The hack to enable full gsm support also disables 4g/lte. Is there a way to keep it enabled for use on t-mobile? I can't find anything new on the prop.build edits, or specifically what each modified line does.
AFAIK, Tmobile uses a completely different band for their "4G", which would explain why 4G is disabled...
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I tried searching it, but I kept finding it for other phones and then answers that did not fit what I have. The most common answer is, if it has a sim card, it is GSM. Sprint is CDMA though, so is it CDMA and GSM? When I took the SIM card out, it said that I would not be able to use 4G LTE without the SIM, but I still had full bars, so does it use GSM for 4G, but CDMA for 2G (calls and sms). I was told that the Google PE RUU did not work on my phone because it only works on GSM, but then when I ran MSL finder, it told me it had no MSL (ie not a CDMA phone) and I have en IMEI, not an ESN.
This should be in q&a
If you're on Sprint or Verizon, you're using a CDMA carrier. Since CDMA is too old to support LTE, they used the SIM card to access access GSM technology (LTE) To keep up to date with the new carriers that are running insane download/uploading speeds using LTE.
djpabz23 said:
If you're on Sprint or Verizon, you're using a CDMA carrier. Since CDMA is too old to support LTE, they used the SIM card to access access GSM technology (LTE) To keep up to date with the new carriers that are running insane download/uploading speeds using LTE.
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Got it...I was looking at the some hidden menus and I found the section to choose GSM/WCDMA.CDMA/LTE and some other few options. Thanks for the clarification.
jobzombi said:
Got it...I was looking at the some hidden menus and I found the section to choose GSM/WCDMA.CDMA/LTE and some other few options. Thanks for the clarification.
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Yup, if you choose GSM/UMTS, you won't be able to receive data at all since Sprint isn't a GSM carrier.
djpabz23 said:
Yup, if you choose GSM/UMTS, you won't be able to receive data at all since Sprint isn't a GSM carrier.
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On that note, it has several options, including CDMA only, GSM only, and then gsm/cdma/wcdma/lte (ie all of them). Is it prudent to just leave it on all, or since I am going to use it on Verizon and/or sprint/ting, just leave it cdma/wcdma/lte? If I choose the catch all one that includes gsm, will it affect the phone negatively, as in extra battery usage, overheating, no signal, etc?
jobzombi said:
On that note, it has several options, including CDMA only, GSM only, and then gsm/cdma/wcdma/lte (ie all of them). Is it prudent to just leave it on all, or since I am going to use it on Verizon and/or sprint/ting, just leave it cdma/wcdma/lte? If I choose the catch all one that includes gsm, will it affect the phone negatively, as in extra battery usage, overheating, no signal, etc?
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If you switch to CDMA Only, you're gonna get a much longer battery life than if you were using CDMA/LTE since your LTE service will be disabled. This means that you will only get 3G but your battery life will last longer since LTE requires more power than 3G
Hello, I have a AT&T MB886 unlocked flashed with LiquidSmooth 4.nightly running LP. I have a T-mobile business line which includes roaming...
My question is how do I get the phone to be more aggressive at picking up other carriers? When I'm in my local town, service is great, but once I get outside of town, the options change to AT&T and other random carriers. If I manually select another carrier, it will roam just fine... however it doesn't do it automatically. I have roaming turned on in the settings, and I checked the build.prop to make sure it was enabled there also. Have I been too spoiled with CDMA roaming just working quickly or am I missing a setting somewhere?
Thanks!
Hoping I can get some help here as I've been working on this for about a month now. I've seen quite a few people with this same problem but found no solutions so far. So I'm trying to modify stock and custom ROMs and stock firmware to work on my G900P. I'll upload the resulting files to share with others who need them. Not looking to be spoon fed, just looking for some guidance.
I bought a Galaxy S5 from a Canadian shop on Ebay. It's a G900P, from Sprint. I'm on Petro Canada Mobile (Rogers) and the stock G900P firmware won't allow me to make calls, text, or use data. It also has all the Sprint bloatware, which I want to get rid of. I've rooted the phone and flashed some ROMs (SuperLite and S5 DreamUX A7 V2) and they do work, albeit in a limited way. With these ROMs I can make calls, text, and use data, but I can not get Rogers higher bands because the phone seems to be stuck on the CDMA (all the firmware and ROMs I've used all use CDMA in the code of the files) settings or some other issue, (most likely through CSC files and build.prop) and can not change to APN protocols to enable IPv4/IPv6 (the option is on IPv4 and greyed out so I can't change it. My carrier uses GSM (850/1900 Mhz, GPRS, Edge), UMTS (B2 1900 PCS, B5 850, 3G, HSPA+ 3.5G ) , and LTE (B4 1700/2100 AWS 1, B7 2600, B17 700 bc). I've spoken with a tech and they said the G900P is compatible will all the bands except the LTE bands. They never mentioned whether this was due to firmware or hardware restrictions.
I've played with the build.prop files, and the Sprint CSC files but nothing has worked so far. So what I'd like to do is modify either the GP900W8 firmware to be compatible with the G900P phone, or the G900P firmware to be compatible with the carrier. If this isn't possible I'd like to customize an existing ROM to do the same. From what I've learned so far it seems I need to modify the build.prop and CSC (and possibly other files) to use the bands my carrier uses instead of the CDMA bands, but I haven't used the correct code or modified the correct lines, or missed something in another file, etc.... I'd also like to try and get this phone to be able to use the LTE bands if possible.
Any help with this project would be greatly appreciated. Thanks in advance.
P.S. If this isn't possible and someone knows of a ROM or firmware I can use on my carrier and get the higher bands could you please let me know. I'm still gonna work on this project, but would like to use my phone while I do it LOL.
https://forum.xda-developers.com/galaxy-s5/general/how-to-add-rf-lte-frequency-bands-to-t2886059
When I'm calling someone and my phone switches from 3G to 2G due to better signal, the audio quality drops to standard quality, although my provider supports HD Voice on GSM as well.
My goal is to avoid this, by enabling the feature for GSM. The only problem is, I haven't found a way to do it, yet.
WB-AMR can be changed via the *#0011# Service-menu, but this only affects the UMTS setting not the GSM one.
WB-AMR can also be set by the CSC's customer.xml, but I can't seem to find a variable to do it for GSM.
My guess would be directly editing the modem and its variables via ADB, the file system or something like this, if that's possible.
Do you have an idea where to start?
DokiRenault said:
When I'm calling someone and my phone switches from 3G to 2G due to better signal, the audio quality drops to standard quality, although my provider supports HD Voice on GSM as well.
My goal is to avoid this, by enabling the feature for GSM. The only problem is, I haven't found a way to do it, yet.
WB-AMR can be changed via the *#0011# Service-menu, but this only affects the UMTS setting not the GSM one.
WB-AMR can also be set by the CSC's customer.xml, but I can't seem to find a variable to do it for GSM.
My guess would be directly editing the modem and its variables via ADB, the file system or something like this, if that's possible.
Do you have an idea where to start?
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Change your phone S3 isn't compatible
I have tried several US variants (NAO_US and USC_US) of LG V40 firmwares but could not find one that has VoLTE and VoWiFi enabled.
How do you guys get VoLTE and VoWiFi to work? The features worked with AT&T firmware but I can't go back to it anymore.
Hi I got VoLTE working but not VoWiFi, I used a 'UA' KDZ version 20f but i cant remember which carrier. I had previously gone to us unlocked and european versions but these didn't work. Sorry it's not more specific.
I have got both VoLTE and VoWiFi to work on Cricket network. Here is a brief summary of the fun and painful journey.
1. Unlock bootloader then install TWRP and Magisk.
2. Hex edit boot_a partition to turn off verity check. (This step was necessary before step #3 so the /OEM directory can be modified)
3. Edit XML and config files under /OEM/OP/OPEN_US with references to VoLTE and VoWiFi
4. Add new entries to /OEM/OP/OPEN_US/CONFIG/vo_config.XML file with MCC and MNC values of Cricket Wireless. LG totally left out Cricket in the XML file. For larger providers, the entries are there but most have VoLTE set to on and VoWiFi disabled.
No idea why LG would make it so difficult to turn on VoLTE and VoWiFi. With the toggles hidden and default set to off, gaining root access was the only solution.
Hey guys, I've got a quick question, how do I figure out which LTE bands are unlocked my phone, would there be a hardware reason why none of the stated bands on the spec list would work, I'm particularly interested in getting band 3 to work
piemanny said:
Hey guys, I've got a quick question, how do I figure out which LTE bands are unlocked my phone, would there be a hardware reason why none of the stated bands on the spec list would work, I'm particularly interested in getting band 3 to work
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Which version do you have? This link will tell you the LTE bands that are enabled. Click on the model of your variant.
https://www.gsmarena.com/lg_v40_thinq-9300.php
Is band 3 available and active in your area?
One way to confirm it is to download "LTE Discovery" app. It has an LTE log that will show you all the towers your phone have connected to.