I have a Chinese clone of HTC Desire(G7i) dual sim, which was purchased from Ebay. It works perfectly in UAE and the phone is also good and very nice. Last week I tried to root my phone with Ginger Break and it was success. Then I tried a custom rom from XDA-developers.com. Unfortunately I forgot to back up the imei of the phone. After installation of the rom, it works better than before except the Calling and message services. The mobile is connected with my network and it shows full signal strength. At the same time I can't make or recieve calls and sms. It shows "invalied IMEI" message on the main screen. How can i retrieve the imei to the system? I know the original IMEI's, but I don't know how to setup it. Please help me
Two weeks before I success fully restore the IMEI of my phone using the XDA-developers.com tips. Thanks for the post.
do this
shimarpl said:
I have a Chinese clone of HTC Desire(G7i) dual sim, which was purchased from Ebay. It works perfectly in UAE and the phone is also good and very nice. Last week I tried to root my phone with Ginger Break and it was success. Then I tried a custom rom from XDA-developers.com. Unfortunately I forgot to back up the imei of the phone. After installation of the rom, it works better than before except the Calling and message services. The mobile is connected with my network and it shows full signal strength. At the same time I can't make or recieve calls and sms. It shows "invalied IMEI" message on the main screen. How can i retrieve the imei to the system? I know the original IMEI's, but I don't know how to setup it. Please help me
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talkingmobi.com
/write-imei-number-android-phone-fastcardtech/
I'm new to this forum, so if I've posted this in the wrong place, please move it.
I have an AT&T branded Galaxy SII i727 Skyrocket (4G LTE). It is not unlocked, has not been rooted and runs AT&T firmware. The phone was purchased independent of a contract (eBay). I am a very light user, but I find it convenient to have a data plan and initially used AT&T GoPhone prepaid. Phone and SMS worked properly, but some tweaking was needed to get data to work properly. After a few months, I switched to Consumer Cellular (AT&T MVNO). Initially data did not work, but CC's tech support gave me revised Access Point Name settings and all became as it should be.
Last week (or maybe the week before), I finally gave in to the phone's insistence on updating to a later firmware version. From then on, I have been unable to get data to work at all. the 4G symbol no longer appears (although I doubt it was ever actually a 4G connection) and any App that requires a data connection (web, email, etc) complains about no connection. WiFi, on the other hand, works properly with all such Apps.
Here are the specifics on my phone:
Samsung SGH-I727
Android 4.04
Baseband Version I727UCLI3
Kernel Version:
3.0.8-1127534
[email protected]#1
SMPPREEMPT Thu Sep 27 23:12:45 KST 2012
2012Build number IMM76D.UCLI3
My questions are these:
1. Has anyone had this sort of problem (data on CC fails after upgrade)? If so, how did you solve it?
2. Was this problem caused by the upgrade? If not, what other issues might have caused it and how can they be corrected?
3. How can I revert the firmware to the previous version to confirm the cause and/or resolve it?
4. What else can I do to get my data connection back?
I am not particularly Android savvy, but I am not shy about making changes in settings and/or installing fixes.
Thanks,
Tenaya
I am having the same problem. Same phone set up. I switched from AT&T and installed a Net10 sim on there bring your on phone. Installed been working great. Then it just stopped no data connection. 3g 4g no signal nothing. I have been searching for solution while reading the noobie guides. still looking for someone, a thread, or just a link to where i might start to solve this problem.
Check your apn settings and make sure they are correct for the SIM card. Check with the carrier for the correct settings.
APN settings, I almost guarantee it. Check to make sure they are correct for your carrier
Setting > more > mobile networks > access point names >
yes for anyone else having this issue I had the same issue after flashing a new ROM and this was where the problem was.
Hi guys!
I just bought an unlocked gold S6 (32gb) and tested my T-mobile sim on it.
It didn't worked, I can only make calls and receive text messages. The sim status says that it is on service, but disconnected from the network, so I can't use my data. Can anyone help me with this? My data is on, and the phone is "international use only" (and I think it's what I need to fix but I don't know how). I tried everything from restarting it, factory reset, and called t-mobile support (they didn't helped at all), please help. My device isn't rooted or any of that, but if need to I will.
Thanks in advance!
Sounds like you maybe have to enter correct apn settings into phone?
Morning all
We have an issue with my wife's S6(UK, stock up to date software, EE network)
A day ago if she tried to make a call and she just got a message stating 'Not registered on network. She's not getting any incoming calls or text messages either. And not able to use mobile data (wi-fi ok)
Tried all of the normal things, restarts, manually selecting network etc. The only thing that solves the issue is to select 2G only in the network settings, then calls and texts are ok, but obviously mobile data is non existent.
We have been though the troubleshooting with EE on the phone, part of this was to try another SIM which did not solve it, so we know the problem is with the phone.
Also done full factory reset last night, did not help at all.
Any ideas apart from sending it for repair, as EE are telling us?
Not wanting to root or modify in any way that is going to void warranty
Thanks in advance
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/
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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esca91 said:
Hello everybody,
Could you share firmware of Sm-r900 ?
Thanls All for good work !
Bests regards.
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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
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Click to collapse
Yes, there is a solution, but only from an experienced professional 3rd party business, which means there's no free solution