Database Users

HELP! x10 keeps on rebooting/restarting with a sim card in!

Hello guys, I am having a problem with my unbranded x10i bought in UK (I am currently using it here in the philippines with a local sim card) . After I did an OTA two days ago, it just keeps on restarting/booting! I have tried the "repair" option twice in the PC Companion software but still no luck.
What's strange though is that when I tried switching the phone on WITHOUT a sim card in, it booted up with no problem (and I checked the build number, it says R2BA020 which probably means the OTA update was a success). I put the sim card back in and the problem came back, it kept on restarting.
What seems to be wrong? Any suggestions on fixing it? I would really appreciate your help guys. Thanks!
Update: I successfully rooted my phone hoping that rooting would solve my issue, but unfortunately it still keeps on rebooting/restarting whenever i put ANY sim card in.

Have you tried using another SIM-card?

yes. I have used different sim cards...

Try flashing back the original firmware.. and make sure the sim card is inside the x10 while doing it. Worth a try..

I have the same problem too and I have just updated my phone to R2BA024 and the firmware version is still 1.6. I have hard-reset so many times and reinstall some many times. The problem still there. I have contact Sony Ericsson customer service and bought my phone to fix. Got it back, problem hasnt been solved. I have waited for 3 weeks for a reply from them and end-up they said they do not have any new phone or spare-parts to fix my phone. Until then, I have contacted them almost 10 times and still no one has the right answer and just keep asking me to wait. They dun even have an exact date when the parts will arrive. I am very piss off now and I dunno what I should do next.

Its the same problem here with me too. Bought the phone from a friend about 3 days ago. was going all good when it just started to keep booting itself. While the sim is inside, it'll restart just as it finishes booting. Without the sim, its fine. I have tried other sim cards too, and format/reset my phone many times but it just isnt working for me anymore. HELPPPP!!!

cvg_guy said:
Hello guys, I am having a problem with my unbranded x10i bought in UK (I am currently using it here in the philippines with a local sim card) . After I did an OTA two days ago, it just keeps on restarting/booting! I have tried the "repair" option twice in the PC Companion software but still no luck.
What's strange though is that when I tried switching the phone on WITHOUT a sim card in, it booted up with no problem (and I checked the build number, it says R2BA020 which probably means the OTA update was a success). I put the sim card back in and the problem came back, it kept on restarting.
What seems to be wrong? Any suggestions on fixing it? I would really appreciate your help guys. Thanks!
Update: I successfully rooted my phone hoping that rooting would solve my issue, but unfortunately it still keeps on rebooting/restarting whenever i put ANY sim card in.
Click to expand...
Click to collapse
Is it 32K sim or 64K???

hi techguru, can u tel me wot the diff is between the 32k and 64k sim ? many thanks

ISSUE SOLVED here.
BTW : my sim is 64k.
anyways, i found out that the problem was because of the faulty battery. what i guess is that the voltage couldnt get to the requirements of the phone, and everytime the sim radio (whatever its called) switched on, the phone just turned off.
I reinstalled/repaired my phone many times, GOT the exclamation mark of death one time also, but the phone just didnt turn on.
Later i noticed that the phone would just turn on itself when i attach the phone to the charger, otherwise it wouldnt turn ON. So what i did was just change the battery, and walla, the phone is ALIVE again.
Sim is working, phone is working.
BUT i see some signal losses from time to time, otherwise the phone is good enuff.
FOR me , the change of battery did the trick, I hope it works for u guyz aswell.
Cheers ...

Shonan_ said:
hi techguru, can u tel me wot the diff is between the 32k and 64k sim ? many thanks
Click to expand...
Click to collapse
64k sims draws more power than normal ones.
Sent from my X10i using XDA App

Cheers fella this mite be worth me lookin in to
Sent from my X10i using XDA App

addictivesundew said:
ISSUE SOLVED here.
BTW : my sim is 64k.
anyways, i found out that the problem was because of the faulty battery. what i guess is that the voltage couldnt get to the requirements of the phone, and everytime the sim radio (whatever its called) switched on, the phone just turned off.
I reinstalled/repaired my phone many times, GOT the exclamation mark of death one time also, but the phone just didnt turn on.
Later i noticed that the phone would just turn on itself when i attach the phone to the charger, otherwise it wouldnt turn ON. So what i did was just change the battery, and walla, the phone is ALIVE again.
Sim is working, phone is working.
BUT i see some signal losses from time to time, otherwise the phone is good enuff.
FOR me , the change of battery did the trick, I hope it works for u guyz aswell.
Cheers ...
Click to expand...
Click to collapse
This also mite be worth a look too
Sent from my X10i using XDA App

hmmm. sounds interesting. I might try changing my battery. btw, i have tried using both 64 and 32K sim cards but the phone keeps restarting with any of the sim cards in. without both the sim cards, the phone works fine. how much does an x10 battery cost?

here, i get the cheap chinese battery. it isnt expensive, but its working great. almost better than my previous battery.
cost me around 2.5$.
but.. i am still getting lots of SIGNAL DROPS. i dont know why it is happeneing. I tried swapping the battery with the original battery of another X10, but no change. Signal loss is not a battery issue then.
Any idea what it could be ??

Signal loss?
Maybe a weak signal, or radio related?

or maybe its because i updates it to R026 is causing the signal loss issue ??

@techguru
I am also using airtel, but with a 64kb sim.
In my case it does not start.
It start if with no battery or with a 128kb sim of TIM.
I tried to recharge the firmware but nothing seemed to change.
I know that someone solved the problem swithcing off the phone in airplane mode, but this is not the case for me.
I also noticed that in some cases the led is green and is slowly blinking.
I am ready to change the battery if this helps, but I am not sure. Even if I put it under charge it does not switch on and the battery seems not to charge
As I bought the phone only since one day I wonder if they will change it.

SIM card issue... any advice?

I'm not sure if this is a common issue or just an issue with my sim card.
Looks like the sim card just stopped working this morning. I can't make/receive any calls or texts and the lock screen says "Please insert SIM card and restart".
I've restarted about 3 times now and have tried removing and reinserting the sim card, with no luck.
I figure I'll need to take it into a T-Mobile shop to get a new sim card, but my Vibrant has been rooted and has a the Obsidian Froyo rom installed.
Should I just plug the SIM into my old blackberry and take it in that way for replacement?
Or is this some known issue that can be easily fixed?

shm522 said:
I'm not sure if this is a common issue or just an issue with my sim card.
Looks like the sim card just stopped working this morning. I can't make/receive any calls or texts and the lock screen says "Please insert SIM card and restart".
I've restarted about 3 times now and have tried removing and reinserting the sim card, with no luck.
I figure I'll need to take it into a T-Mobile shop to get a new sim card, but my Vibrant has been rooted and has a the Obsidian Froyo rom installed.
Should I just plug the SIM into my old blackberry and take it in that way for replacement?
Or is this some known issue that can be easily fixed?
Click to expand...
Click to collapse
I have had this happen to me twice. Once, the SIM went bad (it happens).
I called TMO told them that it's not working & they said they'd get me a new SIM. I had the option of going to an authorized TMO store or getting it mailed to me. I went to a store, they installed & it off I went.
The other time, I took some rubbing alcohol and a QTip to it & cleaned it up, let it dry, put it back in & it's been working for a little over a week now
So, I'd try giving it a cleaning first and if that doesn't work, give TMO a call.
If they don't know that you have the Vibrant and think you still have a BB, then yeah, I'd put it back in that rather than bringing in the Vibrant if you have to go to the store. It's just easier when the person helping you isn't trying to force you to change your plan at the same time.
Question: The phone won't let you do anything without a SIM card? If that's true, that's just another reason to be glad I SIM unlocked my phone....that would get annoying!

Old Tmobile sim cards actually have a certain amount of times they can connect to the network tower. If you use airplane mode a lot it you may reach this point quickly.
And some sims cards just go bad. Which I think is the case with yours tjhart85. Take the phone and card to Tmobile. Tmobile will change the sim card for free.

Yup, turned out the sim card just went bad. Called up T-Mobile customer service, they put a not on my acount, and went into my local T-Mobile store and got a new sim card. Phones working great now. They didn't even ask for the old one and didn't have to look at my phone.
Thanks guys!

Nexus 4 - SIM problem

Hello,
I just got a Nexus 4 16GB (had a 8GB before) and I've to reenter my PIN code almost every time I'm unlocking the phone when it has been in deep sleep. (the card is locked and the phone is disconnected from the network)
I first thought it's caused by custom ROMs, but it's even happening on stock ROM/kernel...
Am I the only one with that kind of problem ?

If you get the sim pin wrong a couple of times, the card is locked and you need to call your provider for a personal unlock code.
If you keep trying to unlock it eventually the sim will simply become inoperable and you'll need a new one.

I can unlock it without a problem after entering my correct pin.
So it is not a problem with the SIM or my provider.

Go into Settings > security and then there should be an option along the lines of Sim card lock. Try checking in there.
Sent from my GT-I9100 using xda premium

Disabled the pin lock for now.. But the signal still drops when the phone is longer in deep sleep.

I had the same problem!
I don't know if this is rom or kernel related, but since I switched to ParanoidAndroid it's gone....

Ah finally someone with the same problem.
I've already been running PA, but the problem did still exist.
Did you change anything else beside that?

i removed my SIM again and cleaned it.

i've also had that issue the second day after receiving the phone. I removed the sim, put it back in but that didn't help - i looked at my sim card tray and i realized that a one side of the sim card chip was close to one metal side of the tray and i figured that could be the issue - so what i did is i took a stripe of adhesive tape and made sure they wouldn't touch - I haven't had the issue again and it's been more than 2 weeks.

Uh...I remember a kernel arg from my old HTC Topaz WiMo-Device, which was able to run XDAndroid.
The argument was pm.sleep_mode, and it is still available on the Nexus 4 and set in the system/build.prop
It controls, how the device handles locking, usually it is set to 1, but, i think, it goes from 5 to 0, where 5 is "stay on all the time" and 0 is "shut down everything when locked".
You could try to swich it to 2 or 3, maybe it helps.

I got a replacement phone which is working fine now.
Thanks for the tips anyway

hmm got a 16gb one and the Sim keeps disconnecting even without deep sleep.
might need to send it back too. poop

Hi,
I got the same problem too.
Sometime, it's getting worse and worse so I have no other choice but to reboot the phone --> When I put my PIN code and press the validation button, the screen doesn't go to the main menu but asks me again about my PIN code. Infinite loop...
I cleaned the SIM card 15min ago and no problem since (fingers crossed). I read an alternative version of android solved the issue in one case but not always. I won't take that risk if I have to send it back to the manufacturer. Before I do that, could you suggest me something else to try ?
Many thanks for your help.
Best,
Valentin

I had the Nexus 4 since December and yesterday for the first time the phone asked for the PIN code and lost the connection to the network. And like posytryon I had to enter the PIN more than once (in my case it was "only" twice). This morning it already happened twice again. Never rooted the phone, stock Android on it. What is going on?

Why are you people so paranoid? I've never used a lock on mine. In all these years....
Just asking for trouble using sim lock IMO.

What kind of silly reply is that? Why is it asking for trouble using SIM lock??? And if you read through this thread, someone had the same problem of the phone not connecting anymore even without SIM lock.

I pulled my sim yesterday because I switched users now it says no sim I put old sim in same problem flashed new rom nothing...
(CRAZY TIMES)

lucker#1 said:
i've also had that issue the second day after receiving the phone. I removed the sim, put it back in but that didn't help - i looked at my sim card tray and i realized that a one side of the sim card chip was close to one metal side of the tray and i figured that could be the issue - so what i did is i took a stripe of adhesive tape and made survey they wouldn't touch - I haven't had the issue again and it's been more than 2 weeks.
Click to expand...
Click to collapse
Thank you so much this fixed my problem!!! :beer:
Again thank you so much!!!
(Mathew 5:44)

lucker#1 said:
i've also had that issue the second day after receiving the phone. I removed the sim, put it back in but that didn't help - i looked at my sim card tray and i realized that a one side of the sim card chip was close to one metal side of the tray and i figured that could be the issue - so what i did is i took a stripe of adhesive tape and made sure they wouldn't touch - I haven't had the issue again and it's been more than 2 weeks.
Click to expand...
Click to collapse
I'd noticed the same thing, and insulating the SIM from the holder resolved the problem for me also.
I also found an app for monitoring and alerting if the phone switched back to asking for the SIM PIN, this might be useful for others.
SIM Locked Notifier - https://play.google.com/store/apps/details?id=org.slaytanic.SIMLockedRingNotifier

Finally put some adhesive between the tray and the SIM card. Worked perfectly for me too, no SIM problem for 10 days now.
Thank you so much, Lucker#1.

[Q] Sim Card Error

I have literally been searching this site for hours trying to find an answer but nobody goes into much depth about this problem. My i9500 cannot detect my sim card at all. I have replaced my Sim Card Tray twice since receiving the "sim card error please restart phone" notification because it didn't seem to fix the problem the first time i replaced the tray and I wanted to be sure it wasn't a bad tra. I have tested the Sim Card in 3 other phones and it definitely works so I don't understand what else it could be. Please help me guys. I need this phone for work and I can't afford to upgrade right now.

"no sim card" after reboot?

I just got an Axon 7, and everything seems to be working well. But I set up the "scheduled power on/off" option to shutdown at 3AM and reboot at 5AM, and so far (2 days), the phone has been showing "no sim card" every morning. The first day, a manual reboot detected the sim card. Today, it didn't. After powering down and reseating the sim card, it was detected, but I don't know whether the reboot did the trick or the reseating.
Anyway, does this sound like a hardware or software issue? Anybody else having it?

Happened again this morning. A manual reboot brought it back again. I'm going to disable the 'scheduled reboot' option and see if that 'fixes' it. But it doesn't seem to be a hardware thing, since most of the time, a manual reboot detects the sim. Could it just be done dodgy timing issue in the boot sequence. I'm running the latest B27 US build.

littlenoodles said:
I just got an Axon 7, and everything seems to be working well. But I set up the "scheduled power on/off" option to shutdown at 3AM and reboot at 5AM, and so far (2 days), the phone has been showing "no sim card" every morning. The first day, a manual reboot detected the sim card. Today, it didn't. After powering down and reseating the sim card, it was detected, but I don't know whether the reboot did the trick or the reseating.
Anyway, does this sound like a hardware or software issue? Anybody else having it?
Click to expand...
Click to collapse
Okay, it's failing hard now. 4 reboots in a row with "no sim card". So I tried the card in my old phone - not detected there either. Can a phone fry a SIM card - because it looks like that's happened.

littlenoodles said:
Okay, it's failing hard now. 4 reboots in a row with "no sim card". So I tried the card in my old phone - not detected there either. Can a phone fry a SIM card - because it looks like that's happened.
Click to expand...
Click to collapse
LG G3 here - half the time after a reboot, it gives me the same SIM card error. After which of course i need to reboot it several times before it will recognize the sim card again.
This looks like a hardware fault, probably a bent pin in the card reader, so i carefully cut off the cover of the reader slot with a dremel + small cutting disc, being very careful to leave the sides of the cover to hold the card in place while it's in - it doesn't seem to be the case, everything looks fine, and from the markings left on the sim card by the pins as you remove/insert it, looks like all the pins are contacting the points on the card itself.
Also very weird that it ONLY happens right after rebooting. The most probable scenario i can think of, is that the card is read on bootup, and not interacted with again during normal usage of the phone...? or maybe a glitch with timestamps? A few times, restoring the backup of EFS partitions "seemed" to fix the problem, but :/
so.... WTF??!?!??!?

Was it a used or new Axon 7?
If used, someone may have had an SD in with the SIM and damaged it.
I was running mine that way but was careful and it survived ok.
Have you tried the SIM in both positions as 1 or 2?
Also ensure it has a correct APN saved against that SIM.

UPDATE: (LG G3) Seems it's a software bug after all. I updated to a newer version of LineageOS, and out of 6 times i just rebooted to test, the "no sim card" problem occured once. So maybe it's not 100% solved, but at least i don't have to futz around for 30-40 minutes to get my phone working again after a reboot.