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Hi,
I am unable to use 3G on htc desire. I have set the correct APN. The problem is that when I choose "WCDMA" as the network mode, it automatically switches back to "GSM only". The place where I live has no problem with 3G availability. I feel the problem lies more with my handset. Can someone please help ? Is there anything that I can do to get rid of this problem. My phone has lost its warranty since I unlocked it.
Have you tried any other operator sim card? It's a good troubleshooting to do when this kind of problems happen...
Had problems like that before and it was an incorrect APN setup.
Thanks for getting back. I tried with a different sim and a different operator. They were also not successful. APN setting is perfectly right for the current sim. The APN settings were given by the operator.
rkk1 said:
Thanks for getting back. I tried with a different sim and a different operator. They were also not successful. APN setting is perfectly right for the current sim. The APN settings were given by the operator.
Click to expand...
Click to collapse
Are you using any kind of widget to switch APN on / off, 2G/3g ?... I noticed that for example, Widgetsoid can mess with 3g connection so much that sometimes you need to remove it and reboot the phone so you can get things working again.
Try using another SIM card too. It may give you a clue on what's going on: wrong settings / card with no data activated / etc ...
I am not using any widget to turn on/off the 3g. EDGE services work on my mobile while 3G is not working. If I use the sim card on to a different mobile, 3G works fine without any problem. Tried using another sim card with 3G data activated and that also did not work fine for me on HTC Desire.
Hey guys, I recently unlocked and rooted my Infuse 4G from ATT
Im currently living in Panama and using CLARO, I got the correct APN settings,and everything, and the internet works.. "Sometimes" I have gone to the store to obtain help incase it was something on their network, but there is nothing wrong with the network, Next I tied Replacing my sim into my friend who just got the Galaxy S 2, And it worked fine.
The problem In my case seems to be That I cannot maintain a stable Data Connection, It keeps dropping and activating back randomly, if I reboot the phone it will bring data back to it 75% of the time.. but only for a short period.. maybe 5-10 mins at most, then it disappears again.
Im just wondering if anyone that is using the Infuse 4g in a foreign country has or is experiencing a similar issue, or if anyone can explain why this is happening and if there is a way to fix it.
Im waiting for Infused to come back up to put gingerbread on the phone and hopefully fix this issue.. but I fear it will require more.
To answer my own question I found a solution and testing a second
**Just want to add when I say toggle Softkey, I mean the button to the far left at the bottom**
Solution#1 to get Infuse 4G DATA working on Claro Network Panama:
Goto phone type *#*#197328640#*#*
Goto Debug-->PHONE CONTROL-->NETWORK CONTROL-->BAND SELECTION-->GSM BANDS-->GSM 1900-->Toggle Soft Key-->back-->toggle soft key-->END
This will give you a stable EDGE connection on the Infuse 4G
I will post a possible 3G fix after I have tested the setting for more than a day.
OK so Im pretty confident I got the 3G working now, if you experience this issue of losing Data on the network in other foreign countries to USA/CANADA this might help you out aswell.
**Just want to add when I say toggle Softkey, I mean the button to the far left at the bottom**
So again goto phone dial *#*#197328640#*#*
Goto DEBUG SCREEN-->PHONE CONTROL-->HSPA CAT CONTROL-->HSDPA DISABLE-->Toggle soft key-->Back-->toggle soft key-->END
If you followed my steps to gain access to EDGE you must do this also
DEBUG SCREEN--> PHONE CONTROL --> NETWORK CONTROL -->BAND SELECTION --> AUTOMATIC --> TOGGLE SOFT KEY --> BACK--> TOGGLE SOFT KEY --> END
so that you can access the other bands for 3G
Hope this helps people.
Also Would like to Add that Im using INFUSED v2.0.4 http://forum.xda-developers.com/showthread.php?t=1220088
and I switched to the ROGERS MODEM http://forum.xda-developers.com/showthread.php?t=1173704
With these settings applied.
The other way around this is if you install the Infused ROM it'll give you the option to manually lock to the network. The AT&T ROM has ATT roaming partner preference built in... super annoying, but is what it is. I had issues where putting in a foreign SIM I could only attach to networks AT&T had roaming agreeements with even though it wasn't an ATT sim and the non-ATT stock ROM solved it for me.
I saw network locking also in the debug menu, is that what you are talking about?
I cannot find any network locking within the normal menus.. if there is could you guide me to it please.
well I tried the lock via the debug menu.. and did not work when I enabled HSDPA.. maybe the issue isnt a foreign carrier issue or combination of a foreign carrier or just the fact that its a carrier that offer 4G but only on contract.
I was speaking to a friend last night, and he said when he was in the US he was experiencing a similar problem with ATT and the people at ATT said the phone will experience these issues on networks that have the ability of 4G or the HSDPA+ higher speeds since we know that its not real 4G.. so the phone attempts to connect or do whatever it does to obtain those higher speeds of HSDPA+, but is being refused by the network because you need to be on contract or have it enabled.. which then in turn causes it to disconnect all together from the data network.
So it made sense to disable to the HSDPA in the scenario.. I might add that by doing this on CLARO you do not get the full 3G experience its slower from about 2Mbit down to .50 Mbit but its still better than edge. and the HSUPA works fine with a 2Mbit Upload.
Im going to obtain a contracted SIM today with 4G enabled.. and remove all the steps I listed above to confirm that this is actually case.
I will post my results when I get the chip.
Hi,
I have a Nexus S I9023 with baseband I9023XXKI1
Provider is Telenet in Belgium, which is a full MVNO with its own MNC
When running any Gingerbread version, the phone works fine when going out of the country, and returning.
But with any ICS rom (stock or CyanogenMod) the phone will not be able to connect to any international providers, when my providers SIM is installed. But when I stick my providers SIM into another phone the SIM will switch over, after which I can put it back into my Nexus S and I can roam to any other international provider without problems, but the phone will not switch back to my own provider when I get back into the country. At this point I again have to put the Telenet SIM into another phone to force it out of roaming mode after which I can put it back into my Nexus S and it works again on my own provider.
I also tried with another Telenet SIM and had the exact same problem, so it is not a problem with the specific SIM itself. But when I stick in a non-Telenet SIM it does switch to roaming and non-roaming without problems. So it clearly is a combination of the ICS ROM with the Telenet SIM.
The only other thing I found is that the MNC code in apns-conf.xml is wrong for Telenet. It is listed as MNC=10 which used to be correct until sometime last year when everyone was issued a new SIM with MNC=05. But with a custom APN setup mobile data works fine.
If anyone has any idea how I could solve this issue, I would love to hear about it!
Cant Activate/Deactivate International Call Roaming on Nexus S.
Hi,
Same issue here, mine is Nexus S, running ICS 4.0.4, baseband version I9020XXKI1. I am not able to make calls in roaming. I spoke to my provider (O2 Germany) and they say that, I have to deactivate the lock (Lock to activate roaming). I haven't found any way to unlock this service. I have not tried what the OP has mentioned in his post (i.e., to put the sim into another phone and then try back in Nexus S). But I would like to know, how can I Activate or Deactivate the roaming lock ??
Thanks,
Cheers!!
esunny said:
Hi,
Same issue here, mine is Nexus S, running ICS 4.0.4, baseband version I9020XXKI1. I am not able to make calls in roaming. I spoke to my provider (O2 Germany) and they say that, I have to deactivate the lock (Lock to activate roaming). I haven't found any way to unlock this service. I have not tried what the OP has mentioned in his post (i.e., to put the sim into another phone and then try back in Nexus S). But I would like to know, how can I Activate or Deactivate the roaming lock ??
Thanks,
Cheers!!
Click to expand...
Click to collapse
The only roaming feature you can enable is for Data. This has no effect on roaming for normal phone usage.
You can change this setting under "System Settings" -> "More..." (under Wireless & Networks) -> "Mobile Networks"
Here you will find a "Data roaming" option, and possibly a "National data roaming" option
I have a Desire Z with Android 4.0.4 and Telenet for the cellphone also. I noticed I have to activate the romaing in Belgium to have the data connection which is strange as I'm in Belgium. Now I hear that they can be issues calling/sending sms abroad... I'll see when I'll be in Croatia.
I activated for the moment all the option (data roaming, national roaming) for the moment, nothing more strange than having the romaing activated and the 'R' in the network signal.
National Roaming seems to be needed on some phones, since the Telenet SIM swap last year to get a data connection in Belgium. On my own Nexus S phone I don't have the problem. But on my wife's SE Xperia Mini Pro (2011 model) with stock Android 2.3.4 it does have this issue.
The old sim used MNC=10, while the new SIM uses MNC=05 and it seems that some phones have some kind of issue with that.
MNC is the Mobile Network Code, which together with the MCC (Mobile Country Code) forms a identifier per provider.
http://en.wikipedia.org/wiki/Mobile_Network_Code
I narrowed down the issue somewhat.
Basically my prior workaround that the SIM needed to be swapped to another phone to force the network to connect was false.
What actually needs to happen to force the phone to enter or exit roaming is to pull the battery.
Rebooting the phone, or shutting it down and rebooting (cold boot) does not make a difference, the battery needs to be pulled and then the phone will switch networks.
I found this by accident, because I was out of the country and it was as normal refusing to switch to roaming mode. Then the battery died and I connected power to the phone and booted it, and it suddenly connected to a foreign provider in roaming mode.
Getting back to Belgium, it again refused to switch back, so I verified it by just pulling out the battery and putting it back and the phone successfully was able to connect to Telenet again.
In other words, some component needs to be reset for it to successfully switch to roaming and back. This component does not get turned off when the phone is turned off, so the battery needs to be pulled.
I want to use a FreedomPop SIM card (T-Mobile network, I think) in my G900P for cell service, but I can't seem to get it to work.
With the phone stock, it displays the message "Invalid SIM" after inserting the SIM card. Switching to GSM doesn't seem to help. Also in the stock state, the phone displays "UNBLOCK" under the *#0011# info, and never asks for an MSL code (which I have).
I rooted the phone and put Cyanogenmod 13 on it, but still can't get GSM service. Cyanogenmod doesn't warn that the sim is "invalid," but even after setting to GSM mode (using *#*#4636#*#*), the network just won't connect.
(I also manually set the APN with everything I've tried.)
Is this phone even capable of using its SIM slot for GSM?
Thanks
lemminman said:
I want to use a FreedomPop SIM card (T-Mobile network, I think) in my G900P for cell service, but I can't seem to get it to work.
With the phone stock, it displays the message "Invalid SIM" after inserting the SIM card. Switching to GSM doesn't seem to help. Also in the stock state, the phone displays "UNBLOCK" under the *#0011# info, and never asks for an MSL code (which I have).
I rooted the phone and put Cyanogenmod 13 on it, but still can't get GSM service. Cyanogenmod doesn't warn that the sim is "invalid," but even after setting to GSM mode (using *#*#4636#*#*), the network just won't connect.
(I also manually set the APN with everything I've tried.)
Is this phone even capable of using its SIM slot for GSM?
Thanks
Click to expand...
Click to collapse
If you don't mind temporarily flashing back to stock..
http://forum.xda-developers.com/showthread.php?t=3405682
SM-900P CM13
lemminman said:
I want to use a FreedomPop SIM card (T-Mobile network, I think) in my G900P for cell service, but I can't seem to get it to work.
With the phone stock, it displays the message "Invalid SIM" after inserting the SIM card. Switching to GSM doesn't seem to help. Also in the stock state, the phone displays "UNBLOCK" under the *#0011# info, and never asks for an MSL code (which I have).
I rooted the phone and put Cyanogenmod 13 on it, but still can't get GSM service. Cyanogenmod doesn't warn that the sim is "invalid," but even after setting to GSM mode (using *#*#4636#*#*), the network just won't connect.
(I also manually set the APN with everything I've tried.)
Is this phone even capable of using its SIM slot for GSM?
Thanks
Click to expand...
Click to collapse
If the phone isn't stolen and is paid off, simply call sprint for a domestic unlock. i just called about an hour ago to unlock an s5.
and if theyre being obstinate, you can always go to idoneapps.com and purchase an unlock there. Ive used it twice and it worked flawlessly, plus their unlock apk autoselects the apn for you and allows for debranding and data icon changing. I know the last 2 things can be done via other methods, but they just make it a 1 click thing. Pretty nice app
---------- Post added at 12:38 PM ---------- Previous post was at 12:32 PM ----------
almost forgot, @stifilz can do the unlock too. He doesnt charge, but a donation to him for doing it is always a good thing
Hi all. I just bought a S10e (G970U, Snapdragon) from China in order to use it in Spain, with Orange as a carrier. Once I set it up, everything worked fine for about 20 seconds. After that, the mobile data locked down. When I try to turn it up again the device says: "Security policy prevents use of mobile data". I tried to factory reset it several times, try different google accounts, try different SIMs, erase the data from some SIM- and network-related apps, but nothing changes. I guess that this has something to do with Samsung Knox.
What should I do? Is recommendable to contact Samsung support? Can I flash another firmware/ROM that fix this issue? Thanks a lot, any help is appreciated.
PS: Calls and SMS are also locked.
@txordi
Maybe this will help?
https://www.samsung.com/nz/support/mobile-devices/security-policy-updates/
djg269 said:
@txordi
Maybe this will help?
https://www.samsung.com/nz/support/mobile-devices/security-policy-updates/
Click to expand...
Click to collapse
Hi. Thanks a lot for your help! I tried it and nothing changed. Indeed, the security policies were already updated out of the box...
I had the same problem. I had a signal but could not send/receive SMS or calls. After talking with carrier tech support and Samsung, I went to a UbreakIfix store, where they told me the 10e phones have a problem with the antenna on the motherboard. They said I needed to send the phone back to Samsung to get the mobo replaced. I just sent it back to the seller and bought an S20.
Also on S10+
I'm having the same problem on my GM-975U1 S10+. Basically mobile data and texting works long enough to authenticate into the Samsung account during setup, but once the android home screen appears after finishing the setup I can't place any calls and trying to enable mobile data gives a "Security policy prevents use of mobile data" error when attempting to enable it. Neither AT&T or Samsung have given instructions on how this can be fixed. It's behaving similarly to if the phone's IMEI were on a blacklist, but I get immediately shut out once the setup process completes.
kriegersaurusrex said:
I'm having the same problem on my GM-975U1 S10+. Basically mobile data and texting works long enough to authenticate into the Samsung account during setup, but once the android home screen appears after finishing the setup I can't place any calls and trying to enable mobile data gives a "Security policy prevents use of mobile data" error when attempting to enable it. Neither AT&T or Samsung have given instructions on how this can be fixed. It's behaving similarly to if the phone's IMEI were on a blacklist, but I get immediately shut out once the setup process completes.
Click to expand...
Click to collapse
have you found any solution yet I am having same issue with my samsung s10e and I don't even understand what app or policy is preventing me from making calls. BTW I am using clean esn phone. As soon as I pass the setup screen LTE signal goes away and it stops working.
aakashpsp said:
have you found any solution yet I am having same issue with my samsung s10e and I don't even understand what app or policy is preventing me from making calls. BTW I am using clean esn phone. As soon as I pass the setup screen LTE signal goes away and it stops working.
Click to expand...
Click to collapse
I haven't found one yet either. Apparently the phone I purchased is locked to Tracphone after paying for an IMEI lookup (got scammed by an ebay seller who said it was the unlocked model), and the phone isn't able to do calls/mobile data properly except during the initial setup. Tried with SIM cards from two different US providers that both aren't working on it, and can connect to wifi just fine. Can see in the phone information test menu by dialing *#*#4636#*#* that my sim is being recognized, shows my phone number and IMSI, can switch between network types and see the cell towers it connects to; but isn't able to send/receive calls or mobile data. It fails the Ping test with 'Fail(2)' and HTTP Client Test with 'Fail: IOException'.
It's also showing that the phone receives a call inside of the Service Mode menu by dialing *#197328640# and going to '[1] BASIC INFORMATION'. Placing a call from another phone shows that my S10+ is picking up LTE bands and has some RF parameters that change when my number is being dialed, but don't get the option to pick up the call. It's also able to detect that I have a voicemail but am not able to dial in and listen to it. The Tx Pwr says '-- dBm' so I ultimately can't tell if it's a software or a hardware problem.
kriegersaurusrex said:
I haven't found one yet either. Apparently the phone I purchased is locked to Tracphone after paying for an IMEI lookup (got scammed by an ebay seller who said it was the unlocked model), and the phone isn't able to do calls/mobile data properly except during the initial setup. Tried with SIM cards from two different US providers that both aren't working on it, and can connect to wifi just fine. Can see in the phone information test menu by dialing *#*#4636#*#* that my sim is being recognized, shows my phone number and IMSI, can switch between network types and see the cell towers it connects to; but isn't able to send/receive calls or mobile data. It fails the Ping test with 'Fail(2)' and HTTP Client Test with 'Fail: IOException'.
It's also showing that the phone receives a call inside of the Service Mode menu by dialing *#197328640# and going to '[1] BASIC INFORMATION'. Placing a call from another phone shows that my S10+ is picking up LTE bands and has some RF parameters that change when my number is being dialed, but don't get the option to pick up the call. It's also able to detect that I have a voicemail but am not able to dial in and listen to it. The Tx Pwr says '-- dBm' so I ultimately can't tell if it's a software or a hardware problem.
Click to expand...
Click to collapse
I am facing the same exact issue my sim number it shows inside the phone and signal I am getting is in negative dbm also my sim receives calls during the initial setup and as soon as the setup completes the LTE network goes away call gives error " call not sent". I am irritated by this now and there is no root available for this model so I cannot flash any custom rom to check. I have seen many people have same issue but no solution yet.
If your phone locked to a particular network, ie TracFone,AT&T, TMobile, Cricket, etc, then that is only network it will work on. Doesn't matter what custom ROM you use. You will need to get the network unlock code either from the network it's locked to or from a reputable online unlock site. Good luck getting it unlocked.
riggerman0421 said:
If your phone locked to a particular network, ie TracFone,AT&T, TMobile, Cricket, etc, then that is only network it will work on. Doesn't matter what custom ROM you use. You will need to get the network unlock code either from the network it's locked to or from a reputable online unlock site. Good luck getting it unlocked.
Click to expand...
Click to collapse
my device is already unlocked. It is not an unlocked phone issue. This is some stupid policy which is preventing from making calls or using data. Maybe this policy is saved in EFS don't know.
aakashpsp said:
my device is already unlocked. It is not an unlocked phone issue. This is some stupid policy which is preventing from making calls or using data. Maybe this policy is saved in EFS don't know.
Click to expand...
Click to collapse
That's strange, it's acting exactly like a network locked device. When you say it's unlocked, are referring to the bootloader or network? Did you buy it new, unlocked from a reputable dealer? Check the firmware and make sure it is unlocked. There are other thread here with the same issue and message, those are all network locked phones.
riggerman0421 said:
That's strange, it's acting exactly like a network locked device. When you say it's unlocked, are referring to the bootloader or network? Did you buy it new, unlocked from a reputable dealer? Check the firmware and make sure it is unlocked. There are other thread here with the same issue and message, those are all network locked phones.
Click to expand...
Click to collapse
I don't know I bought it from mercari that seller told me it is tmobile unlocked, but while checking I found the model number is G970U1. csc is XAA and binary U4. Bootloader is locked. Networks seems to be unlocked as when I put it my sim card it works till initial setup screen and then stops working. I searched it maybe locked to Consumercellular but is there any way I can unlock it ? I didn't find anything online.
Sounds like the seller lied to you.
Is there any way to unlock CC device ? I am on Binary u4. I am able to flash both g970u and g970u1 firmware but no success.
riggerman0421 said:
That's strange, it's acting exactly like a network locked device. When you say it's unlocked, are referring to the bootloader or network? Did you buy it new, unlocked from a reputable dealer? Check the firmware and make sure it is unlocked. There are other thread here with the same issue and message, those are all network locked phones.
Click to expand...
Click to collapse
My S10+ model G975U is network unlocked, with the bootloader locked. I bought a network unlock code, but am getting the same behavior where the intial setup allows me to sign into my Samsung account when putting in both an ATT and T-Mobile sim card. I've also tried reflashing it with several different firmwares both carrier locked and unlocked, but this phone has been sitting in my drawer for the past month since it's unusable. Probably will end up trading it in since I was scammed by the random ebay seller I bought this from.
kriegersaurusrex said:
My S10+ model G975U is network unlocked, with the bootloader locked. I bought a network unlock code, but am getting the same behavior where the intial setup allows me to sign into my Samsung account when putting in both an ATT and T-Mobile sim card. I've also tried reflashing it with several different firmwares both carrier locked and unlocked, but this phone has been sitting in my drawer for the past month since it's unusable. Probably will end up trading it in since I was scammed by the random ebay seller I bought this from.
Click to expand...
Click to collapse
I'm having the exact same issue. Bought s10+ off ebay for 200 locked to consumer cellular. Bought an unlock code. It said unlock successful. Now get this error with any sim. It will show lte during initial setup only.
It will show that it's at&t or verizon when I put the sim in and populate the proper apn settings.
Before the unlock I would get the sim not provisioned error.
I did have to look up the dial code to make the unlock code window appear.
Now i can't actually use any service and i get the security policy error.
Finally was able to find the xaa firmware which seems to be the exact firmware on it.
Then lash that as no other u1 firmware would flash.
txordi said:
Hi all. I just bought a S10e (G970U, Snapdragon) from China in order to use it in Spain, with Orange as a carrier. Once I set it up, everything worked fine for about 20 seconds. After that, the mobile data locked down. When I try to turn it up again the device says: "Security policy prevents use of mobile data". I tried to factory reset it several times, try different google accounts, try different SIMs, erase the data from some SIM- and network-related apps, but nothing changes. I guess that this has something to do with Samsung Knox.
What should I do? Is recommendable to contact Samsung support? Can I flash another firmware/ROM that fix this issue? Thanks a lot, any help is appreciated.
PS: Calls and SMS are also locked.
Click to expand...
Click to collapse
I'm from the Philippines and my niece phone is network lock ( Smart Telecom ) I can use the sim 2 slot since it's a dual sim using another network Simcard, unfortunately, it won't allow me to use mobile data so I tried unlocking it *#272*IMEI FROM SIM 1 SLOT# so I choose GLB for globe network or XTC to openline so here's what happens, it got reset so upon set up yeah other sim works have data but when finish setting up everything I can use data again on other network and a message pop up
Security policy prevents use of mobile data
so I guess even it allows other network Simcard on network lock phone it needs to be unlocked by the network where it was lock
Did anyone ever find a solution to this problem?
I'm having the exact same problem with a new samsung s10e I just bought. Security policy prevents use of mobile data, and no calls or sms will go through. LTE shows on setup, but disappears as soon as setup is complete.
I initially assumed the phone was locked, but the seller is reputable and insists it is unlocked. It's also a U1 model, and an IMEI lookup appears to show that it's unlocked. In connection settings under mobile networks, i'm also able to select multiple carriers, so I'm inclined to believe that the device really is unlocked.
Anybody here ever manage to solve this problem, or am I SOL? I would hate to be out 200 bucks on this phone since i'm past the return window.
I am having same isuue with samsung not S20 ultra (SM-N986U1) I bought the mobile and its unlocked the seller send to me photo for the check screen and its open USA but can not use mobile data and make any calls when a make a call the call ended and give me screen call not sent
aniratepanda said:
Did anyone ever find a solution to this problem?
I'm having the exact same problem with a new samsung s10e I just bought. Security policy prevents use of mobile data, and no calls or sms will go through. LTE shows on setup, but disappears as soon as setup is complete.
I initially assumed the phone was locked, but the seller is reputable and insists it is unlocked. It's also a U1 model, and an IMEI lookup appears to show that it's unlocked. In connection settings under mobile networks, i'm also able to select multiple carriers, so I'm inclined to believe that the device really is unlocked.
Anybody here ever manage to solve this problem, or am I SOL? I would hate to be out 200 bucks on this phone since i'm past the return window.
Click to expand...
Click to collapse
esca91 said:
Hello everybody,
Could you share firmware of Sm-r900 ?
Thanls All for good work !
Bests regards.
Click to expand...
Click to collapse
mosaad627 said:
I am having same isuue with samsung not S20 ultra (SM-N986U1) I bought the mobile and its unlocked the seller send to me photo for the check screen and its open USA but can not use mobile data and make any calls when a make a call the call ended and give me screen call not sent
Click to expand...
Click to collapse
Yes, there is a solution, but only from an experienced professional 3rd party business, which means there's no free solution