Hello.
1. There is a mi 3 phone with a symptom that does not see SIM - but all Sim-connector are in place and removing back panel does not show that they are broken, as is typical in this device.
2. No sim tray. Therefore, it is not clear whether the slot is faulty or some contacts are simply not closed. I saw one "foot" at the bottom of the slot, but it did not respond to pressing. Anyone who has tried or knows, plz tell me how the phone detects whether there is a SIM card or not?
3. Already the most incomprehensible. On 911 the phone does not catch anything. I beg you, please look at your device. pull out the sim tray and just dial 911 will connect or not. no need to wait for an answer =)
4. What does a GSM antenna look like? She's not in the plastic insert on top of the phone or the cover?
in general, need to understand what to repair! is the radio module dead ... (by the way, how to test?)
However advanced phone technology may be, the ability to make or receive phone calls remains the most critical feature of any mobile device. To be without this basic telephone use is to get the message "SIM card not detected" on your phone. It goes without saying that this is a frustrating situation that needs a quick fix. So, if you're not sure what to do in this situation, we've compiled a list of seven expert-recommended cures for you to attempt.
what you talking about?.
General question is - how PHONE detect sim card? by software? hardware switch? Shorted PINS?
Related
Just got my Kaiser, lovely boxing, lovely phone but I've had a little unpleasant surprise - I've entered SIM card while phone was already on. In result Kaiser have just crashed - I mean switched off itself. Anyone else noticed similar trouble? Does it mean there is still need to switch the phone off before changing SIMs?
Anyway, going to explore Kaiser.
its not a crash, its just what it does from what I have read, so i guess its just not "hot swapable"
y2whisper said:
its not a crash, its just what it does from what I have read, so i guess its just not "hot swapable"
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Click to collapse
It seems like - switching off occurs in the exact moment of unlocking SIM card cover... Well, shame - SIM hotswapping would be really cool
SIM card hot swapping is really bad. I work at a Operator and you don't want to know what kind of network trouble this can bring.
I've also had the Kaiser for a couple weeks now, and yes, it is supposed to shut down when you open the SIM cover. It's just for your own protection, you can even break your SIM if you remove it while the device is on (and, has a electric current flowing to the SIM).
thats what many design work are done to prevent users from doing things dangerously. If you've noticed, that all phones SIM cards are hidden under the battery and/or blocked by the battery in one way or the other. That's to force user to shut down the phone before doing anything with it. I'm sure that's for the protection of the SIM and/or not making a mess on the telco system, which may heavily affect the phones popularity
Not true. Another HTC handset with easy access to SIM card slot locatyed under slide out keyboard:
HTC VOX
also:
HTC TOUCH - side access to SIM card
hanmin said:
thats what many design work are done to prevent users from doing things dangerously. If you've noticed, that all phones SIM cards are hidden under the battery and/or blocked by the battery in one way or the other. That's to force user to shut down the phone before doing anything with it. I'm sure that's for the protection of the SIM and/or not making a mess on the telco system, which may heavily affect the phones popularity
Click to expand...
Click to collapse
eva_d said:
Just got my Kaiser, lovely boxing, lovely phone but I've had a little unpleasant surprise - I've entered SIM card while phone was already on. In result Kaiser have just crashed - I mean switched off itself. Anyone else noticed similar trouble? Does it mean there is still need to switch the phone off before changing SIMs?
Anyway, going to explore Kaiser.
Click to expand...
Click to collapse
It's actually in the manual. Page 24 section 1.2
Always turn off your device before installing/replacing the USIM/SIM card and battery.
Cheers.
SecureGSM said:
Not true. Another HTC handset with easy access to SIM card slot locatyed under slide out keyboard:
HTC VOX
also:
HTC TOUCH - side access to SIM card
Click to expand...
Click to collapse
Interesting.. I'd guess I'm at the old age. I did a bit of research, it seems that THERE ARE phones out there that can have hot-swap SIM. This is news. From Nokia N93 review
The hot-swap SIM slot is a very good solution, especially for users having more than one SIM. It allows you to exchange SIM cards without the necessity to switch off the phone and remove the battery. It is enough to switch phone in offline mode while changing card. At least it should work and it works on N90 just fine but on N93 with the current firmware version it is impossible to remove the SIM card even in offline mode because it causes prompt freezing.
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Click to collapse
Redah said:
SIM card hot swapping is really bad. I work at a Operator and you don't want to know what kind of network trouble this can bring.
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Click to collapse
Such as? Hotswapping SIM card from network's point of view looks exactly the same as removing battery without actually switching off the phone, as many people do. In such case network get no notification (IMSI detach) at all about switch off, and the only 'trouble' is network still 'thinks' that user is reachable until the next PLU (Periodic Location Update) or call attempt..
Well explained article on this: http://en.wikipedia.org/wiki/IMSI_detach
Redah said:
I've also had the Kaiser for a couple weeks now, and yes, it is supposed to shut down when you open the SIM cover. It's just for your own protection, you can even break your SIM if you remove it while the device is on (and, has a electric current flowing to the SIM).
Click to expand...
Click to collapse
That's reasonable explanation. I have never got SIM card damaged, but I'd rather prefer not to experience it in future. In fact, my the very first SIM card I have *ever* had is already over 8 years old and still works perfect.
hi guys,
i got TYTN II brand new whenever simcard inserted, phone start up then switch off itself.
without simcard start up ok, go all the way to the main screen.
is this to do with the Radio rom?? i flash with the original rom still no luck.
have anyone here experience this
thanks
Sounds like the SIM card isn't inserted well or the contacts are dirty (or could be the SIM card). Try cleaning the contacts on the SIM and device first and make sure the door is securely shut.
I think you have this confused. When you switch it up it turns off the phone so you can turn it on and the phone recognized the sim, if it would stay on when you put the sim, it wouldn't recognize the sim, so put it in then keep it in and turn it on and it should have recognized the sim. If you know that already, then do what Jwy said, I recommend rubbing alcohol and 100% cotton.
my device is working ok, but everytime i just unlock the sim card slot (without touching the card itself, my device shuts down, no matter which rom or radio rom.
It's no problem for me because i've just got one single sim card, but if i would have two different sim's....
Is this the standard behaviour ? I think it's strange, just curious about that...
that is normal , there is a little switch behind it that turns your device off .
some kind of protection.
Right, most phones have the sim under the battery so you must pull the battery to insert the sim. The Kaiser cuts the power with a switch on the sim door to protect the sim from a "hot" insertion and possible damage when changing sims.
JwY said:
Sounds like the SIM card isn't inserted well or the contacts are dirty (or could be the SIM card). Try cleaning the contacts on the SIM and device first and make sure the door is securely shut.
Click to expand...
Click to collapse
well simcard is 100% working, nothing to do with the simcard dirty or damage.
Another TYTN II i have is working fine with this simcard.
~~Tito~~ said:
I think you have this confused. When you switch it up it turns off the phone so you can turn it on and the phone recognized the sim, if it would stay on when you put the sim, it wouldn't recognize the sim, so put it in then keep it in and turn it on and it should have recognized the sim. If you know that already, then do what Jwy said, I recommend rubbing alcohol and 100% cotton.
Click to expand...
Click to collapse
No man, no confusion here, i know how its works
you didn't read my msg propely,
" switch off when simcard in the phone" if i take to simcard out, the phone boot up fine, ok
i switch it off then put simcard in (clip the simcard's door) then turn the phone on, just say HTC logo then switch itself off
ADD:
i mention that i got 2 TYTNII ok.
i swap the motherboard between eachother, still the same.
so i think either RADIO ROM or HARDWARE !!
so i want opinion here, whether its the HARDWARE OR SOFTWARE???
thanks
Ah, ok. You don't have to get mad . It could be software. I have seen this happen to people. Try a different rom & radio.
~~Tito~~ said:
Ah, ok. You don't have to get mad . It could be software. I have seen this happen to people. Try a different rom & radio.
Click to expand...
Click to collapse
thanks,
do you have a good rom and radio that i can download??
i already flash original ROM in, still the same
thanks
anyone?? please
thanks
My cell phone's functions work properly except for the phone itself. When I turn on my cell phone it keeps saying "searching" for a while and then "no service" appears. What might cause this? Thanks in advance
Your cell is not able to receive signals?? A little more info needed, are you using stock Radio and ROM?? If not, is your radio compatable with your current ROM??
It could be a function of not using SEARCH first...
Or, it might be corrosion on your SIM card. Pull it out and rub it lightly on your jeans, or use a pencil eraser to clean it off, then stick it back in and see if it gets signal.
Try searching for a network manually, see if you see any (even not the one you have your contract with).
Test your SIM in another phone.
Test another SIM in your phone.
Turn off 3G.
As said above, if you have flashed the phone make sure the radio is comptatible with the ROM.
If all that fails, send your device for repair.
Tilt was previously working. Now shows "No SIM" on screen when any SIM is inserted.
Any idea what the issue might be?
I am not the current owner of the tilt, nor do I have access to it to test anything, so that is basically everything I know about it.
What is your best guess?
Thanks
is it your phone or is it a phone you got of e-bay.
If of e-bay it may be that yur IMEI is barred.
saopacic said:
is it your phone or is it a phone you got of e-bay.
If of e-bay it may be that yur IMEI is barred.
Click to expand...
Click to collapse
Ebay.
Well if that is that case great, because my carrier does not ban IMEIs, so it will work perfectly for me.
Is that really the message you would get if your IMEI was dissabled though? That doesn't really make sense, as it would see the SIM and you would see it say: Searching for network... Registering... and then it might say no SIM, but it says no SIM right away, so that can't really be it.
Any other ideas?
this is usualy a bad sim card..
usualy either a worn card.. or possibly an issue on the att side with your sim number
if you frequent any core att stores you might could get a free one..
I stopped bidding for it on eBay, cuz I don't feel like taking the risk.
It sold for $127.50
Sounds silly, i know, but i had the same a while ago, found the sim goes in and locks shut back to front the contact part going in last, just maybe this simple
I had a similar problem with my new Tytn II. Only 3 days old and after I took out and reinserted SIM, I got the "No SIM" message, same problem with another SIM card as well.
Just as I was ready to return the device, after a final test with my SIM card, it decided to work. I have not taken out the SIM since and this problem hasn't shown up.
There have been a couple of threads on this problem.
It would seem that the design of the SIM connector is not all that it should be.
My main SIM sometimes wouldn't connect and another couple of SIMs would not connect at all.
A piece of paper, folded if necessary, inserted between the SIM card and the metal clip to increase the contact pressure has completely fixed the problem on mine, but apparently it has not worked for everyone.
Hi all. I hope someone can help me with my phone.
I have this phone and I have problems with it. The phone was bought from another person, not in a store.
It does not connect to the mobile network and cannot connect to the mobile internet.
It is fully operational, all functions work (except for the sim card), the phone connects to wifi and connects to the Internet. When connected to a computer, it is also completely determined.
You ask, "So what's the problem, take it to repair, they will replace the SIM card module and everything will be fine"
The problem is this. The SIM card is fully defined in the phone. When installing a sim card, a reboot is triggered, the operator is determined in the settings menu (I am from Russia, therefore my operator TELE2, the sim card was bought specifically in order to exclude the old generation of sim cards and also a possible simlock to my other operator), but when you click on the sim card menu, calls and SMS the buttons are grayed out with the caption "temporarily unavailable" (if necessary for understanding, I will change the language of the phone and provide all screenshots of the system) and they cannot be clicked.
Also, in the engineering menu, in the simlock button, opposite the Network subset inscription, there is the number 5 and it is marked with the letter X. This means, as far as I know, that there is a lock on a specific operator. But after a hard reset, the phone does not ask for any codes to enter.
This is my question, how can this be fixed?
Will flashing the phone to global rom help?
I gave the phone to a service center (not a Sony branded center, we don’t have one in our city), they told me that software setup was needed, but there was only a chance to restore the phone.
Maybe I need root access and find some file in my phone?
Please help me.
P.S. I don't have the best English, so sometimes I can't understand you, please don't get mad at me)
P.S.S. I created this topic in the questions section. I'm sorry if I had to go to the firmware section
Android 12 ,58.2.C.5.2