I have been having difficulty with data roaming on stock Android 7.0 (RS98821d) on the LG G5 RS988 USA Unlocked device.
Using a T-Mobile USA SIM, I am able to use the the local T-Mobile USA network in the country of United States, but when roaming to another country and a foreign network, data no longer works correctly. Data often does not work at all until I go to the APN settings (Settings ->More -> Mobile Networks -> Access Point Names) and use the "Restore default settings" option. After a period I have to repeat the APN reset to get data roaming working.
Have others experienced this or similar issues?
Back in June I had similar issues in France. I have T-Mobile and the RS988. When I first got there I was using the fast.t-mobile.com APN and couldn't connect. I switched over to the epc.t-mobile.com APN and everything started working just fine. For the network mode I was using the LTE/GSM/UMTS setting. Hope this helps.
It seems that "epc.t-mobile.com" is supposed to be the T-Mobile USA non-LTE access point. I shall try to remember to try the "epc.t-mobile.com" APN next time while roaming internationally. However, after testing the "epc.t-mobile.com" access point, LTE can be used with it and it works well.
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Hey there,
So I called sprint and told them I need them to unlock my phone for international travel and they did. I tested it with AT&T and it worked for phone connections but not for data. Any idea how to make ATT data connection to work?
APN settings?
So I need to enter specific APN settings for each sim card/carrier I use?
Depends on provider. On ting.com I did, now on byowireless it just works. Both resell T-Mobile.
Google for your carrier's apns settings, and add them.
Hello. I have an SM-G925F which I bought from Telekom Macedonia and I am still using my number from there also but I am currently in the US and would like to use it on T-Mobile USA.
I know that the device supports all the same bands as the SM-G925T model.
The problem I am having is that when my phone is set to LTE/WCDMA/GSM in the Network Mode settings, I do not have any data connection at all, only when I make a call, I start to get a data connection but only 3G/H+. If I switch my setting to WCDMA/GSM, then I get a data connection at all times like normal but it still is only 3G/H+. I have tried two different APNs and different settings in the APN but I still cannot get a data connection at all times on the LTE/WCDMA/GSM setting and I cannot get LTE/4G at all.
After contacting T-Mobile, all they came up with is to try to have the same software reinstalled on my phone. Does anyone have any experience with this and can anyone help me?
Anyone?
Call Tmobile and have them input your phone's IMEI in their system. Ask for the APN settings as well. I am on the same boat and one call to ATT got me from H to 4G. Your phone will just show 4G, not LTE but you will get LTE speeds regardless.
I tried doing that too. I called T-Mobile a few times and they confirmed my IMEI number being on the account but still no luck. It's really weird..sometimes I get 3G/H+ on the "LTE/WCDMA/GSM (auto connect)" network mode setting on the phone but most of the time, I get NO DATA connection at all..only the signal bars.
Any Update
Did you finally figure it out? Is LTE working now?
I love this phone....there, I said it. But it's driving me crazy.
I bought it from a Chinese retailer, who shipped it with X821 firmware, but the box states that it's an X820. I doubt there is any difference in the hardware.
I would have left everything as it was, but I can't seem to make phone calls (don't have a data plan yet...yeah, I know....) with anything other than 2G, and that is about to go extinct. When I set it to WCDMA, it shows a UMTS connection, with no carrier designation, but the tower is the same one I connect to with 2G. The phone does sometimes show an AT&T 3G connection in the status bar, but I can't make calls, even though I have full signal. When I place the same SIM in my old HTC Inspire, the same monitoring app shows "UMTS - AT&T HSDPA+" and works just fine.
I'm at my wits end. I have rooted, installed TeamSpain recovery, replaced the firmware with the X829 and even tinkered with the frequency configurations through DFS Studio (which did a lot of complaining, and I'm still not sure if the changes stuck 100%). I also played with APN settings and tried the SIM in different slots, both alone, and with another SIM. And after all of that, still no progress in getting this phone to use a 3G or 4G connection to make calls. If I don't set it to "GSM only", no phone calls in or out. I'm essentially right under a tower, so signal shouldn't be an issue.
If anyone is using the same provider in the US, and is not having these kinds of issues, I'd really appreciate hearing what firmware you are using, and/or what you did to get things working.
I am using it on x820 with official stock 0.17s firmware, and did a dirty flash to cuoco92's 17s firmware. Everything works including HD voice calls, and full LTE.
xterminater07 said:
I am using it on x820 with official stock 0.17s firmware, and did a dirty flash to cuoco92's 17s firmware. Everything works including HD voice calls, and full LTE.
Click to expand...
Click to collapse
I tried this, as well as the Remix ROM. In fact, I think I've tried just about everything, without success. At one point, I had one of the apps indicating a 4G connection, but the phone diagnostics showed GSM (2G). Even the apps aren't all sure what to make of what's going on with the connections reported by this phone.
Currently on the cuoco92 v35 ROM. When WCDMA is enabled, I see simply a good UMTS connection , sans carrier name, in the "Network Cell Info Lite" app, and no ability to make calls. I also often (but not always) see the "AT&T 3G" sign. 4G or LTE never shows at all, even though the diagnostics show that the phone is communicating with an LTE transmitter, when preferred network is set to "unknown". It won't even let me set things like "LTE only".
Any chance you could set your phone to WCDMA and see what the "Network Cell Info Lite" app shows you? Anyone else with this phone on AT&T?
BTW, I am now using a data plan, which I thought might make a difference. It doesn't. EDGE data only for me . New SIM card is on the way, but my hopes aren't high.
Is it possible for a Chinese seller to have borked the phone so thoroughly with their x821 ROM (it's an x820 marked phone), that it keeps any subsequent radios from flashing properly? I don't know how/why it would work for some and not others.
Starting to really dislike this "phone"......it's more of tablet at this point.
Thanks.
I think APN is not set for AT&T
try this:
"Main steps
To use data services on our network with a non-AT&T device, you may need to program the data settings. The sections below provide the correct settings and steps for programming based on your device type and operating system.
.
Access the Settings menu.
Locate and select Wireless & Networks or More Networks.
Select Mobile Networks.
Select Access Point Names.
Locate and select the option to add a new APN. This is usually accessed by a + symbol on the screen or by tapping the menu button.
Program each field using the settings below.
Save the changes to return to the APNs menu and select the new APN.
Name ATT Phone
APN phone
Proxy Not set
Port Not set
Username Not set
Password Not set
Server Not set
MMSC
MMS proxy
MMS port
MCC 310
MNC 410
Authentication Type None
APN type default
APN protocol IPv4
Bearer Unspecified
Note: If you are unable to program your device following the steps above, refer to your user manual or contact the manufacturer for assistance."
Cadet_C said:
I think APN is not set for AT&T
Click to expand...
Click to collapse
Thanks, but I wish it were so simple. I have tried this, and other APN settings. None work to get this phone to be usable on anything other than 2G.
I just received and activated the replacement SIM. Still no improvement. While typing this, I have Network Cell Info Lite app running, and with the Set Preferred Network Type showing "Unknown" in the phone's diagnostic screen, It will switch randomly between "EDGE AT&T" (which works fine) and "UMTS -" (which is useless). Both have strong signals. For a split second before it switched to "UMTS-", the app showed "GPRS AT&T", but only for a split second before it kicks over to "UMTS-".
I wish someone using this "phone" on AT&T in the US, would run this app to compare notes. It may be that that the phone works fine on a full implementation of LTE (i.e. in locations where AT&T have already deprecated 2G) but not in other areas. Still, that doesn't seem to explain why this phone seems unable to register on the same 3G network, used easily by my other phone, with the very same APN settings and SIM.
You would have to call att and check if they turned our phone on to use lte. If your phone is not "registered" as an LTE capable phone it wouldn't be able to pick it up. This phone has all the bands needed for AT&T because I am using it now. All LTE work straight out the box, and i'm on the latest 19s cn rom
xterminater07 said:
You would have to call att and check if they turned our phone on to use lte. If your phone is not "registered" as an LTE capable phone it wouldn't be able to pick it up. This phone has all the bands needed for AT&T because I am using it now. All LTE work straight out the box, and i'm on the latest 19s cn rom
Click to expand...
Click to collapse
I'm a bit confused. Is this what you did to achieve proper function of this device? I.e. calling AT&T and getting them to do this for you? My conversation with their tech person didn't seem to bear fruit in this regard.
Also, which slot do you have the SIM card in? I've used the stock 17s and now on cuoco92 v35 ROM. There definitely seems to be a difference in how the network settings behave, based on the location of the SIM. At one point, after selecting BAND 6 (when it would let me), the phone showed a constant "AT&T 3G" connection, but it was useless. No calls and no data.
My H961N does not allow me to independently set my network band for each sim card. Both my network providers operate on 2G/3G/4G however since I have gotten this V10 I have had inconsistent network usage. At first I would strongly get one network and the other would mostly be on Emergency Calls when indoors depending on where I was. I used the hidden menu code *#546368#*961#-> Field Test -> Modem Settings, from Modem Settins I have tried to set the RAT Selection and the Network Mode however when I check Engineering Mode both sims show the same band if I am on WCDMA Only or GSM Only but neither provider operators on the same band except for one on 3G. If RAT is set to selectively move between two or more frequencies then one sim shows Invalid Band in Engineering Mode. Using Network Mode I have tried to set each sim to different band but both would either show the same band or one would appear invalid under Engineering Mode.
Another Issue I have is I am unable to use data even though I have the correct APN for both of my Network Providers. I have verified that both sims do work when used in another phone, at one point I visited both Providers but none could give me an answer to my issue. One of my Providers did however try and activated a data plan while I was in their office and the V10 did show 3G and received data however upon returning back to my regular surroundings I no longer got any data. I have tried upgrading the V10 to Marshmallow and Nougat but the upgrade did not solve this problem, neither the one I stated before. But on Nougat both my sims did show 3G but strangely only when I have my Wifi active and using a VPN. Currently I am on Lollipop and rooted I considered trying to flashing a qcn, sec and nvm files since I saw a site listing them as fixing network and data issues on this particular phone, I have the files just in case. Any help would be greatly appreciated.
We have a small local carrier in Southeast Oklahoma called Pine Cellular. They roam on ATT. When ATT recently turned off their old networks, it caused problems with roaming for Pine. They told my mother-in-law she needed a new phone with volte so I bought her the Oneplus Nord N200 5g as my son has that phone on T-Mobile. Insert her sim card and wifi calling and volte still don't work. Insert my T-Mobile sim and they work fine.
I took the phone to a Pine store and they lady even put in her personal sim which had allowed her to roam in Dallas (so volte was enabled) and it still wouldn't allow volte or wifi calling. She said Pine was in the process of updating their systems but she had no idea when it would start to work. They sold my father-in-law a cheap Alcatel and it works fine. I had been convinced it was something to do with the settings on my mother-in-laws sim until the sales rep tried her personal one.
Can anyone tell me what the heck was going on and why the phone wouldn't work on their network? I'm assuming it has something to do with Pine Cellular's internal settings but really WTF?
No one?
This was an unlocked phone bought from Amazon. It worked with the local Pine network, just Wi-Fi calling did not work and VoLTE did not work for roaming, but I could make and receive calls within the Pine Cellular service area. The old Pine Cellular network was GSM.
The Wi-Fi calling menu options appeared when I inserted my T-Mobile sim.
It sounds like you purchased a carrier variant (T-Mobile) version of the N200 (DE2118). Your phone model number is different than the unlocked generic version of the N200 (DE2117). AT&T operates its VoLTE network using whitelists. This means that AT&T will not use VoLTE with any other phone models than the ones they have approved on their list. Since AT&T has "shut down" 3G, phone calls can not be placed on their network without the use of VoLTE.
Only the unlocked generic version DE2117 is on their whitelist, as you can see here:
https://www.att.com/idpassets/images/support/pdf/Devices-Working-on-ATT-Network.pdf
You will not be able to use VoLTE on AT&T with that model of phone.
Wi-Fi Calling is similar to VoLTE, and operates under the same restrictions. (VoIP over Wi-Fi instead of over LTE cellular).
VoLTE is not a true standard. It relies on the implementation of custom VoIP software unique to each carrier and each device. Hence not a standard. The goverments have not forced carriers to standardize 4G like they did 3G, so the carriers have not. AT&T is using this chance to restrict access to their proprietary VoLTE implementation as a weapon to lock down phones to AT&T approved models with locked bootloaders and/or restricted software.
Many phones which support the VoLTE "standard" are not able to operate in VoLTE mode, neither with AT&T nor the other carriers. Even changing the system software on the phone can break these proprietary VoLTE implementations, as I have found personally.
It was the unlocked version. It did work on pine cellular. She could make and recieve calls on the phone network, just not roam because volte could not be enabled.
Amazon.com
In that case, there are many steps to getting VoLTE working roaming on AT&T
1. The SIM card must have proper settings in it, sometimes requiring replacement of the SIM card.
2. IMS software must be installed on your phone (the proprietary VoLTE software made by your carrier). If you are running stock software, this is already done.
3. APN (IMS) settings must be correct. It seems your local carrier is still running 3G, and you do not need VoLTE there yet, so the pine cellular APN can be skipped.
Two APN entries are needed, one for data (carrier) and one for voice (IMS).
One will be named IMS with uniform settings, the other will be named after the carrier, with specific settings.
Settings -> Wi-Fi & Network -> SIM & Network settings -> Access Point Names -> APNs
Uniform IMS settings
VoLTE－Manually add the IMS APN - SUN Mobile
SUN Mobile
www.sunmobile.com.hk
The IMS APN is not the active "checked" one, but must be present in order for the voice (VoLTE) network to work on top of the data (LTE) network.
Each carrier has specific values that must be programmed. Sometimes Apple and Google will program these settings through their management controls for the major carriers, otherwise they must be inputted manually.
Pine Cellular APN Settings
Pine Cellular APN Settings 2023 - 5G 4G LTE APN USA
Pine Cellular USA 4G LTE 5G Internet and MMS Settings for iPhone 14, iPhone 14 Pro, iPhone 13 Pro iPad Android Samsung Galaxy HTC Nexus Tab Duos Pine Cellular APN Settings for Android In your Android Smart Phone Go to - Settings -> More ->Mobile Network -> Access point Names -> + ( to add)
www.apnsettings.org
4. Roaming must be enabled.
This will include another APN for AT&T roaming use.
settings -> Wi-Fi & Network -> SIM & Network settings -> Roaming checked
Settings -> Wi-Fi & Network -> SIM & Network settings -> Access Point Names -> APNs
Program Data Settings for Your Device
Can’t connect to the internet on your mobile device? Here’s how to set up the access point name (APN) to get you going again.
www.att.com
5. *#*#4636#*#* in the dialer to bring up the testing menu, then the phone information setting, then the set preferred network type drop down. Set to a list that includes LTE. (I seem to have to have 3G options allowed, which connect and then transition to 4G VoLTE)
6. VoLTE must be turned on in settings -> Wi-Fi & Network -> SIM & Network settings -> VoLTE -> use VoLTE.
*#*#4636#*#* to check for "VoLTE Provisioned".
7. It can take up to 15 minutes for VoLTE to register with the network in order to place and receive calls.
oCAPTCHA said:
In that case, there are many steps to getting VoLTE working roaming on AT&T
1. The SIM card must have proper settings in it, sometimes requiring replacement of the SIM card.
2. IMS software must be installed on your phone (the proprietary VoLTE software made by your carrier). If you are running stock software, this is already done.
3. APN (IMS) settings must be correct. It seems your local carrier is still running 3G, and you do not need VoLTE there yet, so the pine cellular APN can be skipped.
Two APN entries are needed, one for data (carrier) and one for voice (IMS).
One will be named IMS with uniform settings, the other will be named after the carrier, with specific settings.
Settings -> Wi-Fi & Network -> SIM & Network settings -> Access Point Names -> APNs
Uniform IMS settings
VoLTE－Manually add the IMS APN - SUN Mobile
SUN Mobile
www.sunmobile.com.hk
The IMS APN is not the active "checked" one, but must be present in order for the voice (VoLTE) network to work on top of the data (LTE) network.
Each carrier has specific values that must be programmed. Sometimes Apple and Google will program these settings through their management controls for the major carriers, otherwise they must be inputted manually.
Pine Cellular APN Settings
Pine Cellular APN Settings 2023 - 5G 4G LTE APN USA
Pine Cellular USA 4G LTE 5G Internet and MMS Settings for iPhone 14, iPhone 14 Pro, iPhone 13 Pro iPad Android Samsung Galaxy HTC Nexus Tab Duos Pine Cellular APN Settings for Android In your Android Smart Phone Go to - Settings -> More ->Mobile Network -> Access point Names -> + ( to add)
www.apnsettings.org
4. Roaming must be enabled.
This will include another APN for AT&T roaming use.
settings -> Wi-Fi & Network -> SIM & Network settings -> Roaming checked
Settings -> Wi-Fi & Network -> SIM & Network settings -> Access Point Names -> APNs
Program Data Settings for Your Device
Can’t connect to the internet on your mobile device? Here’s how to set up the access point name (APN) to get you going again.
www.att.com
5. VoLTE must be turned on in settings -> Wi-Fi & Network -> SIM & Network settings -> VoLTE -> use VoLTE.
#*#*4636#*#* to check for "VoLTE Provisioned".
6. It takes approximately 15 minutes for VoLTE to register with the network in order to place and receive calls.
Click to expand...
Click to collapse
Thank you so much for writing all that out. i bet it's the APN settings. There was only the one for pine and putting the sim in another pine cellular phone had it working. I'm going to try one more time before I send it back. I'm not very confident that pine customer service knows that they are doing at this point.
alforddm said:
Thank you so much for writing all that out. i bet it's the APN settings. There was only the one for pine and putting the sim in another pine cellular phone had it working. I'm going to try one more time before I send it back. I'm not very confident that pine customer service knows that they are doing at this point.
Click to expand...
Click to collapse
I guess I'm going to send this phone back and buy something from Pine. Bought a new SIM card from them this morning and it still doesn't work. I now have data roaming on ATT but still no VoLTE or WIFI calling.
The Pine rep I talked to this morning was much better than the previous one and she said she had experienced this previously with a clients new phone. Pine was "old school" with some of their internal system.
I did notice they aren't selling any 5g phones yet so it's possible it's something with this being a 5G phone or maybe Android 11.