The phone comes in 2 versions, and one of them supports band 4 LTE.
And the one with band 4 support comes with customized mui version from the seller, as soon as I changed the ROM I lost LTE, it just shows unknown Network, no signal if I force LTE.
I tried using the modem from the customized ROM but it didn't fix LTE. I also tried keeping all the firmware files and flashing a different ROM but still no LTE.
And for some reason I can get LTE on sim2 on one of the aosp Roms.
It looks like it depends on the ROM itself, on how it handles the LTE.
So my question is what files and folders handle LTE or signal in general in a ROM so that I can copy or modify the files. The seller was nice enough to send me their customized firmware.
I tried all the settings in the phone and #*#*4636#*#*, nothing makes it work.
Edit:
Never mind, i tried to flash the custom firmware but still no LTE.
Get the APN of your network and enter it in under settings mobile networks Access Point Names
I have the same problem, I flash the global stable version and I lose the 4G connection, if you fix the problem share the details. I find methods but I can't fix the issue.
Related
I have flashed many different roms trying many different APN configurations, and found out the only way to get true "LTE" speed. Is to stop at the carrier (AT&T) and have them put you on the "LTE" network. Without this no way to recieve "LTE" speed. You can also call them & tell them you have a new phone and give them the IMEI number. No need for different sims just do there thing. No added cost to plan, just them changing you in the system. And hold on because this thing is Faaaaaaaast!!:
Yes...you need to subscribe to LTE network with your provider since LTE runs on different bands than your regular GSM bands.
Sent from my Galaxy Nexus using XDA App
bradmikd said:
I have flashed many different roms trying many different APN configurations, and found out the only way to get true "LTE" speed. Is to stop at the carrier (AT&T) and have them put you on the "LTE" network. Without this no way to recieve "LTE" speed. You can also call them & tell them you have a new phone and give them the IMEI number. No need for different sims just do there thing. No added cost to plan, just them changing you in the system. And hold on because this thing is Faaaaaaaast!!:
Click to expand...
Click to collapse
Yes u have to have them add lte to your plan. I believe this was discussed in depth a dozen times
You do this only one time rite? After flashing t989 roms you can just enable LTE by editing APN.
lte
Never got it to work on My tmoble roms
I have gotten about 24mbps max with t989 roms i think.
Someone clear me on this.
So if you get a ATT skyrocket, on LTE network.
And you flash it w a Tmobile based ROM you lose LTE connectivity?
I'm curious because, even w a custom ROM i go to about phone shows having LTE network connectivity
Do a speed test, I would say if you got it to work in you got the lte icon your speed is way better you probably got it. I didn't have any luck but that was before I went to at&t and had them change my plan. since then I haven't tried a t mobile rom.
Sent from my SAMSUNG-SGH-I727 using xda premium
skizzz said:
Someone clear me on this.
So if you get a ATT skyrocket, on LTE network.
And you flash it w a Tmobile based ROM you lose LTE connectivity?
I'm curious because, even w a custom ROM i go to about phone shows having LTE network connectivity
Click to expand...
Click to collapse
Yes you will cauz you need pta apn in order to have LTE!
I've seen some similar questions here but none of them could fit my issue. I can't connect on LTE network on any version of CM/PA/etc. I still can send texts and do calls on LTE baseband, but internet only works when I toggle my phone to GSM/CDMA instead of LTE. It worked on the stock ROM and I'm in a place with a good LTE signal, I think there's something with the baseband frequency, probably Brazil's frequency is not available on those ROMs. Can someone help me?
Thanks.
UPDATE: Finally I could fix it. The APN was not properly configured.
airtono said:
I've seen some similar questions here but none of them could fit my issue. I can't connect on LTE network on any version of CM/PA/etc. I still can send texts and do calls on LTE baseband, but internet only works when I toggle my phone to GSM/CDMA instead of LTE. It worked on the stock ROM and I'm in a place with a good LTE signal, I think there's something with the baseband frequency, probably Brazil's frequency is not available on those ROMs. Can someone help me?
Thanks.
Click to expand...
Click to collapse
I'm from Brazil too, but i'm having other problem, with the WiFi, every Custom ROM I flash the WiFi becomes really weak, and when I go back to Stock everything is normal, don't know what to do :/
airtono said:
I've seen some similar questions here but none of them could fit my issue. I can't connect on LTE network on any version of CM/PA/etc. I still can send texts and do calls on LTE baseband, but internet only works when I toggle my phone to GSM/CDMA instead of LTE. It worked on the stock ROM and I'm in a place with a good LTE signal, I think there's something with the baseband frequency, probably Brazil's frequency is not available on those ROMs. Can someone help me?
Thanks.
UPDATE: Finally I could fix it. The APN was not properly configured.
Click to expand...
Click to collapse
I'm having exactly the same issue and also tought it might be related to the baseband frequency (2.6GHz).
Which carrier are you on and which APN configuration change have you made?
Thanks in advance!
UPDATE: TIM Brazil's users: Changed APN to timbrasil.br, Authentication Type to None and Bearer to LTE and worked like a charm.
Hello,
I have no signal, I can't turn on radio in the hidden settings (*#*#4636#*#*) and I can't change preffered network to 2g nor 3g.
I have flashed different radios, flashed several factory images (4.4,5.1.1,5.0) but I have the same problem. One thing though, when I'm on 4.4 it says the radio is on in the hidden settings (still no signal) but I can
t' turn it off. Is this a software or hardware problem? What can I do/what are replacement parts I could buy?
Thanks.
Please anyone? This is very urgent.
When I'm on 5.0 my phone immediatly recognizes my sim card and in the initial setup it can verify my network (don't have a signal afterwards). On 5.1.1 I have to take my sim out and put it back in before it recognizes it and it can't verify in the initial setup (also no signal afterwards).
Same problem here. Tried all radios, all stock versions since 4.4 up to 5.1.1.
I'm beginning to suspect physical damage.
What carrier?
Sent from my Nexus 5 using Tapatalk
I'm in Brazil. Reading other threads, I noticed something: my phone is a D820, versus the international D821. I read that the modems are binary-equal, what determines the supported LTE bands is a configuration in the Qualcomm chipset. In my case, only D821 will support band 7 (which is the local LTE frequency). See: http://www.phonearena.com/news/Differences-between-the-two-Nexus-5-models-D820-and-D821_id48985
You wouldn't by any chance be in an area with the international LTE bands, would you?
Hello,
I have Samsung GS3 verizon SCH-I535 With CM13 installed , works perfectly , APN well configured and i connect with 3g, but i still have a problem.
Yesterday i upgraded to 4G , when i plugged the new 4g sim card and rebooted, i had no Network at all, i couldnt even make calls, so i go to settings ==> Network ====> and selected GSM/WCDMA and the network and 3g worked , if i chose LTE or other options it will switch the network off and wont work.
Please help me guys , what should i do ??!
RashidVet said:
Hello,
I have Samsung GS3 verizon SCH-I535 With CM13 installed , works perfectly , APN well configured and i connect with 3g, but i still have a problem.
Yesterday i upgraded to 4G , when i plugged the new 4g sim card and rebooted, i had no Network at all, i couldnt even make calls, so i go to settings ==> Network ====> and selected GSM/WCDMA and the network and 3g worked , if i chose LTE or other options it will switch the network off and wont work.
Please help me guys , what should i do ??!
Click to expand...
Click to collapse
The 4G signal that the networks worldwide use are not the same, GSM 4G is not the same as CDMA 4G, also, some 4G devices in the past were not true 4G, they used Wimax which is not actual 4G. My point is, the 4G your network uses is probably a different signal type or its bands do not match the bands the device supports. Research the exact signal type and frequency bands that Verizon supports, then research what signal type and bands that your network supports.
Many times I've seen 4G CDMA devices used on other networks and 4G could never be made to work, they were stuck with 3G because the device did not support the 4G type their network uses.
Most devices on other networks but still have 4G can count themselves lucky.
Thanks for your reply,
I flashed this rom (CM13) ; http://forum.xda-developers.com/gal...m-cyanogenmod-13-0-nightlies-verizon-t3269675
my provider is "Djezzy" , and i think its 4g LTE.
RashidVet said:
Thanks for your reply,
I flashed this rom (CM13) ; http://forum.xda-developers.com/gal...m-cyanogenmod-13-0-nightlies-verizon-t3269675
my provider is "Djezzy" , and i think its 4g LTE.
Click to expand...
Click to collapse
You "think", no, don't assume anything, even if your provider uses 4G LTE, if the bands/frequencies of your network are not supported by the device's hardware then it isn't going to work. As I said the first time, you need to do the research to see what bands and frequencies Verizon uses and then do the research to see what bands/frequencies your service provider uses. I mean find the actual values of Verizon's bands/frequencies and the actual values of your networks bands/frequencies, you need to compare them to see if the use the same bands/frequencies, not just whether its 4G or LTE or not. Do you understand what I'm saying?
Also, their may be radio/modem incompatibilities, the radio modem is part of the stock firmware that remains on the device, ROMs are just the system partition and not the whole operating system, software that is under the ROM is still the software the device came with or had before you flashed a custom ROM.
I DO NOT PROVIDE HELP IN PM, KEEP IT IN THE THREADS FOR EVERYONE TO SHARE
does anyone know if the 5g bands are limited by the hardware or software? do i need an in2015/in2025 to work on tmobile or could i get any version and flash it to the proper region?
It's is hardware based and software enabled. One thing doesn't work without the other.
its good but depending on area and if you have root 5gnr isn't enabled at first i had to switch 2g/3g/4g only to make network work stable after i rooted changed database file changed few others network 5g is 5x faster then stock im on global with T-Mobile modem flashed
Best to get that 2015 or the T-Mobile variant. The rest would probably work to some degree, but they'll be missing important bands.