Database Info

Verizon M8 on At&t/Cricket

I have rooted and s-off. Used the guide to enable additional bands. I used NV values 65626 and could get LTE in some areas but not in others. I'm starting to think it's radio related. Any suggestions?

taifuller said:
I have rooted and s-off. Used the guide to enable additional bands. I used NV values 65626 and could get LTE in some areas but not in others. I'm starting to think it's radio related. Any suggestions?
Click to expand...
Click to collapse
what bands, specifically, did you enable?

Bands 2, 4, 5 and 17. I'm located in the Raleigh Durham area of NC. When it was connected to LTE I used the LTE discovery app and confirmed the uplink and downlink freqs. 1900/2100 if memory serves me correctly.

Currently using the VZW M8 on Cricket. I'm getting HSDPA but no LTE.
But I have no complaints. Phone is awesome and mobile data is working flawlessly.

Yes it's radio related. Verizon and ATT do not use all the same frequencies and bands.
http://www.droid-life.com/wp-content/uploads/2015/02/us-wireless-bands.png

verizon to gpe?
taifuller said:
I have rooted and s-off. Used the guide to enable additional bands. I used NV values 65626 and could get LTE in some areas but not in others. I'm starting to think it's radio related. Any suggestions?
Click to expand...
Click to collapse
Hi,
I tried to read any info about it. But I don't know....
Here is my theory: The Google Play edition (GPe) is open to any LTE channels. I know that you can turn the verizon M8 into GPe M8... (I don't know if the phone can operate on Verizon after all :S )
So hopefully that can work, but I NEVER TRIED IT!
So If some GURU can help us that would be grate. And also a "How to" -from the very beginning ( Stock rom, s-on, non rooted, etc) would be nice too.
Thank you
Ps.: I was only modifying Samsung, Sony, Motorola, Zte before. This HTC "magic" is totally new for me

hongkongpheoy74 said:
Yes it's radio related. Verizon and ATT do not use all the same frequencies and bands.
http://www.droid-life.com/wp-content/uploads/2015/02/us-wireless-bands.png
Click to expand...
Click to collapse
You totally missed OP's point. He already enabled the require bands for AT&T LTE.
taifuller said:
Bands 2, 4, 5 and 17. I'm located in the Raleigh Durham area of NC. When it was connected to LTE I used the LTE discovery app and confirmed the uplink and downlink freqs. 1900/2100 if memory serves me correctly.
Click to expand...
Click to collapse
I am in Virginia. Right now using a stock Verizon M8 and I do get AT&T LTE signal( download speed is around 10M, upload is 7M. Phone info said the network is LTE).
I guess my area using band 4 for AT&T LTE.
I am considering enable band 17. If you are available, maybe you should share some thoughts of your Band-unlockin process and your LTE signal situation.
Thank you.

laofan said:
You totally missed OP's point. He already enabled the require bands for AT&T LTE.
I am in Virginia. Right now using a stock Verizon M8 and I do get AT&T LTE signal( download speed is around 10M, upload is 7M. Phone info said the network is LTE).
I guess my area using band 4 for AT&T LTE.
Your speeds are better than my VZW speeds here.
I am considering enable band 17. If you are available, maybe you should share some thoughts of your Band-unlockin process and your LTE signal situation.
Thank you.
Click to expand...
Click to collapse
I went to an ATT store inquiring about moving from VZW. They said my M8 would NOT work on their network. Who can i contact at ATT to get the straight scoop and move? I am in Wilmington NC.

Very competitive Verizon MVNOs are starting to emerge, have you compared coverage in your area? I'm on ROK Mobile and it's freaking awesome.

schneid said:
I went to an ATT store inquiring about moving from VZW. They said my M8 would NOT work on their network. Who can i contact at ATT to get the straight scoop and move? I am in Wilmington NC.
Click to expand...
Click to collapse
Most of the ATT guys are clueless, not matter they are in store or over the phone. Just ignore them.
All you need is get an att nano sim card, put it in your verizon m8. Boom! You could text and call now!
And then you need to edit APN settings to get data working. Go to settings, Mobile data, Network settings, GCM/UMTS Options, Access point names, and add a new APN:
Name ATT Phone
APN phone
Proxy Not set
Port Not set
Username Not set
Password Not set
Server Not set
MMSC http://mmsc.mobile.att.net
MMS proxy proxy.mobile.att.net
MMS port 80
MCC 310
MNC 410
Authentication Type None
APN type default,mms,supl,hipri
APN protocol IPv4
Bearer Unspecified
save this APN and select it to use. Wait 30 sec to 1 minutes, Boom, you would have H+ or 4G LTE depending your location. For most area you would get H+.
You don't even need to root !

im on edge slow slow slow

I get HSPA+ on my stock M8. My APN is "phone"

I have GoPhone account with AT&T and I get LTE in some areas, nothing done to my phone, stock Verizon m8, apn set to nxtgenphone , I get HSPA most of the time, but I do get LTE in some locations here

laofan said:
You totally missed OP's point. He already enabled the require bands for AT&T LTE.
I am in Virginia. Right now using a stock Verizon M8 and I do get AT&T LTE signal( download speed is around 10M, upload is 7M. Phone info said the network is LTE).
I guess my area using band 4 for AT&T LTE.
I am considering enable band 17. If you are available, maybe you should share some thoughts of your Band-unlockin process and your LTE signal situation.
Thank you.
Click to expand...
Click to collapse
I did not miss the OPs point. Reread my post. he's trying to enable bands on a phone which radio does not support it. He asked if it was a radio issue. YEP.

hongkongpheoy74 said:
I did not miss the OPs point. Reread my post. he's trying to enable bands on a phone which radio does not support it. He asked if it was a radio issue. YEP.
Click to expand...
Click to collapse
So happy to see that you are replying back to me after two years.

Photon Q works on T-Mobile LTE

Hi All,
I was recently on holidays in the USA which using my Photon Q sim modded by Cornholio I was able to get LTE on T-Mobile. This was only in areas where they have re-farmed 1900 mhz (band 2) to LTE. I'm not sure if this makes a difference but I also changed nv 6828 for 1900mz bands 2 & 25. So in theory LTE should work on AT&T where they use 1900 mhz band 2 LTE. AT&T was was coming up a lot when I was doing a network search. It is listed as AT&T 4g.
Regards,
Sebastian

cyri2 said:
So in theory LTE should work on AT&T where they use 1900 mhz band 2 LTE. AT&T was was coming up a lot when I was doing a network search. It is listed as AT&T 4g.
Click to expand...
Click to collapse
Hope you enjoyed your visit...
I've never played with any of this, but I'm an AT&T user in US... what exactly are you saying to try setting in the phone in order to try to get LTE on AT&T.... and if there's any way to know if AT&T is using that band in a particular area?

enigma9o7 said:
Hope you enjoyed your visit...
I've never played with any of this, but I'm an AT&T user in US... what exactly are you saying to try setting in the phone in order to try to get LTE on AT&T.... and if there's any way to know if AT&T is using that band in a particular area?
Click to expand...
Click to collapse
Hi,
This is what I did with my phone to get LTE was the following: Using the phone dialer
*#*#4636#*#* and in phone information menu change data to LTE/GSM/WCDMA
##3282# and in the LTE menu make sure that you have LTE as enabled, if not edit the value to enabled. You need to use the msl code for your phone to do this. I have an app to do this if you need.
To see if AT&T 1900 LTE is available in your area, go into settings, mobile network settings, network operators and choose the option search networks. A list of available networks will come up. If you have AT&T 1900 LTE band 2 available, this will be listed as AT&T 4G. Tap on this and you should be able to get LTE. The Photon Q lists LTE as 4G in the status bar on the top of the phone.
Hope that this is some help

[Q] VZW / build.prop

Hello all,
I am having some difficulties getting my LG-H830 working on Verizon. The phone is carrier unlocked, stock rooted and BL unlocked. I've gone through the hidden menu and when I set LTE band to 2 or 4, it says SUCCESS. I've activated the SIM on another phone before moving over to the G5 and it shows up on my account.
I get bars but no LTE symbol, so I can't make calls via VoLTE (voice over LTE) and I don't have data. When I had it working on T-Mobile, there was an LTE symbol so I know it has LTE modem. I'm wondering if I need to modify build.prop to work on bands 2,4?
FYI on the lockscreen top left it says searching. A bit odd since I have four bars.
Any ideas? Appreciate any feedback!
I'm out of a phone until its working.
EDIT/UPDATE:
I'm trying to find the proper build.prop settings to get LTE working. Currently I am looking at my VZW LG G3 build.prop, however I've yet to change any settings that gets the LTE icon showing up. I've replaced the apns-conf.xml file from the G3 in order to have the proper APN configuration.
Things I'm trying (for the most part):
ro.build.target_operator=TMO (as VZW I do not get any service, with TMO it says Verizon Wireless and I get bars, but no LTE)
ro.telephony.default_network=10 (was 9)
telephony.lteOnCdmaDevice=1 (was commented out)
ro.cdma.home.operator.numeric=311480 (didn't exist)
ro.cdma.home.operator.alpha=Verizon (didn't exist)
gsm.sim.operator.alpha=Verizon (didn't exist)
gsm.sim.operator.numeric=311480 (didn't exist)
gsm.operator.alpha=Verizon (didn't exist)
gsm.operator.numeric=311480 (didn't exist)
persist.radio.volte.dan_support=true (didn't exist)
ro.afwdata.LGfeatureset=VZWBASE (was TMUSBASE)
persist.lg.data.fd=0 (was -1)
ro.com.google.clientidbase.ms=android-verizon (was android-hms-tmobile-us)
ro.com.google.clientidbase.am=android-verizon (was android-tmobile-us)
ro.com.google.clientidbase.yt=android-verizon (was android-om-lge)
I can also go into the hidden menu. Attached is what shows after selecting LTE only for the RAT.

Verizon LTE uses band 2/4 in your area for LTE and not B13?

autoprime said:
Verizon LTE uses band 2/4 in your area for LTE and not B13?
Click to expand...
Click to collapse
@autoprime thank you very much for your reply.
The device supposedly doesn't support B13 and VZW in USA uses 2/4/13:
https://www.frequencycheck.com/carr...8-0f71d7675a68/verizon-wireless-united-states
EDIT:
I tried B13 from hidden menu and result was FAIL. B2 and B4 both result in SUCCESS.

jhasty01 said:
@autoprime thank you very much for your reply.
The device supposedly doesn't support B13 and VZW in USA uses 2/4/13:
https://www.frequencycheck.com/carr...8-0f71d7675a68/verizon-wireless-united-states
EDIT:
I tried B13 from hidden menu and result was FAIL. B2 and B4 both result in SUCCESS.
Click to expand...
Click to collapse
correct... H830 does not support Band 13 LTE.
but the reason I asked what I did was... different bands on Verizon are used in different areas. Just because they support B2/4/13 does not mean all 3 are available in all areas. So if you live in a B13 area.. and you don't have a phone with B13 LTE.. then you're not going to get LTE.
So you need to find out which bands are used in the areas you frequent. If you can confirm that B2 or B4 is used in your area then the issue may be something else. But if you only have B13 in your area... nothing you do will make it work on the H830.

autoprime said:
correct... H830 does not support Band 13 LTE.
but the reason I asked what I did was... different bands on Verizon are used in different areas. Just because they support B2/4/13 does not mean all 3 are available in all areas. So if you live in a B13 area.. and you don't have a phone with B13 LTE.. then you're not going to get LTE.
So you need to find out which bands are used in the areas you frequent. If you can confirm that B2 or B4 is used in your area then the issue may be something else. But if you only have B13 in your area... nothing you do will make it work on the H830.
Click to expand...
Click to collapse
@autoprime
Thank you for the explanation and my apologies for the delayed response. I'm at work now and my VZW G3 is showing XLTE Band 4, CDMA 1xRTT. It is using 311480 as the G5 is configured for. I'll have to install this nice app (LTE Discovery) onto the G5 and compare. If you can think of anything else I may be missing to get LTE rolling on the H830, please let me know.

jhasty01 said:
@autoprime
Thank you for the explanation and my apologies for the delayed response. I'm at work now and my VZW G3 is showing XLTE Band 4, CDMA 1xRTT. It is using 311480 as the G5 is configured for. I'll have to install this nice app (LTE Discovery) onto the G5 and compare. If you can think of anything else I may be missing to get LTE rolling on the H830, please let me know.
Click to expand...
Click to collapse
hmm interesting. have you tried the G5 at work in same location?
I see no reason why LTE on B4 wouldn't work on the H830 as long as the sim slot was unlocked and APN was correct.
Obviously CDMA won't be working on the H830.. nor will Verizon's VoLTE... though you could make calls while on LTE using Google Voice or other 3rd party VOIP apps.
Unfortunately I don't have a Verizon sim I could try to mess with on my H830 to see if I could get it going. Just be sure to confirm the exact area you are testing the H830 in is B4 (I get B12 if I walk into my back yard... but in front yard I get B4).. sim slot is unlocked and the proper APN is showing up as selected in the APN menu.
Hopefully someone in the same situation as you will come along and shed more light on this. Sorry I can't be more help. If I think of anything else I'll come back and mention it.

autoprime said:
hmm interesting. have you tried the G5 at work in same location?
I see no reason why LTE on B4 wouldn't work on the H830 as long as the sim slot was unlocked and APN was correct.
Obviously CDMA won't be working on the H830.. nor will Verizon's VoLTE... though you could make calls while on LTE using Google Voice or other 3rd party VOIP apps.
Unfortunately I don't have a Verizon sim I could try to mess with on my H830 to see if I could get it going. Just be sure to confirm the exact area you are testing the H830 in is B4 (I get B12 if I walk into my back yard... but in front yard I get B4).. sim slot is unlocked and the proper APN is showing up as selected in the APN menu.
Hopefully someone in the same situation as you will come along and shed more light on this. Sorry I can't be more help. If I think of anything else I'll come back and mention it.
Click to expand...
Click to collapse
You don't think that VoLTE will work? There is an option for it and Verizon supports it (per store manager in my area).

jhasty01 said:
You don't think that VoLTE will work? There is an option for it and Verizon supports it (per store manager in my area).
Click to expand...
Click to collapse
Verizon VoLTE may only works on whitelisted Verizon devices. And T-Mobiles VoLTE is custom for their network. If there is any sort of VoLTE standard.. the US carriers seem to not be following it.

Someone needs to disable the modular compatibility check so we can swap the USB/speaker for the vzw one. I have a hunch the radios for the g5 are in this part. I had a problem getting a signal one day after a battery swap and turns out I didn't have the module in all the way or dirt got in it. But this led me to a vzw shop were I asked to swap the display models module out with mine and it gave me an error upon boot. So maybe with root someone can figure out how we can swap these around to have a true world phone. The part is cheap on eBay. And maybe it can solve our problem. Mine is T-Mobile.
Sent from my LG-H830 using XDA-Developers mobile app

PLEASE HELP! Network no longer connecting on new Moto G3 TE (merlin)

Please help! Network issues - will *not* connect at all anymore!
I just bought this phone (XT1557) just over a week ago. I unlocked it and installed TWRP then made a backup. Then I installed AOSP Extended and was enjoying learning about it and using the phone. I'm using H20 Wireless (they use AT&T network). Everything seemed to be great for about a week and I was very happy with my new phone. However, just yesterday, while traveling in the US and using the phone (for maps/navigation, gasbuddy, facebook, etc. - it was also charging from a car charger at the same time) we hit a patchy spot in the signal and I couldn't get the network to reconnect. After a few minutes (still traveling) for a split second the network icon flashed as having a decent signal, but then it went off again and *NEVER CAME BACK*! Nothing I've done since then has been able to get the network to come back on my phone.
Here's what I've tried:
* toggling airplane mode, toggling preferred 4G/LTE, or 3G, or 2G
* Reboot;
* safe mode;
* tried sim in the other sim card slot
* tried another sim in my phone that was currently working at the time in Moto G 2nd gen, in both sim slots - still not working in my phone; tried my sim in that phone and it's working in that phone (so not a sim card problem)
* tried *#*#4636#*#* - still shows "emergency calls only" and the signal strength does fluctuate depending on where I move around (see screenshots), tried bunch of different radio bands, tried turning off and on radio power, tried changing preffered network type (to lots of different ones)
* tried dirty flashing AEX again and newest GApps
* tried clean flashing AEX and newest GApps
* tried clean flashing Lineage OS 14.1 and newest GApps.
* flashed only the original modem firmware from MM stock rom (provided here at xda)
* restored my nandroid backup to stock rom (6.0.1)
NONE of these things have worked! PLEASE help! Is there any way I can test this to see if it's a hardware issue? (Though it seems strange for hardware to fail after just 1 week... and there's no warranty since I unlocked it, but I bought it new on ebay anyway, so no warranty.)
Any help you can give will be so appreciated. Nothing else on the phone seems to have a problem (wifi, etc., all seem to be working). The phone didn't even act weird when the network stopped working -that was the only thing. Everything else on the phone still acted like normal without even a reboot. If you've ever even heard of this happening, please let me know. I can't find any other info on what to do on the internet and I've searched all over. If you can help me (or even try), I'll give you so many thanks, as many as it lets me give on here! Thank you for even considering helping me - I really want this to work!

I don't know for sure if this is the case, but here is a possibility...
There is no 2G (GSM) service on H2O/AT&T, period, it was shutdown in December 2016.
For 3G AT&T uses 850Mhz & 1900Mhz HSPA(+), but it varies which one based on licensing and network saturation, among other things... Not everywhere has both (in fact, both only appear in select high-penetration markets)... the XT1557 supports HSDPA 850/900/2100, note that 1900Mhz is NOT a supported frequency, yet it is quite common in AT&T's network... It is a possibility that you left an area with 850Mhz service, and entered an area with 1900Mhz service and now have no service, literally. The service is there for AT&T/H2O, but your phone doesn't support the frequency in that area.
LTE bands support by the XT1557 are LTE band 1(2100), 3(1800), 7(2600), 8(900), 28(700), 40(2300), but none of those are compatible with AT&T.
It is entirely possible that you just don't have service, because there is NO service your phone is capable of getting because either that frequency isn't available or it's used by another carrier in that area (and H2O has no roaming from AT&T's core network to partner networks like AT&T post-paid service).
Just a possibility... but basically you have a device that only supports a portion of the network you are trying to use.

acejavelin said:
I don't know for sure if this is the case, but here is a possibility...
There is no 2G (GSM) service on H2O/AT&T, period, it was shutdown in December 2016.
For 3G AT&T uses 850Mhz & 1900Mhz HSPA(+), but it varies which one based on licensing and network saturation, among other things... Not everywhere has both (in fact, both only appear in select high-penetration markets)... the XT1557 supports HSDPA 850/900/2100, note that 1900Mhz is NOT a supported frequency, yet it is quite common in AT&T's network... It is a possibility that you left an area with 850Mhz service, and entered an area with 1900Mhz service and now have no service, literally. The service is there for AT&T/H2O, but your phone doesn't support the frequency in that area.
LTE bands support by the XT1557 are LTE band 1(2100), 3(1800), 7(2600), 8(900), 28(700), 40(2300), but none of those are compatible with AT&T.
It is entirely possible that you just don't have service, because there is NO service your phone is capable of getting because either that frequency isn't available or it's used by another carrier in that area (and H2O has no roaming from AT&T's core network to partner networks like AT&T post-paid service).
Just a possibility... but basically you have a device that only supports a portion of the network you are trying to use.
Click to expand...
Click to collapse
Wow, this info could be SOOO helpful! I know this is only a possibility, but it gives me a glimmer of hope when I thought the phone was doomed/broken somehow. I did know my phone was only partially supported (like I knew I probably couldn't get LTE in the US), but I didn't know what all that meant in terms of the other bands. I bought the phone for primary use in Madagascar (which my phone appears to cover all the bands used in Madagascar) but I won't be back there until September, so I'm using the phone in the US in the meantime.
Even though I considered my phone/SIM might not be compatible with the local network, I figured that couldn't be the case since there was clearly a signal in the Moto G2 XT1068 (Titan). However, with what you explained, that might explain some other anomalies. My Titan is also a phone made for international use (where I've used it for years in Madagascar and South Africa and it works great), but when traveling here in the US, I've noticed some anomalies that your explanation might explain (assuming the Titan might also have limited frequencies in use by AT&T/H2O in various parts of the US). For example, in Alaska,there was a time when in southern Alaska (inside passage) my Titan worked great, voice/data, everything (even in some way out of the way places)... then later in central Alaska my wife's phone (an old AT&T phone with a post-paid AT&T sim) got a data signal, and my Titan got a voice signal but no data. It was strange. Didn't work in some airports along the way either (I don't remember which ones, maybe Chicago). It wasn't until we were back in St Louis that the data started working on my Titan right away again, no problem. I figured it was some strange glitch of the OS (CM 13.1) in how it searched/recognized the local network. But maybe it was a limit in the phone's available bands in those regions of the US?
Then again, after I got the new XT1557 (just over a week ago), I transferred my wife's AT&T postpaid SIM to my old titan (XT1068). It was working great, but I never thought to check her mobile data away from wifi (just got busy and never thought to check). At the same time we hit the spotty network connection while travelling 2 days ago (northeastern Missouri, the network was spotty and cutting out on both our phones), that was when my signal went out for good and I saw that hers (AT&T postpaid but now in a Titan XT1068) didn't have a data signal when her network/voice signal came back. That made it very difficult to navigate, so we stopped and refreshed our maps at public wifi. I thought maybe I just needed to update the APN with AT&T, but when I manually input the info they gave me, it still didn't give me a data signal (on the Titan). Now we're in the Des Moines, Iowa area and I'm experiencing everything I've written about with my phone having never recovered a network signal. However, the one anomaly is that, even when I put my H20 sim back in my Titan XT1068 (which I thought was always working in the past, minus that anomaly from the Alaska trip) it gets a good voice signal but still no data signal, just like my wife's prepaid AT&T never got a data signal (that I could see), and even though I know which APN settings to use for H20. I've similarly been beating my head in over the titan's lack of data signal since I refreshed the OS (now on Lineage OS 13.1) since it means we have 2 phones with us on this trip, neither able to get data since leaving northeastern Missouri and mine even worse getting no voice signal at all.
But maybe it means my Titan XT1068 also has limited bands that aren't covered by AT&T/H20's data here even though it's covered by their voice?
The info you've provided so far is excellent. Can you provide similar info about the XT1068's available bands? (I'm not sure where to find all that - I found the original info about XT1557 in the wikipedia page, but Moto G 2nd gen doesn't seem to list the bands specifically. I also don't know where to look for AT&T's specific bands and/or coverage map that might indicate where they have coverage with each band.) If you can provide any of that info it would be so great! But for now, you've extended my hope for my phone. We'll be in Minneapolis area in a few days, so maybe I can try again there. Then we'll be back in St Louis area (where it was working great previously) in just over a week. So at least I'll hold out my hope until then and maybe I'll discover this just isn't the best travel phone for northern US (or other parts of the US). Still, I can't thank you enough for the hope you've given me, even if it is *just* a possibility. It does seem to explain the circumstances.
Sorry for the long story! I just wrote to show that your explanation might really fit well! Your info was so helpful! Please follow-up to tell me if you think the extra info I gave confirms what you wrote. Please also help me find a coverage map for AT&T where I can see where in the US they use specific frequencies. If you can do that for me. Thanks again for being so helpful and explanatory!

@madagascaradam Search by model and then and find the GSMArena page for the device, under the Network section click Expand...
2G bands GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands HSDPA 850 / 900 / 1700 / 1900 / 2100
Speed HSPA 21.1/5.76 Mbps
GPRS Yes
EDGE Yes
Click to expand...
Click to collapse
So the Moto G2 you have supports the proper HSPA (but hot HSPA+) bands for all AT&T's 3G frequencies.
Remember that prior to December of last year, likely when you were referencing your Alaska trip, there was AT&T 2G/Edge service nationwide but that has since been shutdown and within the next 2-3 years all 2G GSM and CDMA service in the US will be shutdown from all carriers.
And I used H2O for quite a while, use this APN (there are lots of older settings out there, they don't work quite right, but this is current as of a month or so ago at least):
Name: H2O Wireless
APN: prodata
MMSC: http://mmsc.mobile.att.net
MMS Proxy: proxy.mobile.att.net
MMS Port: 80
MCC: 310
MCN: 410
Authentication Type: Not set
APN type: default,mms,supl,hipri,fota
APN Protocol: IPv4
APN roaming protocol: IPv4
everything else blank, not set or none.

@acejavelin You were totally right! In Minneapolis area I usually had a signal, but not much outside the area. In Iowa no signal at all. But once I got back towards central Missouri the signal has been working great again. So obviously ATT has some regions that use 850 (like in the south) and others further up north that seem to only use 1900 which isn't supported by my phone (XT1557). So, that's not super great for using my phone in the US, but at least I know it's not a problem with my phone.
I also found this map (older, from 2008) which shows where AT&T had 850 MHz frequency and where it had 1900 MHz frequency. It roughly corresponds to my experiences so I definitely think it all adds up. http://www.cellularmaps.com/att_850_1900.shtml
Again, thanks so much for your help!

LTE issues with AT&T?

Hi everyone,
I'm having a couple of issues with my H830 that I'm trying to clear up.
1. Besides having the "Device Unlock" app showing up on your phone, how else can you tell if your phone is actually still carrier locked? I ask because I purchase mine used and it was locked. I did not insert a SIM, ran the unlock app, did a permanent unlock attempt, and it appeared to work. After I completed that, I downgraded, rooted, and updated to the current 20n. I had a few unrelated issues and decided to unroot/lock bootloader/reflash to stock. After I got things back to 100% stock everything, I show the "Device Unlock" app again. However, my SIM is Straight Talk AT&T and its working (mostly, that's the next question). Calls work, messages work, and data (mostly). If I was truely still carrier locked, wouldn't this not happen? Is there a warning I should be getting?
2. I believe I've seen others who have experiences issues when using an H830 with Nougat on AT&T networks, something about Band 17 being broken/disabled. Regarding my current situation from question 1, data is acting weird. If I leave the network mode setting on ""GSM/WCDMA/LTE auto", I seem to get a trickle of data - emails seem to come through, and little bits of websites come through. If I switch to "GSM/WCDMA auto" like I've seen listed in other places, data seems to work as you'd expect other than being on a slower connection. Has anyone else had this problem and resolved it?

sorry, looks like i posted in the wrong board. could a mod maybe move this to "Questions & Answers" board?

As an update, if anyone cares - I've managed to use the phone on multiple different carriers between US, China, and Taiwan. My issue here in the US is due to the network mode - I guess the band AT&T uses around here is not supported by the phone currently.

sqkid89 said:
As an update, if anyone cares - I've managed to use the phone on multiple different carriers between US, China, and Taiwan. My issue here in the US is due to the network mode - I guess the band AT&T uses around here is not supported by the phone currently.
Click to expand...
Click to collapse
If you have an H830 that is an Tmobile Specific G5
ATT version is H820
Tmobile uses this channels or Freq bands
Freq Band
1900 MHz 2
1700/2100 MHz 4 AWS
850 MHz 5
700 MHz 12
600 MHz 71
----------------------------------------------------
ATT uses
LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 9(1800), 17(700), 18(800), 19(800), 20(800), 28(700), 29(700)
38(2600), 39(1900), 40(2300), 41(2500)
the H830 dont have as many bands as ATT needs , so when there is no ATT LTE bands your phone switches to 2g hence slowwww data speed
If you want full speed on ATT network, get an H820
i do not fully get why you want to use a Tmobile headset on the ATT network
Hope this little explanation helped you
Max.

sqkid89 said:
Hi everyone,
I'm having a couple of issues with my H830 that I'm trying to clear up.
If I switch to "GSM/WCDMA auto" like I've seen listed in other places, data seems to work as you'd expect other than being on a slower connection. Has anyone else had this problem and resolved it?
Click to expand...
Click to collapse
So I to am also using a using an "unlocked" T-mobile Lg G5 with an AT&T StraightTalk Sim from the Bring Your Own Phone Package which has been an absolute nightmare. Love the phone but not the data problems connection problems ...even been ridiculed by an iphone x enthusiast that is in your face annoying about the iphones. I wanna root, fix problems, and show him what a real operating system can do . :highfive:
---------- Post added at 08:10 AM ---------- Previous post was at 08:05 AM ----------
maxolini said:
If you have an H830 that is an Tmobile Specific G5
ATT version is H820
Tmobile uses this channels or Freq bands
Freq Band
1900 MHz 2
1700/2100 MHz 4 AWS
850 MHz 5
700 MHz 12
600 MHz 71
----------------------------------------------------
ATT uses
LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 9(1800), 17(700), 18(800), 19(800), 20(800), 28(700), 29(700)
38(2600), 39(1900), 40(2300), 41(2500)
the H830 dont have as many bands as ATT needs , so when there is no ATT LTE bands your phone switches to 2g hence slowwww data speed
If you want full speed on ATT network, get an H820
i do not fully get why you want to use a Tmobile headset on the ATT network
Hope this little explanation helped you
Max.
Click to expand...
Click to collapse
I am using the at&t sim cause straighttalk suggested it and tmobile has horrible coverage is iowa. you cant fine a tmobile dealer for 50 miles in every direction of me.

maxolini said:
If you have an H830 that is an Tmobile Specific G5
If you want full speed on ATT network, get an H820
i do not fully get why you want to use a Tmobile headset on the ATT network
Hope this little explanation helped you
Max.
Click to expand...
Click to collapse
I'm well aware there are differences in bands; my area apparently doesn't use the same 4g bands as ATT. In many areas, TMobile does, so its not an issue. If you want a G5 that could be unlocked, rooted, and run a custom OS without much trouble, H830 is the way to go. I just wanted to make sure others looking to do the same didn't think they got a bad or locked phone.

Anyone in or around new york using it?? Do you get LTE and 3g?

OP, I don't seem to understand your issue or situation. I will assume you experience poor connectivity with your H830 model on AT&T including intermittent LTE drops, losing LTE after calls, 3G/H+ only, and poor service/coverage. AT&T white-lists devices which can use LTE on their network, and while they may connect, they will get dropped to 3G/2G GPRS after a while. These white-listed devices ONLY include AT&T models of phones, and SOME unlocked phones. This is an issue many OnePlus, Nexus, and Huawei users experience with AT&T. Even though device is unlocked, LTE is gone after a while or never loads. Some have suggested to call AT&T or chat via tech support to whitelist your IMEI on their system, which will take a while to reach the correct person. What I ended up doing was switching to T-Mobile from my MVNO TracFone because they told me AT&T claimed my device was not capable of LTE (These included: G4 H811, G5 RS988, and G5 H830). As for band compatibility, it should not be an issue. AT&T supports bands 2, 4, and 12/17 (29 & 30 are rare), they just added band 12 compatibility 1-2 years ago to gain more customers from T-Mobile but it's working against them because of their LTE whitelist.

maxolini said:
If you have an H830 that is an Tmobile Specific G5
ATT version is H820
Tmobile uses this channels or Freq bands
Freq Band
1900 MHz 2
1700/2100 MHz 4 AWS
850 MHz 5
700 MHz 12
600 MHz 71
----------------------------------------------------
ATT uses
LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 9(1800), 17(700), 18(800), 19(800), 20(800), 28(700), 29(700)
38(2600), 39(1900), 40(2300), 41(2500)
the H830 dont have as many bands as ATT needs , so when there is no ATT LTE bands your phone switches to 2g hence slowwww data speed
If you want full speed on ATT network, get an H820
i do not fully get why you want to use a Tmobile headset on the ATT network
Hope this little explanation helped you
Max.
Click to expand...
Click to collapse
Thank you for that data, i did not know this. I will be switching back to a Tmobile MVNO next month. I am with Red Pocket so I can choose either carrier.
I was at a restaurant yesterday and my LTE was SUPER slow and I was wondering why it is slow sometimes and fast other times even with full bars (strong signal)

patato21 said:
OP, I don't seem to understand your issue or situation. I will assume you experience poor connectivity with your H830 model on AT&T including intermittent LTE drops, losing LTE after calls, 3G/H+ only, and poor service/coverage. AT&T white-lists devices which can use LTE on their network, and while they may connect, they will get dropped to 3G/2G GPRS after a while. These white-listed devices ONLY include AT&T models of phones, and SOME unlocked phones. This is an issue many OnePlus, Nexus, and Huawei users experience with AT&T. Even though device is unlocked, LTE is gone after a while or never loads. Some have suggested to call AT&T or chat via tech support to whitelist your IMEI on their system, which will take a while to reach the correct person. What I ended up doing was switching to T-Mobile from my MVNO TracFone because they told me AT&T claimed my device was not capable of LTE (These included: G4 H811, G5 RS988, and G5 H830). As for band compatibility, it should not be an issue. AT&T supports bands 2, 4, and 12/17 (29 & 30 are rare), they just added band 12 compatibility 1-2 years ago to gain more customers from T-Mobile but it's working against them because of their LTE whitelist.
Click to expand...
Click to collapse
Sorry for the repeat delayed responses, been away and not getting alerts.
I had a few issues to begin with that were hard to determine due to multiple issues/changes/whatever. Normally I try to do one thing at a time, but I messed that up for myself. Between forum searches are real world testing, I was able to figure them out, so putting them all in one place may be helpful to someone else.
1. I had SIM unlocked my phone prior to downgrading and trying out custom roms. When I wasn't getting LTE, I thought I may have screwed something up and returned everything back to stock. In the process, the "SIM Unlock" app came back and I assumed I may have somehow relocked things. Turns out that's not the case, as I've used an AT&T sim from Straight Talk ever since and others for work in both China and Taiwan. I'd love to get rid of some of the LG/T-mobile bloatware, but I fear breaking anything if I remove this app, so I'll just leave well enough alone.
2. LTE - I was getting no data use at all originally. I couldn't confirm if this was due to a defective phone, being SIM locked, or something else. On my business trips overseas, I was able to get LTE, so it appears to be the band/whitelisting issue as you and others have mentioned. In order to semi-solve my issue, I switched my Network Mode (Settings > Connectivity > More > Mobile Networks) to "GSM/WCDMA auto". I don't get LTE speeds, but 4g works well enough for me as-is. If I ever get around to it, I'll just snag a new Straight Talk sim for t-mobile (although I get shivers any time I even think about having to deal with their customer service department)