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3G on AT&T (US)

So, I got my Touch Pro from Expansys yesterday, and it is a UK model (based on the fact that it came with a European charging plug)... but, I am curious as to why it will only connect to EDGE on AT&T.
As far as I know, AT&T 3G UMTS (WCDMA) uses the 1900 band. When I go in to the phone, then choose menu->options, then go to the "Band" page there are two drop-downs:
Network Type:
- Auto
- GSM
- WCDMA
GSM/UMTS Band:
- Auto
- GSM(900+1800)+UMTS(2100)
- GSM(1900+850)+UMTS(1900+850)
- UMTS(2100+800)
So, this makes me think that setting the GSM/UMTS band to "Auto" or "GSM(1900+850)+UMTS(1900+850)" would make the Touch Pro connect to AT&T's 3G (1900MHz) ... but, it doesn't.
Ideas?

shaunco said:
So, I got my Touch Pro from Expansys yesterday, and it is a UK model (based on the fact that it came with a European charging plug)... but, I am curious as to why it will only connect to EDGE on AT&T.
As far as I know, AT&T 3G UMTS (WCDMA) uses the 1900 band. When I go in to the phone, then choose menu->options, then go to the "Band" page there are two drop-downs:
Network Type:
- Auto
- GSM
- WCDMA
GSM/UMTS Band:
- Auto
- GSM(900+1800)+UMTS(2100)
- GSM(1900+850)+UMTS(1900+850)
- UMTS(2100+800)
So, this makes me think that setting the GSM/UMTS band to "Auto" or "GSM(1900+850)+UMTS(1900+850)" would make the Touch Pro connect to AT&T's 3G (1900MHz) ... but, it doesn't.
Ideas?
Click to expand...
Click to collapse
From what i've read on here is that even if the software allows u to select that within the OS the hardware may either not be installed or not excercised correctly. Thats all i've heard but i'm waiting on the same thing u are

Guys there is already a discussion on this topic HERE.
I'll close this thread so you can carry the discussion on in there.

[Q] GSM 1700/2100 Question

I'm having trouble finding a definitive answer to this so hopefully someone knows about this stuff. My carrier uses SIM technology and it's 3G uses 1700 and 2100 bands. I'm wanting to find out which of the newer/higher end android phones I could use for their service and actually be able to use both bands. Any help would be greatly appreciated! Thanks!

Willieumm said:
I'm having trouble finding a definitive answer to this so hopefully someone knows about this stuff. My carrier uses SIM technology and it's 3G uses 1700 and 2100 bands. I'm wanting to find out which of the newer/higher end android phones I could use for their service and actually be able to use both bands. Any help would be greatly appreciated! Thanks!
Click to expand...
Click to collapse
Those are T-Mobile bands so you are more fortunate than me. You can use the amazing new HTC Sensation with those bands. Unfortunately my carrier, AT&T, doesn't use those bands and I'm not able to yet get a Sensation. You can pretty much choose any T-Mobile phone. They have LG GX2, Samsung Galaxy S 4G and the HTC Sensation and the Sensation is HTC's flagship phone and highly valued.

Like he said, basically any T-Mobile 3G device will work for you.

I notice most of their phones don't have 1700 listed on their bands though. Does that mean I can or can't use them?

Willieumm said:
I notice most of their phones don't have 1700 listed on their bands though. Does that mean I can or can't use them?
Click to expand...
Click to collapse
Yes, you can use them with full 3G speed...4G if your service provides it.
By the way, you'll need to unlock any T-Mobile branded phone. Simple to do just by calling T-Mobile CS for the sim unlock code.

So the phone I buy just needs to have either one of the two 3g bands I take it? I guess I screwed up because I bought an unlocked Inspire off eBay and when I put my sim card in I got no data at all, not even edge. So if I was to find an Incredible S unlocked I could use that correct?

Willieumm said:
So the phone I buy just needs to have either one of the two 3g bands I take it? I guess I screwed up because I bought an unlocked Inspire off eBay and when I put my sim card in I got no data at all, not even edge. So if I was to find an Incredible S unlocked I could use that correct?
Click to expand...
Click to collapse
Well...Edge isn't locked down like HSPA (3G) is. As long as the phone is a GSM version, Edge should work fine, if the service is putting it out. What you likely are needing to do with your Inspire is input the proper APN settings. And also make sure the mobile data is enabled.
Go to "Setting" > "Wireless and Networks" > "Mobile settings" and see if the top box is checked. If not, check it. Then, still in that same menu, go to "Access Point Names" and see what is there. If there isn't an APN there relating to your carrier, make one by tapping the menu button and choosing new APN. Input the correct carrier values from the list in the link below. Once done, tap the menu button and choose "Save". Make sure that new APN you just created is selected...usually a small green dot to the right side of it.
http://forums.pinstack.com/f24/tcp_apn_wap_gateway_port_carrier_settings-360/

I told you wrong for the Inspire about the menu system. I just booted mine up and had a look. You will find the data checkbox in "Settings" > "Wireless and Networks" labeled "Mobile network".

MartyLK said:
Well...Edge isn't locked down like HSPA (3G) is. As long as the phone is a GSM version, Edge should work fine, if the service is putting it out. What you likely are needing to do with your Inspire is input the proper APN settings. And also make sure the mobile data is enabled.
Go to "Setting" > "Wireless and Networks" > "Mobile settings" and see if the top box is checked. If not, check it. Then, still in that same menu, go to "Access Point Names" and see what is there. If there isn't an APN there relating to your carrier, make one by tapping the menu button and choosing new APN. Input the correct carrier values from the list in the link below. Once done, tap the menu button and choose "Save". Make sure that new APN you just created is selected...usually a small green dot to the right side of it.
http://forums.pinstack.com/f24/tcp_apn_wap_gateway_port_carrier_settings-360/
Click to expand...
Click to collapse
The company I'm trying to use this with is called iWireless. They aren't on that list but I had found the apn settings by googling it and I did input them just as you suggested and selected them with the little green dot and no such luck. I even rebooted the phone twice. I'm sad cuz I love the Inspire, I rooted it and put a Sense 3D rom on it that I'm in love with. I want to stay with the carrier though cause they have the cheapest thing around, $50 a month unlimited everything including minutes, data, mms & sms. Can't beat it. But there's not many devices as well supported as the Inspire and I really can't stand anything but HTC after having a Motorola Cliq and Samsung Epic both of which I hated.

Willieumm said:
The company I'm trying to use this with is called iWireless. They aren't on that list but I had found the apn settings by googling it and I did input them just as you suggested and selected them with the little green dot and no such luck. I even rebooted the phone twice. I'm sad cuz I love the Inspire, I rooted it and put a Sense 3D rom on it that I'm in love with. I want to stay with the carrier though cause they have the cheapest thing around, $50 a month unlimited everything including minutes, data, mms & sms. Can't beat it. But there's not many devices as well supported as the Inspire and I really can't stand anything but HTC after having a Motorola Cliq and Samsung Epic both of which I hated.
Click to expand...
Click to collapse
Have you tried these settings: http://forum.xda-developers.com/showpost.php?p=5328920&postcount=255
Or: http://forum.xda-developers.com/showpost.php?p=5531081&postcount=256
Or: http://forum.xda-developers.com/showpost.php?p=5601789&postcount=259

MartyLK said:
Have you tried these settings: http://forum.xda-developers.com/showpost.php?p=5328920&postcount=255
Or: http://forum.xda-developers.com/showpost.php?p=5531081&postcount=256
Or: http://forum.xda-developers.com/showpost.php?p=5601789&postcount=259
Click to expand...
Click to collapse
Yeah I did use those same settings on my Inspire and no such luck. I did just happen to run across this on the iWireless website however.
"Will any 3G GSM phones get 3G speeds on the i wireless 3G network?
No. Our 3G network will only support AWS/UMTS 1700/2100 banded phones. 3G devices that only have the 2100 band will not be compatible on our 3G network."
http://www.iwireless.com/promoform.asp?promo=3G
So am I wrong in taking that to mean that whatever phone I buy actually has to support both 1700 and 2100 bands in order for me to get 3G upload and download speeds? If so my options will be very limited I'm sure. :\

Okay, so from what I've learned between reading and what you've told me and what I know I want I've pretty much come to the conclusion that I'm gonna want an Incredible S or a Sensation as those are pretty much the only HTC phones that appear to cover 2100 (band 1) and 1700/2100 (band 4) which is what I believe that I need. Tell me if you think I'm wrong.

Willieumm said:
Yeah I did use those same settings on my Inspire and no such luck. I did just happen to run across this on the iWireless website however.
"Will any 3G GSM phones get 3G speeds on the i wireless 3G network?
No. Our 3G network will only support AWS/UMTS 1700/2100 banded phones. 3G devices that only have the 2100 band will not be compatible on our 3G network."
http://www.iwireless.com/promoform.asp?promo=3G
So am I wrong in taking that to mean that whatever phone I buy actually has to support both 1700 and 2100 bands in order for me to get 3G upload and download speeds? If so my options will be very limited I'm sure. :\
Click to expand...
Click to collapse
Strange. That seems to be really locked down. I really can't advise you reliably. I do know that T-Mobile uses the 1700/2100 frequencies and that the Sensation, with only the 2100 portion, will work on it. If your network requires both bands, anything I say might lead you in error. Sorry for the lack of help.

MartyLK said:
Strange. That seems to be really locked down. I really can't advise you reliably. I do know that T-Mobile uses the 1700/2100 frequencies and that the Sensation, with only the 2100 portion, will work on it. If your network requires both bands, anything I say might lead you in error. Sorry for the lack of help.
Click to expand...
Click to collapse
t-mobile.com said:
Specs
Size: 4.96 x 2.57 x 0.4 in
Weight: 5 oz
Included battery: 1520 mAh Talk time: Up to 8 hours Standby time: Up to 21 days
Band (frequency): 850 MHz;900 MHz;1800 MHz;1900 MHz;UMTS: Band I (2100);UMTS: Band IV (AWS);UMTS: Band IV (1700/2100)
Click to expand...
Click to collapse
This is from the Sensation's page on t-mobile.com. Doesn't that mean it should cover both bands?

please send me an invite
[email protected]

Willieumm said:
This is from the Sensation's page on t-mobile.com. Doesn't that mean it should cover both bands?
Click to expand...
Click to collapse
It sounds like iWireless may not support AWS bands though, 1700/2100 is what they use, but doesn't necessarily mean it's AWS.
GSM bands will work without issue, assuming the device is unlocked.
Sent from my SAMSUNG-SGH-I997 using XDA App

Any chance to enable all LTE frequency supported by MSM8960?

Dear All,
I recently got this device in Hong Kong and is hapi with its performance!
But I am still wondering if this device could actually use the LTE available in HK?
I knw the msm8960 claimed to be capable of utilizing all frequency of radio,
so is it possible that there is some soft lock in the baseband?
Could i flash the baseband or replace the modem driver from other device to access other frequency?
any idea is appreciated!
Thanks!
Vasco

I think it has to modifiy the ROm and the hardware

I tried to figure out, if our Photon Q is supporting more LTE bands than 1900 MHz (#2 or/and #25).
-> http://en.wikipedia.org/wiki/E-UTRA#Frequency_bands_and_channel_bandwidths
On some sites there are reports for having another band. (Have to search again, I think it was 850 MHz, #26 or 700 MHz, #12/#17/#29.)
I have also searched for supported frequencies for MSM8960.
I found some BlackBerry devices based on that SoC and 2 different versions of supported LTE bands.
One version (UK) supported 4 in europe used bands und the other version (US) supported 4 in US/Canada used bands.
I think that the Photon Q is like the BlackBerry US version and supports 4 LTE bands in US/Canada.
If you need a few sites, I will search again and show it to you.
The strange thing is, if I set to LTE only (via 4636) I can see all 4 carrier (germany).
We have 3 bands with LTE on it, but I can only get signal to max 2 of them.
Band 3, 7 and 20 (1800, 2600, 800 MHz).
The weird thing is, that on band #20 (800 MHz) only 3 carrier are active, so it has to be band #3 or #7.
Maybe I'm missinterpreting things and thats just a sideeffect of crossing bands of LTE US and UMTS Germany.
On stock ROM there was another "secret phone code" to see what the phone-part is doing. (From qualcomm I believe.)
I think I will test it some other day, to see which band is active.
At last, I was never been able to "login" or "register" into my carriers network within LTE.
Please discuss about that possibility, I really want to find out, which frequencies are supported by our phone on LTE.

Loader009 said:
I tried to figure out, if our Photon Q is supporting more LTE bands than 1900 MHz (#2 or/and #25).
-> http://en.wikipedia.org/wiki/E-UTRA#Frequency_bands_and_channel_bandwidths
On some sites there are reports for having another band. (Have to search again, I think it was 850 MHz, #26 or 700 MHz, #12/#17/#29.)
I have also searched for supported frequencies for MSM8960.
I found some BlackBerry devices based on that SoC and 2 different versions of supported LTE bands.
One version (UK) supported 4 in europe used bands und the other version (US) supported 4 in US/Canada used bands.
I think that the Photon Q is like the BlackBerry US version and supports 4 LTE bands in US/Canada.
If you need a few sites, I will search again and show it to you.
The strange thing is, if I set to LTE only (via 4636) I can see all 4 carrier (germany).
We have 3 bands with LTE on it, but I can only get signal to max 2 of them.
Band 3, 7 and 20 (1800, 2600, 800 MHz).
The weird thing is, that on band #20 (800 MHz) only 3 carrier are active, so it has to be band #3 or #7.
Maybe I'm missinterpreting things and thats just a sideeffect of crossing bands of LTE US and UMTS Germany.
On stock ROM there was another "secret phone code" to see what the phone-part is doing. (From qualcomm I believe.)
I think I will test it some other day, to see which band is active.
At last, I was never been able to "login" or "register" into my carriers network within LTE.
Please discuss about that possibility, I really want to find out, which frequencies are supported by our phone on LTE.
Click to expand...
Click to collapse
Dear Loader009,
Thanks for your information! I'm really impressed that you could actually search the carrier in 'LTE only from Germany!
Could you please share the version of ROM you are using?
And if possible, any screenshot? I really want it can be used in HK with LTE(1800, 2100 & 2600Mhz)
Also do you have more information about the secret phone code? I think it would be interesting
Actually, I noted that xt925 and xt905 are using the same chip MSM8960 with LTE usable in HK.
Is there anyone can locate the radio/baseband of their rom and port it for XT897?
I am willing to try it with my machine.
If this work, I think we could use this photon q all over the world!
Any idea?
Regards,
Vasco

disablewong said:
Dear Loader009,
Thanks for your information! I'm really impressed that you could actually search the carrier in 'LTE only from Germany!
Could you please share the version of ROM you are using?
And if possible, any screenshot? I really want it can be used in HK with LTE(1800, 2100 & 2600Mhz)
Also do you have more information about the secret phone code? I think it would be interesting
Actually, I noted that xt925 and xt905 are using the same chip MSM8960 with LTE usable in HK.
Is there anyone can locate the radio/baseband of their rom and port it for XT897?
I am willing to try it with my machine.
If this work, I think we could use this photon q all over the world!
Any idea?
Regards,
Vasco
Click to expand...
Click to collapse
Of course, I was just blind guessing the hardware for xt926 and xt907 are using the same hardware.
If not, there should be one chip controlling the modem channel of the device to be replaced.
But WHICH ONE???
Any expert in this area can solve this question? I am a dummy for radio stuffs

This seems like it's getting pretty interesting.
Sent from my XT897 using Tapatalk 2

Dear all,
I'm also very interested in this topic since I imported a Photon Q to Germany and was wondering if it's possible to use the local LTE 800/1800/2600 bands.
I think the first thing we have to find out is whether the hardware is capable of using other bands than the 1900 band listed on the Motorola website. As Loader009 states he could see LTE carriers which are known to use different bands I assume the hardware can do it. Otherwise the carriers wouldn't have been listed, right? Maybe someone from another country with different frequency bands can check and confirm that he can see those carriers as well?
Thus, the limitation to the 1900 band should be software-made and could be modified by a developer. I hope someone can participate at that point as I don't know much about coding...

I'm using CM10.1.
I can't remember the secret phone code, I have to do research again.
This secret phone code only works on Stock ROM. (I stupidly deleted it, when it wasn't working on CM10 anymore.)
The one secret phone code I used to force "LTE only" was *#*#4636#*#*.
Please DON'T change the baseband (don't even tap on it).
This can do problems to you. (I had to use QPST to recover the supported frequencies.)
Also, developers (afaik) can't modify the modem firmware.
We also don't even know, which LTE bands the Photon Q is capable of. (Except 1900 MHz)

I've got my 32GB SDCard back and will test it in the next few days out.
I hope I'll find that secret phone code, I'll also make a few screenshots.

Got the code!
##33284# <- ##DEBUG#
It only works on stock afair!
I'll test tomorrow, it's about 3am now >.<

disablewong said:
Dear All,
I recently got this device in Hong Kong and is hapi with its performance!
But I am still wondering if this device could actually use the LTE available in HK?
I knw the msm8960 claimed to be capable of utilizing all frequency of radio,
so is it possible that there is some soft lock in the baseband?
Could i flash the baseband or replace the modem driver from other device to access other frequency?
any idea is appreciated!
Thanks!
Vasco
Click to expand...
Click to collapse
I have read the "QU_SnapdragonS4_White_Paper_FNL_Rev6.pdf" and found there following entry:
-----------------------------------------------------------
• Industry’s first fully integrated 3G/4G world/multimode LTE Modem: <<<Supports all of the world’s leading 2G, 3G and 4G LTE standards>>>.
It also includes integrated support for multiple satellite position networks (GPS and GLONASS) as well as short range radios via Bluetooth,
WiFi, FM and NFC.
• Designed for speed, compatibility and power savings:
Snapdragon S4 Processor MSM8960 chipset includes the industry’s only complete platform that integrates all of the world’s leading 2G, 3G and 4G mobile broadband modem technologies on a single chip. This new integrated multimode modem is based on an advanced, programmable architecture that is performance, size and power optimized for the fastest combination of modems available for:
- LTE FDD/TDD (Cat3)
- 3G (DC-HSPA+ Cat 24)
- EV-DO Rev. B
- 1x Advanced
- TD-SCDMA
- GSM/GPRS/EDGE NFC.
Multimode/Multiband Means Worldwide Coverage.
• Support for multiple radio frequencies: Mobile broadband technologies are growing increasingly complex in their implementation. LTE is currently being implemented in over 40 diff erent radio frequency bands throughout the world. To complement its wide range of modem standards supported, Qualcomm has designed the Snapdragon S4 Processor MSM8960 CHIPSET platform to <<< address all commonly-used frequencies (from 700–2600 MHz) and bandwidths up to 20 MHz>>>, allowing its customers to address any mobile network opportunity whether the simplest single frequency implementation to the most extensive multi-frequency global mode, whether 4G, 3G or 2G.
-----------------------------------------------------------
Based on the document the chip can handle all LTE Standards, but it depends on his "advanced, programmable architecture"....as written there and how Motorola / Sprint implemented this, maybe they reduced LTE only to one Standard.
I don't have LTE in my area and so I cannot test this.

That's possibly right.
Something else:
If I remember correctly, somewhere in this forum have been said that for CDMA the internal Sprint "ID"(?) is used.
Maybe that's also the reason why I cannot connect to LTE in my area.
The phone is trying to "login" with the Sprint ID and this of course won't work.
The ##DEBUG# menu wasn't helpfull. It shows frequencies for american standards and not for GSM/WCDMA.
Also the LTE menu is also not very helpfull, it doesn't show frequencies at all.

Any News on this topic?
Maybe one of the developers can give a statement?

Yesterday I tested a LTE compatible SIM card.
My Bro has a Samsung Galaxy S4 with 4G/LTE in my area.
So I've put his SIM-Card into my Photon Q and set LTE only.
I had no luck, the Phone couldn't register into the network for this SIM.
I guess either it has the wrong frequencies or LTE is for inbuilt "SIM" (Sprint SIM?) only.

The latter. LTE is configured only for 1900 MHz which Sprint uses.

LTE is configured only for Sprint's frequencies, however, it supports the United States frequencies of PCS blocks A-G. The G Block is Sprint's current LTE channel, and they may deploy it later on Blocks A through F, depending on if they own the spectrum in a given market. The reason you see EU networks when the phone is in LTE Only Mode is most likely because the Phone still sees GSM signals, but will only connect to LTE ones from those GSM signals. Likewise, in the US, if you force LTE Only and then search for networks, AT&T and T-Mobile US will come up as the GSM carriers the Photon Q sees, rather than the LTE signals it sees.
Setting the Photon to LTE Only will not do anything for LTE in the EU. I suspect that if another carrier in the EU uses the 1900 MHz for LTE, the Photon Q will have no issues connecting to LTE in Europe. But until that time, be happy with HSPA.

Skrilax_CZ said:
LTE is configured only for 1900 MHz which Sprint uses.
Click to expand...
Click to collapse
Can this configuration theoretically be changed / other frequencies be added?

Only if you break BP security.

Skrilax_CZ said:
Only if you break BP security.
Click to expand...
Click to collapse
Sorry, what's that?

IIRC The only place with 850mhz LTE available is the Chicago market and currently no phones at all support it. :crying:
Not only does your phone need to support it, your PRL and cell-site does too...

problems with 4G OPO and Three UK

Ho peeps,
just a quick question. I just moved to 4G but I'm experiencing some funny issues.
On my OPO under "Mobile network settings", I changed Preferred network type from 3G to LTE (recommended) and I got 4G. But, occasionally, all of a sudden I can't make or receive phone calls anymore, even if there is good reception signal. If I change the setting back to 3G, then everything works again. So, I checked the frequencies just in case and the OPO, has we know, has LTE: Bands: 1/3/4/7/17/38/40 and Three UK (my provider) for 4G has 800 MHz (0.8 GHz) and 1800 MHz (1.8 GHz). Granted that I don't know much about frequencies, bands, MHz etc, could anybody confirm that the frequencies that the opo has are fine with the ones that Three has? If that's the case, why the opo occasionally plays up when LTE is selected?
cheers

duratto said:
Ho peeps,
just a quick question. I just moved to 4G but I'm experiencing some funny issues.
On my OPO under "Mobile network settings", I changed Preferred network type from 3G to LTE (recommended) and I got 4G. But, occasionally, all of a sudden I can't make or receive phone calls anymore, even if there is good reception signal. If I change the setting back to 3G, then everything works again. So, I checked the frequencies just in case and the OPO, has we know, has LTE: Bands: 1/3/4/7/17/38/40 and Three UK (my provider) for 4G has 800 MHz (0.8 GHz) and 1800 MHz (1.8 GHz). Granted that I don't know much about frequencies, bands, MHz etc, could anybody confirm that the frequencies that the opo has are fine with the ones that Three has? If that's the case, why the opo occasionally plays up when LTE is selected?
cheers
Click to expand...
Click to collapse
Unless this has changed recently Three uses 2 bands for LTE(4G). One is Band 3 which the OPO supports which they use it big cities and towns and the other is Band 20 which they use in rural areas which the OPO does not support. I am guessing you are in a Band 20 area at the moment and that is why it is not working.

flumpster said:
Unless this has changed recently Three uses 2 bands for LTE(4G). One is Band 3 which the OPO supports which they use it big cities and towns and the other is Band 20 which they use in rural areas which the OPO does not support. I am guessing you are in a Band 20 area at the moment and that is why it is not working.
Click to expand...
Click to collapse
Well the 4g actually works, sorry maybe I wasn't clear, although it is patchy, but the issue is that often when the 4G is on, the phone doesn't allow incoming and outgoing calls even if there is full reception. When I switch off the 4g back to 3g the phone works again.

duratto said:
Well the 4g actually works, sorry maybe I wasn't clear, although it is patchy, but the issue is that often when the 4G is on, the phone doesn't allow incoming and outgoing calls even if there is full reception. When I switch off the 4g back to 3g the phone works again.
Click to expand...
Click to collapse
Here is something I just found on the subject.
Only two UK carriers offers LTE support with those frequencies: EE (supports band 3 & 7) and Three (supports band 3). Other carriers won't be able to support LTE coverage for the OnePlus One as they operate within band 20, which isn't supported by the phone.
Band 3 has limited usability in weaker signal areas, where it has difficulty penetrating built up areas and the interior of buildings, but it can carry more users. Band 7 (only supported by EE) offers wider coverage, as it can reach further, but cannot support as many users.
If you are an EE consumer, you wont experience any LTE problems. However, if you are a Three consumer (as I am), you may experience problems with LTE coverage, when you get outside of the major cities or in weaker signal areas within cities.
However, as Three offers extensive HSPDA+ coverage (or Advanced 3G (DC‑HSDPA) as they call it), you will still be able to get very fast data speeds (up to 42 Mbps). As Three offers 3G under the 2100MHz you will be able to get this speed with the OnePlus One in major cities and regular 3G in the rest of the UK.
Click to expand...
Click to collapse

flumpster said:
Here is something I just found on the subject.
Click to expand...
Click to collapse
thanks, that's useful, although I still wonder what causes that problem as I had it a few times now (can't make/receive calls when on LTE) as I assume the band won't have anything to do with it. I was hoping to find somebody else with that problem on Three, perhaps it is just a Three thing...

I'm on Three and I either get LTE (mainly London where I work) or H+. Either way I've never struggled, as far as I know, to receive phone calls or texts. Worried now though

duratto said:
thanks, that's useful, although I still wonder what causes that problem as I had it a few times now (can't make/receive calls when on LTE) as I assume the band won't have anything to do with it. I was hoping to find somebody else with that problem on Three, perhaps it is just a Three thing...
Click to expand...
Click to collapse
I am having the same problem, have tried different serivce provider sims in my phone and they work fine, just the three sim, which I can't change as I am in a contract with them, and OPO customer service is horrendous! I have tried the sim in another phone and it works fine. I have tried to chnge to 3G only, but all the three sims are 4G enabled, so when I select the Three 3G network, the phone wont register on it, I can only register on the 4G network. I have tried installing CM11, CM12, Paranoid Android, OxygenOS and had no effect, tried safe mode, tried rooting the phone, and still no effect.
Really need a solution to this, but not finding any

To be honest this problem happens at random, at least for me, so it's difficult to find the exact cause. Touch wood I haven't had it for about a month now, but like I said, and from previous experience, it could happen anytime. Read what flumpster has found in the previous post. As for a solution, I'm not sure what to say, other than switch to 3G, wait for the 3g network to pick up and then switch back to LTE, (you might need to repeat this a couple of times if it doesn't work) that fixes it, at least temporarily.
whitestar7 said:
I am having the same problem, have tried different serivce provider sims in my phone and they work fine, just the three sim, which I can't change as I am in a contract with them, and OPO customer service is horrendous! I have tried the sim in another phone and it works fine. I have tried to chnge to 3G only, but all the three sims are 4G enabled, so when I select the Three 3G network, the phone wont register on it, I can only register on the 4G network. I have tried installing CM11, CM12, Paranoid Android, OxygenOS and had no effect, tried safe mode, tried rooting the phone, and still no effect.
Really need a solution to this, but not finding any
Click to expand...
Click to collapse

duratto said:
To be honest this problem happens at random, at least for me, so it's difficult to find the exact cause. Touch wood I haven't had it for about a month now, but like I said, and from previous experience, it could happen anytime. Read what flumpster has found in the previous post. As for a solution, I'm not sure what to say, other than switch to 3G, wait for the 3g network to pick up and then switch back to LTE, (you might need to repeat this a couple of times if it doesn't work) that fixes it, at least temporarily.
Click to expand...
Click to collapse
i can't switch to 3G, when I sleect preferred network as 3G it says there is no service

LG Phoenix 2 (K371) Network mode issue

Hello,
I've got a LG Phoenix 2(K371) phone that I bought from Bestbuy and unlocked through AT&T
The phone is supposed to support the UMTS B1(2100 Mhz) frequency (as stated in specs).
I'm in North Africa right now for a business trip and unfortunately I wasn't able to get any 3G data with the local carrier that uses the UMTS 2100 Mhz frequency, I'm stuck with only 2G while my other phone works just fine.
I tried to change my Network Mode from 4G to 3G but the Network mode menu is missing!!!!!!
My questions are:
1- Does the K371 really supports the UMTS 2100 Mhz frequency ?
2- How can I change my Network mode from 4G/Lte to 3g/WCDMA?
Thanks

Did you ever get this sorted out? I am in Germany and can only get 2G also.

Same here in the UK! Only 2G.
My understanding is that either the official specifications of the phone are wrong - it doesn't support the HSDPA frequency of 2100 MHz, or (most likely) this frequency is disabled in the phone software settings since [email protected] doesn't use this frequency in the US. In any case it is very frustrating: I bought this phone convinced it is going to work while I am travelling in Europe, but obviously it doesn't as 2G data connection is useless.

Same problem in SE Asia. Phone doesn't have the right LTE bands but HSPC should work. Only getting 2G. No option in the hidden menu to change the modem RAT settings that I can see. *#546368#*371#
Anyone have any luck using the k371 overseas?

Same here...
I tried every single method I know in hopes that I could root the phone, but no luck!!!
I believe at&t disabled the said frequencies....
Our only bet is a proper root, and a custom rom..

any update on no UMTS 2100Mhz?

any solutoion on this issue?

I have found a solution. I am using it outside the US. I contacted my cellular provider, gave them the phone name (LG K371) and they sent me a text message with automatic settings for their data network. As soon as I opened it, I got a message like "data settings have been updated" and now it works on 3G and 4G without any issues. You may also be able to find these data configuration settings on your cell service provider's web site.

Seriously???
Please let me know is it AIRTEL service? since i am from INDIA.
we have the same problem in 2 mobiles..

Hmmm
I tried of calling and received setting for MMS , GPRS, INERNET but still i m seeing 2G symbol as E - edge detection
Please help me

Hi this is sainath
am also facing same problem, any one got solutions
please give reply.

tromal said:
Hello,
I've got a LG Phoenix 2(K371) phone that I bought from Bestbuy and unlocked through AT&T
The phone is supposed to support the UMTS B1(2100 Mhz) frequency (as stated in specs).
I'm in North Africa right now for a business trip and unfortunately I wasn't able to get any 3G data with the local carrier that uses the UMTS 2100 Mhz frequency, I'm stuck with only 2G while my other phone works just fine.
I tried to change my Network Mode from 4G to 3G but the Network mode menu is missing!!!!!!
My questions are:
1- Does the K371 really supports the UMTS 2100 Mhz frequency ?
2- How can I change my Network mode from 4G/Lte to 3g/WCDMA?
Thanks
Click to expand...
Click to collapse
Sorry for a late reply, but here's the real scoop about the LG K371 (AT&T)
First, being a "cheap" LG phone, there are very few bands actually included, and they only cover the main (not all) AT&T US frequencies, therefore it's no surprise that doesn't work on all overseas carriers. Again, they are covering only major US bands, and despite what it shows on the box or specs it may not be always true. B1 (2,100Mhz) band has different sub-bands, therefore it doesn't mean that the US B1 will work on an overseas B1, let alone the air-interface (2G/3G/4G/LTE) may not all be supported even if this sub-band exists.
Second, being that it's an AT&T phone, they are knows to load firmware with major restrictions for band selection called RAT Restrictions, which cannot be undone unless you can reflash it with a non-customized firmware, but you can't do that either due to the locked bootloader. A better option is to always go with the un-customized or Tmobile K7/K8 because they always have a lot more bands enabled than the AT&T version. Better yet, go with a Samsung which have more bands even on the AT&T models.
Bottom line, "cheap" phones along with AT&T restrictions will not work everywhere, despite the specs, and there's nothing you can do about it.
And my favorite old adage is "You get what you pay for!" LOL