[Q] G2 won't connect to cell network after unlocking - G2 and Desire Z Q&A, Help & Troubleshooting

I unlocked my G2 before leaving on trip to Europe and after the unlock process has finished phone now can't connect to gsm network at all. I used 3 different sim cards including t-mobile original sim card nothing helps. Also did hard reset and reflashed with OOB ROM from dev thread, nothing helps. Anybody has the same issue? Any other suggestions?

hmfic said:
I unlocked my G2 before leaving on trip to Europe and after the unlock process has finished phone now can't connect to gsm network at all. I used 3 different sim cards including t-mobile original sim card nothing helps. Also did hard reset and reflashed with OOB ROM from dev thread, nothing helps. Anybody has the same issue? Any other suggestions?
Click to expand...
Click to collapse
Dear friend, my issue exactly. No connection after unlocking. I have tried virtualy anything (different sims, firmware reinstallation, reboots, reset ) nothing happens. As far as i can tell after unlocking the phone cannot read properly no sim at all. It behaves asz a phone whith no sim in it. Try open your phone with no sim and try search for networks. You will get the same error message. I have contacted HTC and awaiting an answer. Where did you found the unlock code?

After you entered the unlock code, you got a pop up message saying something to the effect of "Unlock code successfully entered, rebooting device." Did the device instantly reboot for you or did it take a while? I'm curious as my device just sat there for five minutes before rebooting.
Edit: I should note that I cannot test my device with my foreign SIMs right now, but my T-Mobile connection is working fine post-unlock. Also, it might help to read through this thread. More anecdotal experiences with G2 on other networks in there.

Doesn't work period, the T-Mobile sim card doesn't work either anymore.

jashsu said:
After you entered the unlock code, you got a pop up message saying something to the effect of "Unlock code successfully entered, rebooting device." Did the device instantly reboot for you or did it take a while? I'm curious as my device just sat there for five minutes before rebooting.
Edit: I should note that I cannot test my device with my foreign SIMs right now, but my T-Mobile connection is working fine post-unlock. Also, it might help to read through this thread. More anecdotal experiences with G2 on other networks in there.
Click to expand...
Click to collapse
The device took about 1 minute or so to reboot. And after that not even the original TMo card is working. Where did u get your unlock codes?

gpou said:
The device took about 1 minute or so to reboot. And after that not even the original TMo card is working. Where did u get your unlock codes?
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Click to collapse
I didn't mention because I assumed that as long as it works (meaning the popup said the unlock was successfully entered) then it doesn't matter what the source was. I got my code from T-Mobile, who in turn requests the codes from HTC.
I unlocked by inserting a friend's AT&T sim. Strangely, the device didn't give me the unlock dialog at all when I inserted a Chunghwa Telecom (Taiwan) sim. It couldn't register to any networks when my CHT sim was inserted. However, I did not have a "no sim inserted" error in my notification bar, so it's not the same as your situation, I think.

I have tried every solution i can think with no results. I just hope it isn't a hardware fault a it is very difficult for me to return the phone to T-mobile and get a new one

jashsu said:
I didn't mention because I assumed that as long as it works (meaning the popup said the unlock was successfully entered) then it doesn't matter what the source was. I got my code from T-Mobile, who in turn requests the codes from HTC.
I unlocked by inserting a friend's AT&T sim. Strangely, the device didn't give me the unlock dialog at all when I inserted a Chunghwa Telecom (Taiwan) sim. It couldn't register to any networks when my CHT sim was inserted. However, I did not have a "no sim inserted" error in my notification bar, so it's not the same as your situation, I think.
Click to expand...
Click to collapse
Its the same. I dont get a no sim error. Sim is found. But network search is dead

Try looking up the APN settings for your network and enter them under Wireless and Networks under settings. I had a similar problem with AT&T when I first unlocked. I had signal but no data.

We get no GSM signal whatsoever. Just shows the "x" next to the cellphone signal. Also getting to *#*#4636#*#* menu shows that both CID and LOC fields are unknown. I also tried to do the sim lock from the recovery menu (press volume down with power key) and it gave me errors as some files are missing, so I'm guessing the unlock did happen but it didn't write something somewhere.

hmfic said:
We get no GSM signal whatsoever. Just shows the "x" next to the cellphone signal. Also getting to *#*#4636#*#* menu shows that both CID and LOC fields are unknown. I also tried to do the sim lock from the recovery menu (press volume down with power key) and it gave me errors as some files are missing, so I'm guessing the unlock did happen but it didn't write something somewhere.
Click to expand...
Click to collapse
Excactly my friend. It cannot read properly the sim properties so it cannot find MCC/MNC and CID of our networks. The error you get in SIMLOCK IS
MCCMNC FILE MISSING
CID FILE MISSING
And another thing i noticed. In a properly working android phone when you create a new apn the MCC and MNC fields are automaticaly filled. But in our case they are blank...

rburg45 said:
Try looking up the APN settings for your network and enter them under Wireless and Networks under settings. I had a similar problem with AT&T when I first unlocked. I had signal but no data.
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Click to collapse
Your problem isn't similar at all. These guys can't get signal or data. Network scan turns up nothing.

jashsu said:
Your problem isn't similar at all. These guys can't get signal or data. Network scan turns up nothing.
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Click to collapse
To be exact network search returns an ERROR.

Yeah my bad, didn't realize their problem was so severe. :/

I have a similar problem except mine is temporary. When I unlock the phone I have no connection. Shows an X on the tray. Try enabling airplane mode and disabling it and still the same. I have to reboot the phone in order for it to connect again. It's only happened twice so far, but was annoying. Hope it doesn't get worse.
I am still using the old SIM card from my Cliq, which was in my Sidekick before that. If it happens one more time I'm going to install the new SIM that came with the phone and see if that helps.
Edit:
Nevermind... My phone is not unlocked. I read the post wrong.

Unfortunately no solution yet. I have read here that an OTA is rolling out. Let's hope it could something when received

How you plan on getting OTA if our phones are not even connected to the cellnetwork??? Just leave it on with wifi???

wifi or someone will post a download link.
So far pleople with the same problem as us are increasing.

D/RILJ ( 5176): [0085]> QUERY_AVAILABLE_NETWORKS
D/HTC_RIL ( 1350): ril_func_get_avail_networks():called
D/HTC_RIL ( 1350): (t=1286918594)>> AT+COPS=?\r
D/HTC_RIL ( 1350): (t=1286918594)<< +CME ERROR: 30\r
D/RILJ ( 5176): [0085]< QUERY_AVAILABLE_NETWORKS error: com.android.internal.telephony.CommandException: G
ENERIC_FAILURE
This is the error through logcat for RADIO

Having the same issue
I noticed in addition that there is a difference i the SIM-lock is enabled or not.
When it is not enabled the "SIM error" icon does not appear and the radio symbol is an "x"
When it is enabled I am asked for the PIN at boot and after I enter it the "SIM error" icon is also shown.
So at least the phone seams to be still reading the SIM but that's about it.

Related

[Q] data connection problem

Hi,
I'm from Germany and went on Holiday recently to Singapore and Australia. There I bought prepaid SIM cards for internet access. Now that I've returned and use my german SIM again, my phone can't enable the data connection anymore.
I've attached the *#*#4636#*#* phone info screen. I already tried factory reset, reflashed a radio image and new rom - and still the problem remains. I also tried all the different radio band settings (see second screenshot). It always says "fail because Radio Not Available).
I didn't flash or change anything on my holiday trip, so I'm really out of ideas. I hope someone can help me.
Thanks
Björn
Set network type to GSM and try again.
SwiftKeyed from dGB with Transparent XDA App
error message stays the same, also tried the other network type options, always the same
I just tried a SIM from a firend of mine, and with that one everything works normal.
So it seems to be a problem with the sim card. I guess I will just get a replacement SIM.

No Service Selected network (AT&T) unavailable! No Signal

I flashed in JB AOKP was working fine all of last night. I also entered my SIM Pin or unlock code. The first time I put in an 8 digit unlock code I have. Second time it prompted me I skipped it. I'm pretty sure it was the security pin and not the network unlock. I don't have any other phone's micro SIM I can insert into my phone and a local phone store's T Mobile SIM produced no different of a result except for replacing AT&T with T-Mobile (I have not however put my microSIM into another phone...because I don't have another micro sim phone). Reboot phone this morning and it's no longer working. Tried to enable 2g. Nothing. Tried a battery pull with the phone on, pulling the SIM (same message with SIM pulled out),
Wifi works
This sucks big time ;(
Note: I am pretty sure I did not network lock the phone or anything because the SIM prompt that came up when I flashed JB did not ask me for my unlock or network code (I would have known). The first time I entered that code was 'just in case it's asking me to unlock" but why would it ask me a second time then? So I doubt it was prompting me for a network unlock code. The prompt from youtube videos was different too.
Also APN is empty, but I think that's becasue I'm not connected to any network
Pressing Available networks brings up AT&T AT&T AT&T T-Mobile T-Mobile "311660" pressing any of them you get a quick window connect "too fast" goes back to/stays in available networks screen and says "Can't connect to this network right now. Try again later."
So I added the AOKP and Corresponding kernel yesterday and I mean it was working fine with 4g... apparently this thread says that you need to flash a new radio in some cases when you change kernels?
http://miuiandroid.com/community/threads/no-service-galaxy-s.6529/page-2
zetsui said:
I flashed in JB AOKP was working fine all of last night. I also entered my SIM Pin or unlock code. The first time I put in an 8 digit unlock code I have. Second time it prompted me I skipped it. I'm pretty sure it was the security pin and not the network unlock. I don't have any other phone's micro SIM I can insert into my phone and a local phone store's T Mobile SIM produced no different of a result except for replacing AT&T with T-Mobile (I have not however put my microSIM into another phone...because I don't have another micro sim phone). Reboot phone this morning and it's no longer working. Tried to enable 2g. Nothing. Tried a battery pull with the phone on, pulling the SIM (same message with SIM pulled out),
Wifi works
This sucks big time ;(
Note: I am pretty sure I did not network lock the phone or anything because the SIM prompt that came up when I flashed JB did not ask me for my unlock or network code (I would have known). The first time I entered that code was 'just in case it's asking me to unlock" but why would it ask me a second time then? So I doubt it was prompting me for a network unlock code. The prompt from youtube videos was different too.
Also APN is empty, but I think that's becasue I'm not connected to any network
Pressing Available networks brings up AT&T AT&T AT&T T-Mobile T-Mobile "311660" pressing any of them you get a quick window connect "too fast" goes back to/stays in available networks screen and says "Can't connect to this network right now. Try again later."
Click to expand...
Click to collapse
Pardon my newbness if I'm way off base, but lost IMEI? sounds like the same symptoms I was getting a couple days ago when I flashed CM10.
Kostazu said:
Pardon my newbness if I'm way off base, but lost IMEI? sounds like the same symptoms I was getting a couple days ago when I flashed CM10.
Click to expand...
Click to collapse
...what are you talking about. My IMEI isn't mentioned once in that post. In fact now that you mention it, since people's IMEI changed...nothing like that my phone still has its IMEI
I also did not get a "phone frozen" from entering the wrong code too many times...so I doubt its locked like that. There was a random reboot that I WOKE UP to, but nothing weird...it rebooted randomly but worked finely after that
zetsui said:
...what are you talking about. My IMEI isn't mentioned once in that post. In fact now that you mention it, since people's IMEI changed...nothing like that my phone still has its IMEI
I also did not get a "phone frozen" from entering the wrong code too many times...so I doubt its locked like that. There was a random reboot that I WOKE UP to, but nothing weird...it rebooted randomly but worked finely after that
Click to expand...
Click to collapse
I was proposing the theory that you may have lost your IMEI, since the symptoms you report were very similar to what I was experiencing when I lost mine, however since you still have yours, must be something else, eh?
Kostazu said:
I was proposing the theory that you may have lost your IMEI, since the symptoms you report were very similar to what I was experiencing when I lost mine, however since you still have yours, must be something else, eh?
Click to expand...
Click to collapse
Just flashed an old version of the same rom...still nothing, although this version had 4g lte working for sure gonna try one more flash of the same rom with only some system settings moved around.. I actually need this phone to travel to Europe ;( ffs worst time
Kostazu what was the fix for you?
Ok just flashed Nostalgia which is the stock rom minus bloatware and I get No SIM Insert SIM card (it is in) and when I try to make a call "not registered on network"
zetsui said:
Just flashed an old version of the same rom...still nothing, although this version had 4g lte working for sure gonna try one more flash of the same rom with only some system settings moved around.. I actually need this phone to travel to Europe ;( ffs worst time
Kostazu what was the fix for you?
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Click to collapse
Well, mine was definitely due to a lost imei that happened sometime when flashing.
I did get the network unlock warning thingy twice, and then had no cellular connectivity, which is why I mentioned the lost imei. I restored my nandroid back to stock, then used the method here with a little driver tapdancing to reinject my imei, and that solved my issues, but sounds like you have something else going on.
http://forum.xda-developers.com/showthread.php?t=1801997
If I flash back to stock and no longer have the stock kernel, what is the steps for flashing back then?
1. flash stock kernel
2 fix partitions
3. factory rest/cache/davlik
reboot into oden and flash new image?
Long story short, Don't cut your own microsd..the sim pins on this phone are VERY sensitive and hard to fix/see. Don't bend em.
I am having the same problems right now, I keep on getting " NO SERVICE" - SELECTED NETWORK UNAVAILABLE" Error.
Rebooting doesnt help, flashing modem through CWM doesnt help. I know for a fact that the simcard it good because other apps that I install can read the sim with no problem, and my WIFI is working like a charm.
Someone got a solution for this? This is already like 4 days ongoing, please any help will be appreciated !!
Im having the same no service selected network issue. I can search and find att and the mobile but when I try to have it connect to att that's the error I get. I have an att SIM card in the phone. Sph l720 SIM unlocked, it didn't ask me for an unlock code or anything like that but I also don't get the invalid SIM card error. I've added the main apn from the att website but that doesn't help and the phone is current set to gsm/umts. If anyone has a fix please let me know, thank you.

[Q] APN Problems (CM10)

Hello lovely people,
[Sony Ericsson Xperia Arc, Unlocked BL, CM10, Australia, Optus 3G]
I've been stuck with this problem for a few days, I've been searching stuff everywhere and haven't found a solution. Just randomly I haven't got phone reception or anything and the APN list was empty. I've tried adding the Optus APNs but whenever I touch 'save' it just returns back to the empty APN list. Apparently this was a bug or something for Android 4.0+ So is there no way of adding new APNs?
I've also tried resetting back to the default APN list but it's still empty, and whenever I select the 'Optus 3G' network provider it appears to start "registering on YES OPTUS" but then says "Can't connect to this network now, try again later"
I swapped the Optus sim card with a Telstra sim card and then BOOM 3G reception and a list of APNs. I put the Optus sim card back, and then...nothing.
So anyone have a solution or any advice or something? I'll give you COOKIES!
I found this may help (I'm using the Optus apn settings and found that I have to put 029 for the MNC or the apn gets wiped. So it's not related to the age of the SIM. New ones don't work any better than the old, as far as the MNC value goes.)Note this is from somebody who had same problem as you dont know if it will work as I have a 3 sim worth a try.:fingers-crossed:
I had the same problem, this worked perfectly
http://forum.xda-developers.com/showpost.php?p=34406980&postcount=2
Sorry for the late reply, I haven't had internet access for the last few days.
I tried putting putting the MNC as 029, still no luck :/
And yes, I always click menu then save, but the APN list is still empty.
I have since unrooted my phone and relocked the bootloader and factory reset it back to Android 4.0 and it is still the same thing, although now the phone won't even recognize the SIM card!
OhNo7ate9 said:
Sorry for the late reply, I haven't had internet access for the last few days.
I tried putting putting the MNC as 029, still no luck :/
And yes, I always click menu then save, but the APN list is still empty.
I have since unrooted my phone and relocked the bootloader and factory reset it back to Android 4.0 and it is still the same thing, although now the phone won't even recognize the SIM card!
Click to expand...
Click to collapse
You tried flashing the stock firmware with flashtool?
Sent from my soon-to-be bricked Neo V

"Limited Service" error after improper reset? (MetroPCS version)

So a friend has an unlocked PCS 530 which was rooted and equipped with TWRP. She let a family member borrow it, warned him not to reset it through the Backup & Reset menu just in case something weird would happen. So, of cours,e the first thing that person did was factory reset it through the Backup & Reset menu and, of course, something weird happened. The phone had been unlocked via the MetroPCS Device Unlock app, but it seemed to re-lock after the reset and attempting to run the program again just resulted in a force-close crash. Worse still, the phone now gets no signal and gives only a "Limited Service" error.
I messed with several things to try to coax it back to normalcy and got nowhere, so tonight I decided to just find the proper RUU and go from there. (For completeness' sake, specifically it was RUU_A16_UL_M60_DESIRE_SENSE70GP_TMUS_MetroPCS_US_1.36.1550.14.exe, which seemed to be the same version firmware as what the phone had already been running.) The process completes without error... but not really, because it still doesn't work. It did *something," because the Device Unlock app now finishes, (seemingly) and if you have a Metro or TMo SIM in, you can even run a Search Networks scan that seems correct and says it connected successfully... but the signal level remains zilch.
In fact, it seems like in addition to the general connection problem, that the device unlock isn't *really* working for some reason. No error comes up when an off-network SIM is inserted, but I noticed that for one, the APNs do not generate the way I expect them to on a properly unlocked device - not even T-Mobile will autofill, just Metro. This *could* be normal on this device, but I don't think it is... and regarding the "Search Networks" scan, there's a reason I said "if you have a Metro or TMo SIM" earlier. The option is greyed out entirely when any other SIM is inserted. Hmm.
So what the hell is this, any ideas?

Unlock Redmi 7 bootloader without SIM card

Hi
So before anyone tells me to just insert a SIM and be done with it, please read this first. I'm trying to unlock the bootloader so I can try flashing different ROMs and radios. I had a perfectly working global version of the Redmi 7. After a phone call, the network went off and wouldn't return.
What I've tried so far:
•Trying multiple Sims known to work
•Manual network selection (fails because it can't find any)
•Changing preferred network modes and bands with the *#*#4636#*#* menu. Nothing happens.
•Toggling airplane mode, several times.
•Factory reset, both from within the OS and from the recovery (Vol Up + Power button)
•Attempting to flash a Fastboot version of the latest global MIUI 11 ROM. This actually fails, saying that critical partitions can't be flashed or something.
•All sorts of bootloader unlock tricks, such as the older versions of MiFlash Unlock, using multiple accounts, etc.
I'm honestly stuck here. Any help in fixing my problem would be appreciated. It could be either getting the network to work, or unlocking the bootloader. I can't bind the MiAccount to the phone under developer options ->MiUnlock status or such, because it detects that there is a SIM in the phone alright, but it just can't connect to any network.
The same here %
Was the SIM card's network working before? Maybe you're just in a dead spot?
Darth Bidder said:
Was the SIM card's network working before? Maybe you're just in a dead spot?
Click to expand...
Click to collapse
It was working fine for a few months. It just stopped being able to connect to a network all of a sudden. I swapped SIMs, moved to places with strong network connections (I verified with a different phone) and still nothing.
Selorm611 said:
It was working fine for a few months. It just stopped being able to connect to a network all of a sudden. I swapped SIMs, moved to places with strong network connections (I verified with a different phone) and still nothing.
Click to expand...
Click to collapse
Then you probably should head to a service center to get it fixed.
what happened to this issue
Selorm611 said:
It was working fine for a few months. It just stopped being able to connect to a network all of a sudden. I swapped SIMs, moved to places with strong network connections (I verified with a different phone) and still nothing.
Click to expand...
Click to collapse
hey even i am facing the same issue from yesterday, swapped sim, factory reset from TWRP and system, still its same.
Did you found any fix to this issue or sent it to service center?
Sidboy1999 said:
hey even i am facing the same issue from yesterday, swapped sim, factory reset from TWRP and system, still its same.
Did you found any fix to this issue or sent it to service center?
Click to expand...
Click to collapse
I had to buy a different phone. We couldn't get anyone to fix it.
Selorm611 said:
I had to buy a different phone. We couldn't get anyone to fix it.
Click to expand...
Click to collapse
Same, i did ask in service they said that they have to replace the whole PCB which will cost somewhere around 6k, so i just bought a new phone by replacing it on amazon for 5k
Same issue im having here but with a new POCO F2 pro. Since inception i was not able to get signal on it
I need to root my redmi 6a but bootloader makes a big trouble for me .for unlocking bootloader there must be sim in that device.but I doesn't have a sim card and even if I insert it, my sim board is damaged. So is there a way to unlock bootloader without inserting sim.

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