Develop Bugs

[Q] Using HTC one without Sim card or Flashing

Has anyone been able to get bars/signal without a sim card ? I was trying to use my phone without a sim card and I was actually thinking about flashing the phone but it will not work without a sim card, Event thought its a CDMA phone ??
Anyone know a by pass or how to get this phone to work like a regular cdma phone ?

sim card recognazed but no signal

hi friend i by today 2 sim card of another operator and no of them work on my i9195 the sim card ar worked fine and detected normally ...i have the old sim card with anothdr operator and she work normally but this 2 new sims cards not working why can i do? NOTE :my phone are desimloked i try many sim card and working normally whith the same operator of my new card...iam at stock rom kitkat...when i put the new card its show emergency call only....the sims card detected normally at my phone and iam able to show (simtoolkit)

any help please

any help friend please

@fburgos @pawitp

@fburgos @pawitp @F4k
 @R_a_z_v_a_n

Try other firmware, do a factory reset after you backed up your dates and so on. Try it

R_a_z_v_a_n said:
Try other firmware, do a factory reset after you backed up your dates and so on. Try it
Click to expand...
Click to collapse
ill try it and i tell you the results tnx you very much

@R_a_z_v_a_n i try 2 different stock rom and 2 custum rom my sim card recognazed but no signal...but if i put my old sim card its work fine the news 2 sim card dont work i try this sim at another phone and its work normally

znayver said:
@R_a_z_v_a_n i try 2 different stock rom and 2 custum rom my sim card recognazed but no signal...but if i put my old sim card its work fine the news 2 sim card dont work i try this sim at another phone and its work normally
Click to expand...
Click to collapse
Go to your provider and change your SIM. Its all I can advice you in this case.
Good luck

R_a_z_v_a_n said:
Go to your provider and change your SIM. Its all I can advice you in this case.
Good luck
Click to expand...
Click to collapse
tnx for your advice and your answers you are the best

[Q] How to verify a working sim slot on LS980 phone?

I get a used LS980 and It havn't activated with Sprint yet. No Unlocked yet. No Sprint sim card handy. Normally, it show NO Sim card on the phone, but when T-mobile or ATT sim card inseted, it still shows "NO SIM Card" I remove the sim card completely, and reboot the phone and insert Sim again. It still show No sim Card?
Don't they support to show invalid Sim Card if insert ATT or Tmobile sim card in a locked Sprint LS980 phone? I have a Sprint Samsung Galaxy locked with Sprint, If sim card inserted, it show invalid. Same with Verizon locked phone show invalid sim if ATT or Tmobile inserted.
Now, it seem likes a defective sim slot on the phone. without activated or a Sprint sim, how to verify it. Please be advice?

inserting any sim besides sprint will show no sim card message

DJ_MiX said:
inserting any sim besides sprint will show no sim card message
Click to expand...
Click to collapse
yup.. insert any sim beside sprint show No Sim Card message. is it normal for anyone?? or the sim slot defective?
I'm planing to use it on Freedompop. Order a sim from Tint.com could take awhile. While i'm wait for sim arrival, please tell is the sim slot defective or normal?

No one can help? Or test on your LS980 to find if it support to show invalid sim card on your locked LS980?
BTW, This device here still JB 4.2.2 with some of VZ8 firmware. Do I need to unlock for further test?

Tekone said:
No one can help? Or test on your LS980 to find if it support to show invalid sim card on your locked LS980?
BTW, This device here still JB 4.2.2 with some of VZ8 firmware. Do I need to unlock for further test?
Click to expand...
Click to collapse
Yeah, try unlocking using this thread:
http://forum.xda-developers.com/showthread.php?t=2729370
Then test out the sim cards..

No Sim card detect if it's not Sprint sim card install. NO matter what method I unlock it. Kind of weire..

Tekone said:
No Sim card detect if it's not Sprint sim card install. NO matter what method I unlock it. Kind of weire..
Click to expand...
Click to collapse
Try posting questions specific to your problem to the threads of the specific methods you used, someone in there will probably be best able to help you.

[SOLVED][Q] IMEI and Baseband unknown. I don't have a backup.

[SOLVED] I put my phone in airplane mode and my IMEI/Baseband came back, cheking the service menu I went to *#2263# and saw that "LTE Preference" was enabled. I clicked on Automatic and problem fixed. Probably a ROM bug? Who knows.
Hello there. I've been a reader of the XDA forums for some time but I never had any reason to create an account to post on the forums.
A few weeks ago I got a SGH-M919 as a gift, the phone only had a few months of use and I took it with me, everything worked fine except for the fact that I couldn't get 3G/4G (Not even EDGE), I was only able to connect to the GPRS network and I couldn't change the carrier (It always gave errors like "Unable to connect. Try later" and such). Although the phone is (apparently) quadband (I don't live in the US), it just didn't work but I lived with it.
Yesterday my phone was low on battery and I turned it off, a few hours later I turned it back on and it couldn't connect to the network, I went to the network options and once I pressed the screen to enter the Mobile Network options, I got an alert saying that I must have a SIM to access those option. At first I thought that the SIM got damaged somehow (This isn't the case since it works perfectly fine in another phone) but after a few minutes looking around, I checked the IMEI and instead of the usual number, I got a null/null message. My first reaction was to google what exactly happened and the answer I received was that the Baseband (Which is also Unknown) and IMEI are stored in a folder called EFS and that it got corrupted. Sweet. I looked for solutions but the main two I got (EFS Pro and ADB nvrestore) require a backup of the EFS (Which I don't have).
The other solution I got was to restore to the stock ROM (M919UVUFNH7) which I'm currently downloading from SamMobile (Sorry if this is considered spam). The phone is not rooted and has the stock ROM, it came with a CWM folder inside the internal memory with an .img file but it doesn't have CWM intalled. I've never upgraded it (Not sure if it came with that firmware from the store if it matters).
I live pretty much in what can be considered a "3rd world country". So I cannot send it to Samsung nor I have access to dollars.
Another question is, the phone was gifted to me already unlocked, I don't know if it came unlocked from the original carrier or if it was unlocked via a code or whatever. If I restore to the stock will it lock my phone to T-Mobile again? Would I be able to use it without a SIM card if it gets locked? It's impossible for me to get a T-Mobile SIM on my hands should I ever need one. In the worst case scenario that my phone gets locked, can I get it unlocked by flashing a custom ROM?
I have so many newbie questions that are already answered in other threads, but since it's a lot of information I want to get it as specific as possible to avoid breaking my phone.
If someone can help me with this issue, I'd really appreciate it.

i having same issue in M919

Do you guys get a message in notification bar about sim car removed or something about a sim card? Also, it doesn't matter if the sim card works in another phone. This device has a little issue with being picky with sim cards. If it's a cut sim card, get an original micro sim card

serio22 said:
Do you guys get a message in notification bar about sim car removed or something about a sim card? Also, it doesn't matter if the sim card works in another phone. This device has a little issue with being picky with sim cards. If it's a cut sim card, get an original micro sim card
Click to expand...
Click to collapse
Hi, thanks for answering. I don't get a message about a removed SIM card. I'm also using an original micro SIM.
I already downloaded the Stock ROM but I haven't flashed it yet.

serio22 said:
Do you guys get a message in notification bar about sim car removed or something about a sim card? Also, it doesn't matter if the sim card works in another phone. This device has a little issue with being picky with sim cards. If it's a cut sim card, get an original micro sim card
Click to expand...
Click to collapse
This is a known bug of the s4. It is a hardware problem and I have yet to find a solution. If you google it you will find many threads on different forums addressing this issue. Again, no known solution

Any answer/idea about my issue? . Sometimes I can access Mobile Network Options, sometimes I can't. I can't configure the APNs (They delete themselves after I click on save). Phone Serial Number didn't get deleted (Which is stored inside the EFS folder as far as I know). I also can't select a Network Mode. I click on GSM/WCDMA/LTE but it changes automatically to nothing.

k8108 said:
This is a known bug of the s4. It is a hardware problem and I have yet to find a solution. If you google it you will find many threads on different forums addressing this issue. Again, no known solution
Click to expand...
Click to collapse
That's what I said? One solution is to change sim cards if using a cut sim card to use an original micro sim. It's worked for a friend if someone I know and also for others on XDA. It's not the solution, but works for some
exeichdi said:
Hi, thanks for answering. I don't get a message about a removed SIM card. I'm also using an original micro SIM.
I already downloaded the Stock ROM but I haven't flashed it yet.
Click to expand...
Click to collapse
I would get a new sim anyway if I could. Flashing stock firmware wouldn't hurt as well

serio22 said:
I would get a new sim anyway if I could. Flashing stock firmware wouldn't hurt as well
Click to expand...
Click to collapse
Before trying to flash it, is there any risk of getting simlocked again? I wouldn't want to get my IMEI fixed just to realize that my phone is locked to TMB again
UPDATE 1: My IMEI and Baseband randomly got back (My IMEISV was still missing) but after I restarted, they got deleted again.
UPDATE 2: Rooted, went to EFS, didn't find nv_data.

No SIM card

Hello I have an unlocked SGH-T989D phone but the problem is it will only detect sim cards from Koodo even though it is unlocked, I've tried flashing many different roms and different radios but nothing is working. Currently on stock 4.0.4 /T 989UVLE1, yes the phone is unlocked I checked multiple times. Anyone know how to fix this?

ZYXWABCD said:
Hello I have an unlocked SGH-T989D phone but the problem is it will only detect sim cards from Koodo even though it is unlocked, I've tried flashing many different roms and different radios but nothing is working. Currently on stock 4.0.4 /T 989UVLE1, yes the phone is unlocked I checked multiple times. Anyone know how to fix this?
Click to expand...
Click to collapse
How do you check if a phone is unlocked if any SIM you try from another company is not read by the phone?
I think you need to try the unlocking procedure again, I don't think it was properly unlocked

ShaDisNX255 said:
How do you check if a phone is unlocked if any SIM you try from another company is not read by the phone?
I think you need to try the unlocking procedure again, I don't think it was properly unlocked
Click to expand...
Click to collapse
Hi when I go to the dialer and type *#7465625# it says [NETWORK LOCK] OFF

ZYXWABCD said:
Hi when I go to the dialer and type *#7465625# it says [NETWORK LOCK] OFF
Click to expand...
Click to collapse
What method did you use to unlock it?
I did it with this (http://forum.xda-developers.com/showthread.php?t=2024514) and not a single time was I asked to check with the code that you have showed me
This IS for the T989 though, not sure if you can use it for the T989D or if it's different in a way.
Sorry that I can't help, I hope you get the answers you are looking for

ShaDisNX255 said:
What method did you use to unlock it?
I did it with this (http://forum.xda-developers.com/showthread.php?t=2024514) and not a single time was I asked to check with the code that you have showed me
This IS for the T989 though, not sure if you can use it for the T989D or if it's different in a way.
Sorry that I can't help, I hope you get the answers you are looking for
Click to expand...
Click to collapse
My brother used that method a long time ago and he was able to use different carriers, but now nothing works but Koodo, and I never get asked for an unlock code, just says 'No SIM card'

ZYXWABCD said:
My brother used that method a long time ago and he was able to use different carriers, but now nothing works but Koodo, and I never get asked for an unlock code, just says 'No SIM card'
Click to expand...
Click to collapse
Yeah, this phone will not ask you for an unlock code, if you follow the procedure correctly it will read any other SIM card on it's own
Try unlocking again with what you have, the stock 4.0.4 and UVLE1 combination, it should be the right one. Do the procedure again until it reads the SIM card you want.
Another possible problem could be that your SIM is damaged or not well placed. It happens to me when I try to fit a Micro SIM on it, if it is not well placed it will not detect it. Try using other SIMs or try it on other phones to see if your SIM is the problem

ShaDisNX255 said:
Yeah, this phone will not ask you for an unlock code, if you follow the procedure correctly it will read any other SIM card on it's own
Try unlocking again with what you have, the stock 4.0.4 and UVLE1 combination, it should be the right one. Do the procedure again until it reads the SIM card you want.
Another possible problem could be that your SIM is damaged or not well placed. It happens to me when I try to fit a Micro SIM on it, if it is not well placed it will not detect it. Try using other SIMs or try it on other phones to see if your SIM is the problem
Click to expand...
Click to collapse
I tried unlocking it again, doesn't work, tried different sims, and still doesn't work, but those other sims work on different devices. Only the Koodo one works on mine, which was what it was locked to before unlocking.

ZYXWABCD said:
I tried unlocking it again, doesn't work, tried different sims, and still doesn't work, but those other sims work on different devices. Only the Koodo one works on mine, which was what it was locked to before unlocking.
Click to expand...
Click to collapse
Well in that case I'm all out of ideas.
One final question, when you insert a SIM on your T989D that is NOT Koodo, do you get an "Invalid SIM", "No SIM" or just an empty signal bar?

ShaDisNX255 said:
Well in that case I'm all out of ideas.
One final question, when you insert a SIM on your T989D that is NOT Koodo, do you get an "Invalid SIM", "No SIM" or just an empty signal bar?
Click to expand...
Click to collapse
It says "No SIM card.|Emergency calls only"

ZYXWABCD said:
It says "No SIM card.|Emergency calls only"
Click to expand...
Click to collapse
My conclusion is that it's having a hard time reading the SIM card. When you put another companies SIM card in to a LOCKED phone, it will show as invalid SIM (sometimes it even shows signal but is unusable). Since it says "No SIM card", I believe it's more of a hardware problem than a software one.
All I can think of is try moving the SIM card around, turn on. If nothing changes turn it off and move a little again, the turn on and repeat until it reads it.
Apart from that, I have no clue what could be wrong with the phone.
Turn on your phone without any SIM. If you get the same message (No SIM card.|Emergency calls only|) then it is most definitely your phone not reading your SIM correctly. If you get Koodo signal WITHOUT any SIM inserted (which I doubt but it CAN happen) then that means you have a faulty SIM Card Reader on your phone.

ShaDisNX255 said:
My conclusion is that it's having a hard time reading the SIM card. When you put another companies SIM card in to a LOCKED phone, it will show as invalid SIM (sometimes it even shows signal but is unusable). Since it says "No SIM card", I believe it's more of a hardware problem than a software one.
All I can think of is try moving the SIM card around, turn on. If nothing changes turn it off and move a little again, the turn on and repeat until it reads it.
Apart from that, I have no clue what could be wrong with the phone.
Turn on your phone without any SIM. If you get the same message (No SIM card.|Emergency calls only|) then it is most definitely your phone not reading your SIM correctly. If you get Koodo signal WITHOUT any SIM inserted (which I doubt but it CAN happen) then that means you have a faulty SIM Card Reader on your phone.
Click to expand...
Click to collapse
It works on Koodo but only if the sim is inserted, also I tried moving the sim around and it still isn't reading. I think this is a software issue.

ZYXWABCD said:
It works on Koodo but only if the sim is inserted, also I tried moving the sim around and it still isn't reading. I think this is a software issue.
Click to expand...
Click to collapse
bump

Sorry man, I'm all out of ideas. I mean I've experienced the problem with the "No Service" thing, but I basically fix it by switching to 2G since I know there are some areas that I can't get 3G coverage. As for your problem, it's basically not reading your SIM entirely (by either software or hardware issues) and I wouldn't know how to get around that.
Best of luck to you