LTE not working on A2017G with Resurrection Remix - switched from Dutch carrier - ZTE Axon 7 Questions & Answers

Hi everyone,
After switching from the Dutch provider KPN to Vodafone I lost the ability to connect to LTE/4G networks. On KPN in both Stock and RR remix LTE was working perfectly without any problems.
What can be the problem? My first thought is that Vodafone is using different bands than KPN, witch are not supported by the Axon 7. But all the Vodafone bands should be supported.
Is there a frequency band or channel that is somehow blocked a custom rom? Also my device is listed as a A2017U instead of a A2017G, is this an issue? Looking on this forum it seems not really of an issue. I flashed the right Modem in TWRP before installing the ROM.
Is there anyone that knows how to fix this issue?

Hey Maxhuisman,
A few months ago i switched from stock 6.0.1 MM rom to RR Nougat and after that Darkrom and a few others. No matter which kind of bootloaders/bootstacks/modems i flashed, the 4G/LTE data service from Vodafone NL just did not work even even after making sure the right LTE bands were enabled in the free app Network Guru. After asking for advise in a few other treads i was told to go back to a stock or near stock rom.
I am currently on Sl1m's B08 Nougat rom where my 4G+ worked instantly after flashing. I am not going to try other roms for now until i'm 100% sure that vodafone LTE works on those roms.

cioeneskens said:
Hey Maxhuisman,
A few months ago i switched from stock 6.0.1 MM rom to RR Nougat and after that Darkrom and a few others. No matter which kind of bootloaders/bootstacks/modems i flashed, the 4G/LTE data service from Vodafone NL just did not work even even after making sure the right LTE bands were enabled in the free app Network Guru. After asking for advise in a few other treads i was told to go back to a stock or near stock rom.
I am currently on Sl1m's B08 Nougat rom where my 4G+ worked instantly after flashing. I am not going to try other roms for now until i'm 100% sure that vodafone LTE works on those roms.
Click to expand...
Click to collapse
Really? That's too bad to hear
Thanks for your reply, I guess I have to go back to stock or to Sl!m then. Very strange that it is not working with Vodafone.

Related

Galaxy SM-A500M 4G does not work with new carrier

Hi all,
I own a SM-A500M phone. The phone has unlocked stock rom (original rom is not modified by carrier) and updated trough OTA to android 5.0.2. I know 4g does work in my phone because I could use it with my prior carrier, but I recently changed to CLARO and with this new provider I don't have 4g acces, only H+ and it is really slow and laggy connection.
I know the following:
1) Sim card is a compatible 4g nano sim
2) The carrier CLARO has 4g coverage where I live
3) The phone is not the problem
4) I have tried all the usual FAQS (APN's, select LTE in config, reboot) with no success.
5) The phone's variant is right (latinoamerican brand), so It can't be due to frequencies or bands problems.
I asked for help in CLARO and told me that this has happened amongst users with unlocked phones (that is, rom not modified with CLARO's bloatware), and the solution is to flash CLARO's rom. But the problem with this solution is that CLARO hasn't released android 5.0.2 update (and I think it will never update) and I really like android 5 and wouldn't want to return to 4.4.
So, is it true? Is there a chance to fix this problem with minor tweaks? What is the problem here?
Since I recently acquired this phone, I would prefer not lossing warranty, so rooting and custom roms might not be an option.
Thanks in advance. Kind regards!
You could try to flash their rom and check if it works. Then you can be 100% sure that hardware/chip/network provider are fine. I have the same phone on since last week, but still did not go to get the chip at a movistar office. Maybe you need to activate the chip and they refuse to do it unless you get their rom. Maybe just getting their rom, and then flashing back the updated stock one or a CM or whatev would be enough.

[A2017G] Unable to get 4G/LTE after b08 update

After the update to b08 I'm unable to recieve 4G/LTE. I tried to lock on the LTE network, but I'm getting 3G only. I'm making this thread to see which people have this problem, and in which country/on which carrier.
Country: Netherlands (northem part)
Carrier: Vodafone NL
It worked on b05/b06.
CrashHouse said:
Killed my LTE 4G.
Back to B06 and LTE 4G up again.
Provider Vodafone NL
Click to expand...
Click to collapse
In b08 thread there was also someone ( crashhouse) on Vodafone where 4g failed to work after upgrade to b08 ...
Coincidence... Vodafone... You'll never know.
Perhaps downgrade to b06 again if this problem persists.
raystef66 said:
In b08 thread there was also someone ( crashhouse) on Vodafone where 4g failed to work after upgrade to b08 ...
Coincidence... Vodafone... You'll never know.
Perhaps downgrade to b06 again if this problem persists.
Click to expand...
Click to collapse
I'm not really planning on downgrading, but I wish someone know's a fix.
I also read people having the same problem but on other carriers.
I'm assuming you'll already checked the settings for dual SIM ? Under network modus you can choose between 4g/3g/2g auto, 3g/2g...
raystef66 said:
I'm assuming you'll already checked the settings for dual SIM ? Under network modus you can choose between 4g/3g/2g auto, 3g/2g...
Click to expand...
Click to collapse
Yes, tried everything.
Bump
keessonnema said:
After the update to b08 I'm unable to recieve 4G/LTE. I tried to lock on the LTE network, but I'm getting 3G only. I'm making this thread to see which people have this problem, and in which country/on which carrier.
Country: Netherlands (northem part)
Carrier: Vodafone NL
It worked on b05/b06.
Click to expand...
Click to collapse
I've excactly the same issue's. I did a rollback to B06. Just to make 4G work again. Hope they fixed it with the Nougat update.
Country: Netherlands, Drenthe (northem part as well)
Carrier: Vodafone NL
Germany Vodafone works with LTE B08 and B09.
Same issue with Vodafone in Netherlands (Utrecht), second SIM from T-Mobile is just fine. I changed slots to no avail. Will not roll back, will wait till next update.
Same issue here in UK on Three since B08. I've seen 4G appear very fleetingly in places where I previously had a solid 4G signal on my old OnePlus One.
Similar issue here (3,UK). Going into Network settings and changing to 3G/2G then back to 4G/3G/2G again seemed to fix it.
nstirton said:
Similar issue here (3,UK). Going into Network settings and changing to 3G/2G then back to 4G/3G/2G again seemed to fix it.
Click to expand...
Click to collapse
This didn't work for me.
zaphy42 said:
Same issue here in UK on Three since B08. I've seen 4G appear very fleetingly in places where I previously had a solid 4G signal on my old OnePlus One.
Click to expand...
Click to collapse
I have been in my work office for 20minutes and the phone shows E network. The only way I managed to get it to detect 4G was to manually search for mobile networks and select the EE 4G option that always shows up. Phone then connects to 4G with 3 signal bars and signal strength 108 32.
The phone often fails to pickup 4G even though there is a good connection.
Once phone has been manually connected to 4G it stays well connected so long as I stay in the same office location.
GiffGaff / Vodafone multisim. Using Vodafone for Data. 4G works no problem. I've upgraded using the file rather then OTA
They know about the problem and are working on a fix for it.
rikin93 said:
They know about the problem and are working on a fix for it.
Click to expand...
Click to collapse
Yes, talked with them several times about it. A fix is coming.
Bump
I flashed LineageOS coming from B08, still no LTE... It's driving me crazy, it's been weeks.
I'm now figuring out if I can downgrade to b06 and reflash LineageOS to see if that fixes it.
keessonnema said:
After the update to b08 I'm unable to recieve 4G/LTE. I tried to lock on the LTE network, but I'm getting 3G only. I'm making this thread to see which people have this problem, and in which country/on which carrier.
Country: Netherlands (northem part)
Carrier: Vodafone NL
It worked on b05/b06.
Click to expand...
Click to collapse
Country GREENLAND
Carrier: LTE Tele Greenland
didnt work with BO6
Same issue here.
Country: Netherlands, Gelderland
Carrier: Vodafone NL
Sorry for the n00b questions, but got this phone for a week now and what i don`t understand is the difference between several b04, b05, b06 versions.
Got Lineage working now and came from B11, and in B11 LTE works and i have a full backup from B11 but i can`t flash this with twrp?
What do i need or what can i do to get LTE?
edit: Just followed this guide. And flashed the "A2017G_N_Modem.zip" also and that`s the problem i think wich doesn`t support LTE, am i right?
GOOD NEWS:
I'm a tester for the Axon 7 now, and the developer team successfully managed to fix the problem in Nougat 7.1.1. I'm running a testbuild as we speak.
A public release is coming soon. So stay tuned. @the_cyberspace

No LTE anymore with A2005

Hey guys, i've read a lot here and i think my problem is kind of mysterious.
I got an A2005 with stock Rom and LTE was working only on Band7. In germany i need Band20, which the A2005 originally doesn't support.
Then i flashed RR Rom and tried to unlock additional Bands as mentioned in several Threads.
Now i can't get any LTE Signal.
This is what i already did:
deleted the whole phone, flashed stock oxygen OS 3.6.0. No lte.
What can i do now?
I've just updated to 3.6.0 and i no longer get LTE on my signal meter. I get 4G all the time but I am on a network that supports superfast LTE so I have no idea if I'm actually getting those speeds still.
I did see a thread about band unlocking but I don't wanna risk killing my daily driver.
Sent from my brain, via my thumbs, onto the screen of a OnePlus Two input device

Vodafone Germany on SM-G935T

Hey guys! I brought my unlocked T-Mobile USA S7 Edge to Germany and it works fine with either Vodafone or Telekom, but no Wi-Fi Calling works. They suggested me to get one of their phones but since I had to fully pay for this device to get it unlocked I don't want to throw 800 bucks away like that.
Is there a way to get this to work? Is it possible to flash a different CP / Modem / Radio / Firmware that could potentially get this working? I know the bootloader is locked but I'm not sure if there are any workarounds as I've seen people successfully getting G935U firmware to work on their unlocked T Mobile S7E.
Any advice? Thanks in advance!
Anyone? ?
You can easily flash "T" model with "U" firmware - been there, works well.
What do you mean by wifi calling? Ggl duo/hangouts, whatsapp, all that kind of apps work fine on whichever firmware.
PS. Flashing T/U versions works even if your bootloader is locked (mine is).
Hey!
Thank you for your reply. I managed to Flash the U Firmware but WiFi Calling or VOLTE still won't work. I can over whatsapp and it's cool I guess but would be good especially when calling some people overseas who don't UE whatsapp as wifi calling means no international roaming charges.
That or also the ability to just flash about any custom Roms would be cool too.

VS995 weak or no signal in Europe

Hello. I have unlocked Verizon V20 VS995 and I am in Europe. In the urban areas phone works fine with all frequencies, also 4G B3 and B20 frequency, but when I go just outside town it looses network. Any sugestions?
CDMA LGV20 will suffer with those issues in Europe. So just switching to a native LTE/GSM device is the only way...
But I can't understand why the sognal is so weak when phone supports all the frequencies in my country. I even changed antennas (plastic bumpers) but still the same result.
Simple explanation - it is not a HW issue - the root cause is combination of your modem firmware and stock ROM you are using as the LTE/GSM band usage is set to be with lower priority and the modem constantly searches for the CDMA signal firstly...
So, is there anything to fix this? Maybe flash another rom or modem, if I find somehow to root stock Oreo.
If you are in VS995 really (and please check the sticker indication under your battery for that it should state VS995 only without Sat the end) you can roll back to Nougat via kdz flash and unlock the bootloader via DirtySanta, flash custom recovery and flash afterwards AOSP/LOS based roms.
I think I have VS995 because before ota upgrade to Oreo I have installed few KDZ's from the link without any problem. Can you tell me how can I check ARB version of Oreo?
All Verizon ROMS including Oreo are ARB00
Also you might try flashing Oreo Alpha Omega Hybrid ROM firstly and if not happy than try RR roms...
Tried Alpha Omega ans Lineage 15.1 and the situation is the same. Poor signal strenght.
scytalemk said:
Tried Alpha Omega ans Lineage 15.1 and the situation is the same. Poor signal strenght.
Click to expand...
Click to collapse
Hi, did you find an answer? I have same problem... shame, lovely phone...
try use it without phone covers... it will get more bars lol

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