Hi!
I have a Sasmgun Galaxy S4 (gt9500 I think...). A couple of months ago I got my unlock pin code from my carrier and unlocked it.
Yesterday the phone went down after the battery ran out. When I turned it back on , It complained saying that the Sim card was inserted but was not valid.
I tried that chip in another phone, all good.
I tried a working gsm chip on my phone, no good.
So, any chip I put in my phone shows the same message...
Also I call my carrier and asked if my cell or line was marked as lost or stolen, but nop. Everything was fine at their end.
Is my cell phone broken? What could I try?
Thanks!!!
samsung always have that issue... even galaxy s5,s6,s6 edge faces that problem... you dont need to active it again.. its a simple glitch.. try to do simple tricks by googling,youtubing...
hit thanks button if helped
I tried inserting it again.
I tried setting factory defaults.
I tried gsm chips from my own carrier and other carriers...
Nothing.
Related
Sorry for the spam.
After I was finally able to get this phone working, it worked great for a few hours before losing all signal and telling me that it couldn't find a SIM card. Naturally, I was confused. (It dropped all service after 20 minutes earlier in the day, too. Airplane mode fixed that.)
(Phone is unlocked and rooted with Ace Tool Kit; I use T-Mobile.)
Now, when I put a clean AT&T SIM in there and reboot, it reads fine and has no problems fetching APN information. The T-Mobile SIM, on the other hand, does not fare as well anymore. I also tried another active T-Mobile SIM to no avail (works on BB; does not work on this phone).
I'm thinking that something is going on with the radio and it's tripping up the OS. Has anyone seen this before? Should I flash a new radio?
Thanks!
Try a layer or 2 of tape on the back of the sim card so it makes better contact.
It actually turns out that powering the phone off for about 15 minutes or so fixes this problem. I'm guessing there's a bug in the baseband that causes this.
Hello,
Recently, I had bought a used phone from someone, very nice Xperia RAY [st18i], but I didn't know that it's sim locked to T-mobile. I went to T-mobile centre and they said to me, that they can't do anything because phone is still under varranty, and If it is they can't unlock. So I made some research, found a solutions like buying a unlock code via weird sites, but the phone Is THAT hard sim locked that I even can not simply insert a unlock code., also bootloader is locked and can not be unlocked. [bootloader unlock: no].
My friend recommended me a solution of buying a "Turbo Sim", so I had bought one of them. It was simple, but there was a need to cut my SIM card a little to fit with a Turbo Sim in a sim container. But it doesn't matter, my xperia turned on and was not anymore asking to sim unlock code, I had just filled my PIN code and ... it wasn't working.. In a few seconds in a progress bar I had saw, that I had no signal,.. then it showed red "x" next to an empty signal bars and then the X dissapeared and again, no signal. Like a loop or something. I was confused, what to do.. I had tryed many times without any luck or success.. another day I had tryed again AND luckily, It was working!! This time it showed me no signal bars, then the red "X" next to a signal bar marks and then it turns to a full signal with a letter "R" next to signal bars [maybe roaming?].. but it was working!
I was glad.. but only for two days when I forgotten to charge my Ray and It went off, so I switched it again and AGAIN no luck! Signal bars dissapeared, - I am sure that the Turbo Sim still works, its not damaged or broken. A two weeks after this, I had tryed again to put my sim into my Ray, and it worked.. I don't know why and how, but it was working!... So I tryed to prevent discharging, It worked for a week or two, but my android messed a little bit and showed me weird things so I needed to reboot.. My signal bars dissapeared again and I am not able to connect to network again.
I am confused, what to do? Does anyone experienced something similar or same?
I had also downloaded an app LTE settings - as those turbo sims are only for GSM networks and there in my country we have WCDMA preferred networks, so I changed this the second time and it worked for a while.. Also tryed to switch on and off DNS server control. I had tryed many different roms just to be sure that It's not software related, I was not able to change kernel because of locked bootloader, I had tryed everything I found on internet without success.
Please, can somebody tell me what else to do? What can I try? Why It is working sometimes, and then for a weeks it's not and than It again works.. It is working always for unlimited time SINCE reboot, than I am not able to catch signal again.. How this can happen?
Every advice would be greatly appreciated!
wnii said:
Hello,
Recently, I had bought a used phone from someone, very nice Xperia RAY [st18i], but I didn't know that it's sim locked to T-mobile. I went to T-mobile centre and they said to me, that they can't do anything because phone is still under varranty, and If it is they can't unlock. So I made some research, found a solutions like buying a unlock code via weird sites, but the phone Is THAT hard sim locked that I even can not simply insert a unlock code., also bootloader is locked and can not be unlocked. [bootloader unlock: no].
My friend recommended me a solution of buying a "Turbo Sim", so I had bought one of them. It was simple, but there was a need to cut my SIM card a little to fit with a Turbo Sim in a sim container. But it doesn't matter, my xperia turned on and was not anymore asking to sim unlock code, I had just filled my PIN code and ... it wasn't working.. In a few seconds in a progress bar I had saw, that I had no signal,.. then it showed red "x" next to an empty signal bars and then the X dissapeared and again, no signal. Like a loop or something. I was confused, what to do.. I had tryed many times without any luck or success.. another day I had tryed again AND luckily, It was working!! This time it showed me no signal bars, then the red "X" next to a signal bar marks and then it turns to a full signal with a letter "R" next to signal bars [maybe roaming?].. but it was working!
I was glad.. but only for two days when I forgotten to charge my Ray and It went off, so I switched it again and AGAIN no luck! Signal bars dissapeared, - I am sure that the Turbo Sim still works, its not damaged or broken. A two weeks after this, I had tryed again to put my sim into my Ray, and it worked.. I don't know why and how, but it was working!... So I tryed to prevent discharging, It worked for a week or two, but my android messed a little bit and showed me weird things so I needed to reboot.. My signal bars dissapeared again and I am not able to connect to network again.
I am confused, what to do? Does anyone experienced something similar or same?
I had also downloaded an app LTE settings - as those turbo sims are only for GSM networks and there in my country we have WCDMA preferred networks, so I changed this the second time and it worked for a while.. Also tryed to switch on and off DNS server control. I had tryed many different roms just to be sure that It's not software related, I was not able to change kernel because of locked bootloader, I had tryed everything I found on internet without success.
Please, can somebody tell me what else to do? What can I try? Why It is working sometimes, and then for a weeks it's not and than It again works.. It is working always for unlimited time SINCE reboot, than I am not able to catch signal again.. How this can happen?
Every advice would be greatly appreciated!
Click to expand...
Click to collapse
Well, no-body replied, as it was expected -_- Since yesterday I solved the Isuue - For the others which will be searching for this kind of problem - An user "cadnyc" at youtube said that "T-mobile - some of the users on the forum recommended i plug that tmobile sim card back to a tmobile phone. let me reconnect to the cell towers. make a call and hang up. your tmobile is on its network now. eject the sim and plug it back to the iphone. im testing that right now."
THATS works perfectly! Regards
Good day, today I dropped my phone don't know if it lost signal after this didn't notice until I tried to make a phone call but now there no signal, can't make or receive calls, I notice that at the bottom of the screen it shows my service provider name and next to it says no service so don't know it its hardware related or sim, do you think that if I reset the phone it might work again? Thanks. Right now can't test because I'm at work, but in general information on service it says disconnected
Sent from my Nexus 5 using xda premium
Flash stock with fastboot, if it's the same, it's hardware I'm afraid.
Thanks a lot did already, tried everything seems hardware related, noticed that it also lost nfc connection wondering rich part should I replace to fix it, if only has to do with antenna or the whole mainboard
The NFC radio and antenna are connected to the back cover. Try popping your back cover off and on again.
Dihantar dari Nexus 5 saya dengan XDA-Free mobile app
Thanks already did and nothing, could it be related to some other piece?
go to your dialer app and type in #*06*# and see if a number pops up (your imei number) (dont post the number here)
Did too, also the *#*#4636#*#* and checked if signal was turned on, tried sim in other phones works without problems, I noticed that nfc is not working too, guess it has to do with a piece of hardware as far as I know both antennas are in the back of the phone. Took it to service and they told me it has no problem physically, this is driving me crazy
Also checked that it has no reports of being stolen, imei seems correct and legit checked it also on a site to see if it's valid and its working, it starts with a 32.
My phone wouldn't connect to any network after being in airplane mode on vacation for a week, acted like no signal - empty triangle instead of bars. I called my cell provider (T-Mobile) and after a new SIM and a factory reset they did something on their end because my phone was trying to connect to a tower that didn't exist. I'm a little fuzzy on what they actually did, but it worked. I actually had to do it twice over a couple weeks before it stopped giving me trouble.
ShiroZ31 said:
My phone wouldn't connect to any network after being in airplane mode on vacation for a week, acted like no signal - empty triangle instead of bars. I called my cell provider (T-Mobile) and after a new SIM and a factory reset they did something on their end because my phone was trying to connect to a tower that didn't exist. I'm a little fuzzy on what they actually did, but it worked. I actually had to do it twice over a couple weeks before it stopped giving me trouble.
Click to expand...
Click to collapse
thanks friend will have to go and check with them , dont know if its the same because my phone has no cell provider it accepts any sim you insert to it
Hello
Hello guys, I am on the same boat as Valholy described.
My phone fell on the ground from my hands. When I took the phone from the ground... it was still working(it wasn't shutdown nor restart), I only noticed that there was no more signal. Tried to restart/shutdown, factory reset, different sim card but no luck at all... As Valholy described it shows provider's name on the bottom of the screen, but there is no signal yet.. It seems like hardware issue. Any recommendation to fix this issue?
Did you fix your phone yet, Valholy?
Thank you
bump...
any help please.
thank you
I bought a new OPO,
When i opened the box it looked so cool! i booted the device and then saw the beautiful screen. But then the horror started.
I opened the sim slot. put in my Nanosim and closed it. It asked for my pincode... When i enter my pincode it just went to the mainscreen and gave NO signal. Then 5 seconds later it asked me to enter the pincode again....
Over and over and over. So i thought..... My nanosim is bricked! i went to my provider and gotten myself a NEW MICROSIM. I plugged it into the phone and 1 2 3 guess what..... Same problem. i kept trying and trying watched 50 videos on how to plug in your simcard correctly...Still the same problem. I tried my dads sim, my moms sim (different carrier)....SAME PROBLEM.
Then i unlocked the bootloader, rooted it and flashed Oxygen on it. Guess what.... Same problem. Flashed back to CM11. Same problem.
I think its either an antenna problem, or a simreader problem. Anyone have any idea what i could do and what this issue might be? Also i received the phone in this state. The day itself i already contacted customer support with my complaint. So i assume this is warranty right?..
Heres a small video i made for the support about my problem.
https://www.youtube.com/watch?v=PgESNaPO7Xc
Thanks lads
I assume you put the sim correctly as you stated, that is the metal contacts facing downwards. Also, have you tried resetting the phone from the setting menu? Another option would be to dial *#*#4636#*#* and choise the correct network option from the phone menu.
Well, what should i set the network to typing in that *#*#4636#*#*?
Hi all,
yesterday out of nowhere my moto g LTE lost all signal and instead is displaying "NO SERVICE". Iv'e tried reboot, soft reset, factory reset, removing and re-inserting the sim card, putting in another sim - nothing. the issue is not with the sim itself as I now have it in another device I have and everything is working great. anything I can do about this? tried searching for a solution but didn't find anything I didn't try already... the phone is quite new( ~7 months old) but I bought it while abroad and I'm not sure about warranty and such...
any help would be GREATLY appreciated
It normally does that when the phones been blocked by your provider.
You should ring them and double check it with them.
If not may be a dodgy antenna
I checked with my cell provider, and then re-checked my SIM with another device. everything was working perfectly. so the issue is indeed with the device =/ is there anything I can do about it? =/
I have the exact same problem, also tried factory reset and put on the stock rom, is it possible to change for a new antenna to find out if this is the real problem?