Develop Bugs

Accessing service menu

I was recently in Korea for work, so I picked up the G4 to bring back to the US. I bought it from SK Telecom, they told me phone should work globally. Now being back in the US, i popped in my Verizon Sim card and no mobile network is available. Phone is reading my sim and has the correct APNs, but still no connection. Does anyone know how to access the service menu to change bands?

bmpolska said:
I was recently in Korea for work, so I picked up the G4 to bring back to the US. I bought it from SK Telecom, they told me phone should work globally. Now being back in the US, i popped in my Verizon Sim card and no mobile network is available. Phone is reading my sim and has the correct APNs, but still no connection. Does anyone know how to access the service menu to change bands?
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Verizon is cdma. Korea and most of the world is gsm. Like t mobile

xantanion said:
Verizon is cdma. Korea and most of the world is gsm. Like t mobile
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I figured, but does anyone know how to access the hidden menu to view all the bands available?

5457#*500#
That should do however I can't access the main hidden menu to disable the throttling.

Thanks for the info 3rd degree.
I tried that on my H815 G4 but it didn't work (invalid code).
I also tried 5457#*815# but that didn't work either.
Unfortunately the 3845#*modelnumber# that always worked previously doesn't now. eg 3845#*815# just gives the invalid code error.
*Edit* the answer is in this thread:
http://forum.xda-developers.com/g4/help/how-to-enter-g4-hidden-menu-t3122373
the code that works for me is 277634#*#

bmpolska said:
I was recently in Korea for work, so I picked up the G4 to bring back to the US. I bought it from SK Telecom, they told me phone should work globally. Now being back in the US, i popped in my Verizon Sim card and no mobile network is available. Phone is reading my sim and has the correct APNs, but still no connection. Does anyone know how to access the service menu to change bands?
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If you call 277634#*# it wil open the menu and Go into Field Test > Modem Settings and will let you change it

Rehok said:
If you call 277634#*# it wil open the menu and Go into Field Test > Modem Settings and will let you change it
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For some reason, field test isn't an option on my Tmo variant. Any ideas? (i'm trying to see what LTE bands are enabled)

anyone knows the marshmallow code?

Use this phone on Cricket Wireless?

I'm currently using the AT&T H810 on Cricket Wireless and am wondering how to get the data to work with this Verizon variant. I can make calls when I put my Cricket SIM card in, but I get no data. Any ideas or anyone already get this working? Thanks!

Did you change the APN settings? Also, AT&T uses LTE bands: 2, 4, 5, and 17 primarily. The Verizon G4 doesn't have band 17. so you are not going to get very good coverage in buildings or at far distances from the tower.

geoff5093 said:
Did you change the APN settings? Also, AT&T uses LTE bands: 2, 4, 5, and 17 primarily. The Verizon G4 doesn't have band 17. so you are not going to get very good coverage in buildings or at far distances from the tower.
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I didn't but I think cricket did it remotely when I put the SIM card in, how do I check? Also is it possible to unlock band 17? I've seen posts here and there talking about unlocking different bands on variants which don't have them unlocked by default. Thanks.

petermg said:
I didn't but I think cricket did it remotely when I put the SIM card in, how do I check? Also is it possible to unlock band 17? I've seen posts here and there talking about unlocking different bands on variants which don't have them unlocked by default. Thanks.
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I know I had to put the APN settings in myself when using a T-Mobile SIM. I would Google "Cricket APN Settings" and then go to the settings on your phone (under more I believe), and edit the APN. You can't unlock band 17 unfortunately.

geoff5093 said:
I know I had to put the APN settings in myself when using a T-Mobile SIM. I would Google "Cricket APN Settings" and then go to the settings on your phone (under more I believe), and edit the APN. You can't unlock band 17 unfortunately.
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Yeah, why can't we unlock band 17? I tried using a few methods listed where you write to the NV ITEMS and enable all kinds of bands, but it still didn't work. I only got LTE when I force it via a hidden menu setting, but then I couldn't make or receive any calls. I get HSPA and HSPA+ but that's it and there's a constant icon in the notification bar of a white sim card with a question mark on it...!?

petermg said:
Yeah, why can't we unlock band 17? I tried using a few methods listed where you write to the NV ITEMS and enable all kinds of bands, but it still didn't work. I only got LTE when I force it via a hidden menu setting, but then I couldn't make or receive any calls. I get HSPA and HSPA+ but that's it and there's a constant icon in the notification bar of a white sim card with a question mark on it...!?
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Because the phone doesn't support it. You can't unlock bands that the phone doesn't have to begin with.
Sent from my Nexus 6P using Tapatalk

Is there anything special to get calls to work on Cricket ? Updated APN settings for data but calls still did work.

JeffATL said:
Is there anything special to get calls to work on Cricket ? Updated APN settings for data but calls still did work.
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When I tested with my Cricket SIM card calls just worked. I didn't have to do anything. However as you mentioned I had to manually update the APN to get data working.

petermg said:
When I tested with my Cricket SIM card calls just worked. I didn't have to do anything. However as you mentioned I had to manually update the APN to get data working.
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That is odd. I wonder if I met someone at a Cricket wireless there if techs would help getting it working.

Galaxy watch LTE - disabling eSIM on non supported market

Hey guys,
I found LTE unlocked variant for the price of BT (30€ more). ESIM is not supported here so I still cant use the full functionality but I'd buy it just for those 1.5gb memory if not anything else.
Does anyone know if its forcing you to "insert" esim because wouldn't like to have constant popups saying insert sim/no network., or can network connectivity be somehow disabled and normally used as BT/wifi edition until the operators support the LTE?
Thanks,

Maybe if you turn on Airplane mode, then switch on BT and WiFi manually.
Sent from my SM-N960F using Tapatalk

Alahdal said:
Maybe if you turn on Airplane mode, then switch on BT and WiFi manually.
Sent from my SM-N960F using Tapatalk
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Thanks - I actually didn't know that was possible on either Tizen or Android :good:

Maybe this info is useful....
TizenOS allows you to activate airplane mode, but from what I've seen you still need a SIM card in an LTE unit. There may or may not be a way around this yet; all the Telephony packages seemed pretty concerned about checking the SIM card constantly and throwing errors whenever it was missed. Lucky for us the Telephony is left at Partner level, so with an SDB shell you should be able to just type something like:
Code:
sdb shell uninstall org.tizen.telephony-syspopup*
and the nags should cease to be forever. Not sure if that's exactly the right command string to work, but I'll check when I get the chance to.
Hope this helps.

You can simply disable LTE connectivity in the setup Menu, like Wifi or NFC. Before i activated the eSIM on my watch i didn't get any pop up or message to activate the eSIM. So i would say it is no problem to use the watch without the eSIM. With disabled LTE it works exactly like the BT model.

Big_Balls said:
You can simply disable LTE connectivity in the setup Menu, like Wifi or NFC. Before i activated the eSIM on my watch i didn't get any pop up or message to activate the eSIM. So i would say it is no problem to use the watch without the eSIM. With disabled LTE it works exactly like the BT model.
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Thanks, however I went to the Tmobile store today to try to look through the settings to see how to disable LTE but I couldn't find it and the salesperson didn't know either. Would you be able to post a screenshot of how to disable LTE? Thanks!

redbeard07 said:
Thanks, however I went to the Tmobile store today to try to look through the settings to see how to disable LTE but I couldn't find it and the salesperson didn't know either. Would you be able to post a screenshot of how to disable LTE? Thanks!
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So I bought a LTE watch and found the place to disable mobile networks.
In Settings, go to "Connections" -> "Mobile networks". Anyway, its off by default when I purchased the watch, and I can confirm that I've never had a single pop-up message asking me to activate.
I purchased the LTE version of the watch in the US directly from the Samsung website.

redbeard07 said:
So I bought a LTE watch and found the place to disable mobile networks.
In Settings, go to "Connections" -> "Mobile networks". Anyway, its off by default when I purchased the watch, and I can confirm that I've never had a single pop-up message asking me to activate.
I purchased the LTE version of the watch in the US directly from the Samsung website.
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Have you noticed any change regarding the battery life performance??

iopetja said:
Hey guys,
I found LTE unlocked variant for the price of BT (30€ more). ESIM is not supported here so I still cant use the full functionality but I'd buy it just for those 1.5gb memory if not anything else.
Does anyone know if its forcing you to "insert" esim because wouldn't like to have constant popups saying insert sim/no network., or can network connectivity be somehow disabled and normally used as BT/wifi edition until the operators support the LTE?
Thanks,
Click to expand...
Click to collapse
Hi, It is an esim, so techically it is already 'inserted' in your device. You don't have to set up a connection if you don't have to, just use the watch like the BT version. There won't be any popups or errors. Just switch off mobile data completely under settings, as it eats battery like nothing.

djolivares said:
Have you noticed any change regarding the battery life performance??
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I am also interested if there is any difference in battery life between a Galaxy Watch Bluetooth anbd a Galaxy Watch LTE but with "Mobile Networks" off in the setting menu.
I'm basically wondering if there is any additional drain from the LTE services that run in the background even if the setting menu says LTE should be off. If so, I would like to know if I could turn off those background services to extend battery!

Mine was off by default, but I do not have service on my watch, so that may be why. As people have already said its a eSim(embeddedSim), so its not able to be removed, and wont hurt anything by being there.

Question Desperate help needed Z Fold 3 SM-F926B. Cant use any sim.

Need some help guys. I am based in Australia and swapped an iPhone for the Z Fold 3. Went through the usual connection process with my sim and esim whilst connected to wifi. All was well as it allowed calls and received calls when I was home. As soon as I stepped outside my home where it was trying to use the network, it does not work. It keeps saying not registered on network. Tried to manually select network via settings, checked all APN settings from the network and all is ok. Even tried 3 different carrier sims (Vodafone, Optus and Telstra) yet still no matter what this phone will never connect to any carrier network without wifi. From there I tried 3 different firmwares from Sam mobile just in case it had corrupt firmware. Both android 11 and 12 will not work. Need help guys please. Any suggestions?

Did you try calling the carrier or going online to their site and activate the phone? Not from Australia but I think it's worth a try.

jettie1767 said:
Thank you can't leave your reply. May I ask what you mean? This is an unlock phone from what I've been made aware. Upon checking it on The Australian database to ensure it is clear, this appears to be unlocked to all networks. If you can be kind as to provide details on what you mean I am more than happy to follow your instructions and try. Thank you.
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.

jettie1767 said:
Did you try calling the carrier or going online to their site and activate the phone? Not from Australia but I think it's worth a try.
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Thank you can't leave your reply. May I ask what you mean? This is an unlock phone from what I've been made aware. Upon checking it on The Australian database to ensure it is clear, this appears to be unlocked to all networks. If you can be kind as to provide details on what you mean I am more than happy to follow your instructions and try. Thank you.

bruangie said:
Thank you can't leave your reply. May I ask what you mean? This is an unlock phone from what I've been made aware. Upon checking it on The Australian database to ensure it is clear, this appears to be unlocked to all networks. If you can be kind as to provide details on what you mean I am more than happy to follow your instructions and try. Thank you.
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Strange thing, my first thought was maybe try different carrier SIM cards, but as you already did it has to be phone ..

bruangie said:
Thank you can't leave your reply. May I ask what you mean? This is an unlock phone from what I've been made aware. Upon checking it on The Australian database to ensure it is clear, this appears to be unlocked to all networks. If you can be kind as to provide details on what you mean I am more than happy to follow your instructions and try. Thank you.
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Hi there. When I first got my unlocked phone and put in my Verizon sim, it worked right away. However, when I logged on to the Verizon site, it was showing my old phone with the new IMEI and the phone could receive calls but not call out. I called Verizon and asked them to activate which fixed the issue. Can't you call the carrier and ask if they can help you figure out why you can't call when on the cell network?

That is the same error I get here in the States if I try to manually connect to any roaming network (network other than T-mobile, the carrier I use).

ButterflyFlutterflyMyOhMy said:
That is the same error I get here in the States if I try to manually connect to any roaming network (network other than T-mobile, the carrier I use).
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Thank you for your input. I have tried all three major network carrier sims however same result. Am so lost.

jettie1767 said:
Hi there. When I first got my unlocked phone and put in my Verizon sim, it worked right away. However, when I logged on to the Verizon site, it was showing my old phone with the new IMEI and the phone could receive calls but not call out. I called Verizon and asked them to activate which fixed the issue. Can't you call the carrier and ask if they can help you figure out why you can't call when on the cell network?
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Thank you for your reply. They are hopeless and point me to samsung. Will not help at all unfortunately.

ButterflyFlutterflyMyOhMy said:
That is the same error I get here in the States if I try to manually connect to any roaming network (network other than T-mobile, the carrier I use).
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Thank you for your input. So yours will not work on any network?

bruangie said:
Thank you for your input. So yours will not work on any network?
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It works on T-mobile, but it refuses to connect to any other network, and if I try manually to switch, it gives that same error message you get. Roaming is included in my plan for calls, text, and data, so it is supposed to work, but these phones have issues. I currently have the temporary fix on my phone for the T-mobile issue, so it has stopped flipping to "Emergency Calls Only" and back, but the fix prevents it from seeing other networks now. Whether it is Samsung or T-mobile who has to fix it, it needs to be fixed!

Question How to fix faulty mobile network on Exynos?

I have a Galaxy S22 Exynos and I have troubles with mobile network. Although the phone shows it has full 4G or even 4G+ connection, Internet doesn't work at all, and only up arrow lights up. Turning airplane mode on and back off again seems to temporarily fix it. I've tried countless methods in order to fix it, but nothing seems to work. How to fix it?

I has same issue.
Moscow, megafon...

I have the same problem, its hardware issue and samsung doesnt want to admit it. I sended mine to warranty repair and hopefully they will fix it.
I had contacted samsung support for help and they asked to reset network setting, then all phones settings and then full format but none of those fixed the issue. Then they started to ask for log files but it wasnt possible to take the log file they asked for because it needs OTP password which i cant get because its only for samsung repair center. After that they said i should bring phone to repair.

Any news about this problem?
I'm tried switch mobile network to 3g/2g only mode and this is help, but not 4g or 4g+.
It looks like the phone can't switch from 4g+ to 3g mode and stuck.

istroganov said:
Any news about this problem?
I'm tried switch mobile network to 3g/2g only mode and this is help, but not 4g or 4g+.
It looks like the phone can't switch from 4g+ to 3g mode and stuck.
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I managed to find which LTE bands aren't working properly and disabled them

VantuzProper said:
I managed to find which LTE bands aren't working properly and disabled them
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could you tell how you did it?

istroganov said:
could you tell how you did it?
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I looked which band is faulty using the *#0011# code, and restricted bands with the Samsung Band Selection app from the Play store

VantuzProper said:
I looked which band is faulty using the *#0011# code, and restricted bands with the Samsung Band Selection app from the Play store
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This is not right though, it basically limits or possible connections... This is terrible...