the same thing shows up when I insert this sim into a P20 Pro.
(Oh....in the United States when you pop in a T-Mobile SIM you will have Volte toggle in settings but not on ATT)

sinnedone said:
This screenshot is from a Mate 20 X but the same thing shows up when I insert this sim into a P20 Pro.
(Oh....in the United States when you pop in a T-Mobile SIM you will have Volte toggle in settings but not on ATT)
Click to expand...
Click to collapse
T-Mobile SIM 1 , no volte toggle here thanks for the clarification. My post was primarily to reinstate your point about WiFi being carrier/SIM dependent.
Sent from my EVR-L29 using Tapatalk

quinnford said:
When I talked to the carrier they assured that it was unlocked.
If you have a link on how to preform the tasks you said ide definately give it a try
Thank you
Click to expand...
Click to collapse
I'll upload a video tutorial when i get back home tonight.

spiderx_mm said:
try this.
Open phone settings > Wireless & networks > Mobile network > both VoLTE calls and Wi-Fi calling settings should be there.
if you can't find, it is because the carrier disabled it in the rom. Try to unlock bootloader, root and flash an international rom to get it back.
Click to expand...
Click to collapse
hi i tried searching in google for the volte enable in my mobile device Huawei P20 Pro , my other sim says it is volte ready however the other sim volte radio button cant be seen i tried switching sims but everytime i switch sim the volte button will transfer leaving me a sim card tray with no volte does this mean that it is the carrier needs to enable volte? others say that i need to wait for update on my mobile device

My device has a model CLT-L29 Global version for Huawei P20 Pro EMUI version is 10.0.0 Android 10 and it says for this version there is no update for EMUI 11 so does this mean i can not use volte anymore or do i need to contact carrier for the volte to be enabled?

thanito said:
If the carrier supports it, then you should have the option in settings. In my case, when I bought the phone only one of the two carriers that I have in each sim card was supporting WiFi calling. Now that both support it, I have it in the settings. The problem that I have found with WiFi calling though is that if you start a phone call through WiFi and you move to a place with bad reception, then the call is dropping. Also, if you are on a WiFi call and you go to a place where the wifi has no reception whatsoever, then again the call drops, instead of switching to normal call. In other words, whatever the way you make the call, you have to finish it. There is no switching during the call; this became really frustrating, so I now switched it to mobile network preferred
Sent from my CLT-L29 using Tapatalk
Click to expand...
Click to collapse
I am also using CLT-L29 GLOBAL however only one sim has the wifi calling radio button enabled and hd calling but on sim 2 there is no volte calls radio button both sims are set to 4G i have tried switching sims but everytime i switch sims the sim that has volte calls radio button and wifi calling will move if i switch the sim cards the other sim tray no volte radio button will appear

mobile network not available

My P9 have problem with network (mobile network not available).
I don't get any message and calls, also can't call and write messenge. But mobile internet working fine 4G.
I found that, then i switch sim card slot in 2G option (dual card management) phone works. But problem is mobile internet now just 2G.
p.s. not using 2 sim card.
Build number: EVA-L19C432B166
Android 6.0
No Updates
Any idea???
I'm new there so ....

rokazas001 said:
My P9 have problem with network (mobile network not available).
I don't get any message and calls, also can't call and write messenge. But mobile internet working fine 4G.
I found that, then i switch sim card slot in 2G option (dual card management) phone works. But problem is mobile internet now just 2G.
p.s. not using 2 sim card.
Build number: EVA-L19C432B166
Click to expand...
Click to collapse
Test if calls and SMS work in the following scenarios (Settings/Wireless & networks/Mobile network)
1) Preferred network mode: 4g/3g//2g auto
If you have VoLTE settings, try VoLTE enabled and disabled
2) Preferred network mode: 4g/3g//2g auto
Disable: Mobile data
3) Preferred network mode: 3g only
Mobile data enabled and disabled

Nothing, still same problem
Then I set in 2g works, like in photo
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rokazas001 said:
Nothing, still same problem
Then I set in 2g works, like in photo
Click to expand...
Click to collapse
And with Preferred 3g only, does Mobile Internet work, and how the connection icons in the Status bar (top left) look like (see a screenshot)
Also, install apps like:
Network cell info lite
Net monster
Net monitor lite
and check for Preferred 3g only, do they show 3g band (cell, etc) the phone is attached to - see my screenshots
And go to:
https://willmyphonework.net/
fill your phone (Huawei, P9, L19), your country and operator and check under 3g does it show green checkmark
PS: I cannot open your Photo in the last post
Edit:
Check your operator's 3g bands (find on the Net or ask them), specially for 3g band(s) available where do you live, against the 3g bands supported by P9 L19:
https://consumer.huawei.com/ph/phones/p9/specs/

now then i updated to EVA-L19C432B399
Apear messange in top "no service" - Selected network .... 4G unavailable.
Then using both cards manualy selected use only 2G, no message warning, but no call and message. Signal indicators both cards almost full.
And then i go back to 1 card message apear again Selected network .... 2G unavailable.
If i restart phone no message warning. And Signal indicators almost full
https://pasteboard.co/IH53BvP.jpg
So 4G available. And on another phone working fine.
https://pasteboard.co/IH550YU.png
https://pasteboard.co/IH57ilO.png
Then i set main card like this in 2G its works call and internet, but another card not. But if i switch them one card will work who is in 2G slot.
It's looks like 1 card for calls 2G and another for internet 4G ....

rokazas001 said:
now then i updated to EVA-L19C432B399
Apear messange in top "no service" - Selected network .... 4G unavailable.
Then using both cards manualy selected use only 2G, no message warning, but no call and message. Signal indicators both cards almost full.
And then i go back to 1 card message apear again Selected network .... 2G unavailable.
https://pasteboard.co/IH53BvP.jpg
So 4G available. And on another phone working fine.
https://pasteboard.co/IH550YU.png
https://pasteboard.co/IH57ilO.png
Then i set main card like this in 2G its works call and internet, but another card not. But if i switch them one card will work who is in 2G slot.
It's looks like 1 card for calls 2G and another for internet 4G ....
Click to expand...
Click to collapse
You have Dual SIM settings to choose which SIM will be 4g/3g, the other will be 2g only.
Also, which to use for Data - see the screenshot.
Set accordingly (4g and Data to one SIM, default for calls the other SIM)
But did you check about 3g bands, as in my previous answer - apparently you cannot attach to 3g at your place. Supposedly, no 3g band to match between your operator and what the phone supports
Because, when you are on 4g (for Data), then it must switch to 3g for calls and SMS (and it cannot if it cannot attach to a supported 3g band)

Main card is card for calls and internet.
Now checked with 3G same problem.
Signal intication almost full. Tryed with mobile data on and off nothing.

Problem solve.
Phone blocked by imei ... Dam how simple to check

Force LTE only without root access, Huawei P30 Pro

I would like my phone to always reconnect to the network once it looses LTE bandwidth.
The thing is that the provider gives me LTE for the first few minutes, but then reduces my speed to HSDPA
So what I need is an app that goes into the airplane mode for just one second and then reactivates the connection.
I found out that rooting my phone is impossible and all the apps that I tried do not work without root.
I downloaded about three different apps all claiming to provide a "Force LTE" experience.
Any suggestions on how I can achieve the goal of auto reconnecting to the network in case my bandwidth drops lower than LTE?
It wouldnt be an issue if I would be actively sitting on the phone, but I am using it as a hotspot with the phone at the window to have best connectivity.
Greetings from Venezuela!

adamlee2012 said:
Download this app and change the numbers I've circled in red to just "11" and reboot. You'll have loads more network choices.
Click to expand...
Click to collapse
Thanks, I did, this is the result:
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"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
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"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
(I cant post a link nor add an image as I am a new user)
https(slashslash)imgur.com/a/y1vVc6g
It appears to me that the provider doesnt allow me to choose LTE only? Is that possible?

Dr. Dolittle said:
I would like my phone to always reconnect to the network once it looses LTE bandwidth.
The thing is that the provider gives me LTE for the first few minutes, but then reduces my speed to HSDPA
So what I need is an app that goes into the airplane mode for just one second and then reactivates the connection.
I found out that rooting my phone is impossible and all the apps that I tried do not work without root.
I downloaded about three different apps all claiming to provide a "Force LTE" experience.
Any suggestions on how I can achieve the goal of auto reconnecting to the network in case my bandwidth drops lower than LTE?
It wouldnt be an issue if I would be actively sitting on the phone, but I am using it as a hotspot with the phone at the window to have best connectivity.
Greetings from Venezuela!
Click to expand...
Click to collapse
The method is very easy:
1. Use SIM 1 as the default connection setting
2.
You need to install this app for FREE
at Google Play
https://play.google.com/store/apps/details?id=com.teknokia.force4glteonly
pro version : https://play.google.com/store/apps/details?id=com.teknokia.force4glteonlypro
galaxy store: https://apps.samsung.com/appquery/appDetail.as?appId=com.teknokia.force4glteonly
pro version : https://apps.samsung.com/appquery/appDetail.as?appId=com.teknokia.force4glteonlypro
3. Run the application, press the SIM 1 only or Android testing button. You will enter two LTE Switcher options and also 2 Android testing options.
4. You can try all of them which support your phone.
If the telecommunication operator you are using does not support VoLTE (Voice over LTE) and uses LTE Only Mode, so regular calls will be blocked.
for complete detail with video. you must going to teknokia site

Will there be a problem if I flash "xz1 Compact" with basic xz1 dual firmware because I want to use external piece of dual sim?

I want to do this because I want to use a external dual sim.
Can it work well with basic xz1 dual compact framware?
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These dual SIM adapters work by switching between SIM cards every minute or other interval. It allows you to have both SIM cards "online" without need to replace them in the slor but in reality only one is connected to the network at the moment. You do not have to flash or install any software to make these adapters work so there is no need to flash XZ1 Dual firmware. And on the attached image I can see not the dual SIM adapter but only one SIM slot on a flex cable allowing to replace the SIM card without opening the phone's SIM card slot.

mp107 said:
These dual SIM adapters work by switching between SIM cards every minute or other interval. It allows you to have both SIM cards "online" without need to replace them in the slor but in reality only one is connected to the network at the moment. You do not have to flash or install any software to make these adapters work so there is no need to flash XZ1 Dual firmware. And on the attached image I can see not the dual SIM adapter but only one SIM slot on a flex cable allowing to replace the SIM card without opening the phone's SIM card slot.
Click to expand...
Click to collapse
Hey
Will the dual sim card appear on the screen? "Like a picture."
for example ,I want to control sim 1 runs the internet and sim2 for calling .The problem is that xz1comapt original operating system does not support dual SIM, so I want to flash xz1comapt by XZ1 firmware dual for more control over the dual sim ,
Or any way to add duall sim manager without flash phone
Example for Cable to run dual sim

shadyhoo said:
for example ,I want to control sim 1 runs the internet and sim2 for calling .The problem is that xz1comapt original operating system does not support dual SIM, so I want to flash xz1comapt by XZ1 firmware dual for more control over the dual sim
Click to expand...
Click to collapse
Any dual SIM adapter which is connected just to the phone's SIM slot is a workaround which has drawbacks and limitations I mentioned earlier.
With dual SIM adapter connected to the SIM card slot when you will call the sim2 the sim1 will be offline. And when you will use the sim1's data connection the sim2 card will be offline. That is a hardware limitation which cannot be bypassed. And flashing the XZ1 Dual's firmware will not change that.
In order to be able to call using sim2 and use the data connection on sim1 at the same time you would have to use some Bluetooth connected dual SIM adapter. That way both SIM cards will be able to use their own RF frontend (~transmitters and receivers) - as phone has one own and such adapter has a second one - and only then both can be online at the same time.
shadyhoo said:
any way to add duall sim manager without flash phone
Click to expand...
Click to collapse
Unfortunately, there is no way to make it work on a single SIM phone. It is both software (lack of this menu) and hardware (no way to have both SIM cards online at the same time) limitation.