[Q] What could cause such a problem? - General Questions and Answers

Hi ladies and gents,
I recently decided to buy a china phone that has the necessary spec to work in canada( in terms of frqcy). So my question is the following my phone works like a charm Wifi bluetooth ive gaming apps wifi file transfer everything works like a champ except my mobile network. Now consider this for two -3 days my mobile network was working on the HSDPA H+ network and man I was getting great speed. Now the problems is I decided to have fun and delv a little bit into rooting and using custom Roms but found myself with a bricked phone no problem reload factory fresh Rom and MTK droid tools new IMEI and voila phone working like a charm except insert SIM Card 8 second approximately after Ive received notice that I have a voicemail my phone shuts down and this happen every time it's killing how could this happen how is it possible is my carrier sending some type of lock on my sim is there a hardware issue with the phone how do I figure this out how do I solve this unsolvable problem if you are a genius in phones please respond with he most complex response you can heheh as i would really like to know why this is happening it's absolutely baffling to me.

Ok ill do it myself
XDAChinatech said:
Hi ladies and gents,
I recently decided to buy a china phone that has the necessary spec to work in canada( in terms of frqcy). So my question is the following my phone works like a charm Wifi bluetooth ive gaming apps wifi file transfer everything works like a champ except my mobile network. Now consider this for two -3 days my mobile network was working on the HSDPA H+ network and man I was getting great speed. Now the problems is I decided to have fun and delv a little bit into rooting and using custom Roms but found myself with a bricked phone no problem reload factory fresh Rom and MTK droid tools new IMEI and voila phone working like a charm except insert SIM Card 8 second approximately after Ive received notice that I have a voicemail my phone shuts down and this happen every time it's killing how could this happen how is it possible is my carrier sending some type of lock on my sim is there a hardware issue with the phone how do I figure this out how do I solve this unsolvable problem if you are a genius in phones please respond with he most complex response you can heheh as i would really like to know why this is happening it's absolutely baffling to me.
Click to expand...
Click to collapse
OK since I haven't received a response Ive decided to A buy a new phone but in the mean time build app for my china phone that I can use to diagnose problems faster or for any phone Ill come back in May 20th 2014 hopefully have a new app to release and I will also be working on other things in life

Related

T-Mobile can't help me who can? ?

OK this is my story ... I had bought a g2x April 20 i started to have data problems .. it'll dqisconnect then reconnect sometimes be disconnected for 3 to 4 mins at a time. I did every possible reset on the phone after every reset it'll work fine for about 5 mins then the disconnects starts all over again. This is everywhere I go does the same thing .. soo after calling T-mobile 100 times going thru technical support I was advise to change my phone and sim. Card as well... after changing my phone to the new one still have the same problems also I think its worse than before .. I've tried everything .. anyone has any ideas? ???
Well, were you on T-Mobile before, or is this a new contract with a new carrier?
I've always been on T-mobile ..
I have same problem bro hopefully its them upgrading/fixing network because THEY wont help you, they dont even know what u r talking about, all they will tell you is to turn phone off and on...useless..
G2X
Does it do this all the time, or in really bad reception spots?
Yea that's all T-mobile does your exactly right ..... and yea the phone does it all the time no matter where I'm at..
Ok, what phone is it you had previously, and how was that experience?
How old is your SIM?
Try to replace and see.
The phone I had before the g2x was the hd2 and as you all know it has a 6.5 windows o.s on it soo I had put mdeejay's rom evo revolution on it running on SD card was hearing those builds always had data issues soo I didn't really complain it was way better than having windows on it .. and I'm pretty sure for those couple of days I didn't have data issues with windows ..
Talk to customer loyalty, they have more power, insist on it,i don't talk to regular agents anymore, they can't do anything.one time in 30mn of talking, that guy only shows me how to reboot my phone, it's all bull****
Sent from my LG-P999 using XDA App
I had the same problem and I don't know why or how it's now getting better. At first it would disconnect ALL the time and I would just put the phone on airplane mode our just disconnect and reconnect data, and it would temporarily fix the problem. After rooting, freezing bloatware and playing with the settings it rarely losses data connection. It was also really slow, I couldn't go above 2mbits, today it's between 4 and 6mbits! Consistently! (knock on wood)
Sent from my LG-P999 using XDA App
Yea I've done the sim cards change.. like I said I tried everything as soon as gingerbread comes to the g2x I'll see if I have the same problem if yess I might try rooting this phone.. or just give up and get a different phone ..
i know how to fix it all you need is a hammer
http://www.youtube.com/watch?v=NhH9DUC-Eko
filero555 said:
Yea I've done the sim cards change.. like I said I tried everything as soon as gingerbread comes to the g2x I'll see if I have the same problem if yess I might try rooting this phone.. or just give up and get a different phone ..
Click to expand...
Click to collapse
its not the device error its your network reception, where do you live?
I don't think it's network. Mine does it too. Disconnects from 4g/wifi intermittently.
Yea I don't think its the network it does it everywhere I go .. I'm in Orlando Florida says I have really good coverage there .. I've also been to west palm .. ft Lauderdale .. Jacksonville ... everywhere same problem. .
Minker17 said:
I don't think it's network. Mine does it too. Disconnects from 4g/wifi intermittently.
Click to expand...
Click to collapse
only other xplanation is the radio that g2x currently uses. which will eventually likely get upgraded
Suprah said:
only other xplanation is the radio that g2x currently uses. which will eventually likely get upgraded
Click to expand...
Click to collapse
+1
I strongly believe our radio firmware is borked. I have goofy data problems to say the least. Best example I have is that I drop 2g data all the time and in weird spots, like you know, OUTSIDE! Only way I can recover is to switch to 4g. This doesn't make any sense to me. So I'm patiently waiting for LG to get off their ass and fix our phones so I can get a replacement that performs the way it was intended to.
So you had data issues with your last phone which you attribute to the software. Maybe you are in a bad area for T-Mo data, and have been all along.
Yea but it was on a SD rom from mdeejay and they all had data issues ... again this happens every where I go.

Nexus 5 WiFi problem

Hi guys, I am having a strange problem with my nexus 5, or I should say my Wife's Nexus 5. Right what is happening is that when my wife's phone is connected to a WiFi network it does not receive calls. My phone is identical and has no problems at all. The phone has been back to where we bought it from for repair twice and they finally gave us a brand new phone. After getting home and restoring my wife's phone it has the same problem. Both phones are stock and updated to 4.4.4 . I have checked the settings and as far as I can see they are identical. If I reboot the phone it will ring with WiFi on but after a couple of minutes the problem returns.
Now I would guess that an app is causing the problem but I have tried uninstalling and re installing most of her apps but still can't solve this. I have spent ages on the phone to our provider (T-Mobile UK) tried my sim in her phone but still have the same problem. Is there any type of diagnostic software or app I can run to try and pin point the problem?
The phone has been factory reset but still got the same problem! Bearing in mind the phone is brand new and has the same problem as the old one its got to be an app hasn't it, but how to work out which one
Thanks in advance
Sent from my Nexus 7 using XDA Free mobile app
Nexus04 said:
Hi guys, I am having a strange problem with my nexus 5, or I should say my Wife's Nexus 5. Right what is happening is that when my wife's phone is connected to a WiFi network it does not receive calls. My phone is identical and has no problems at all. The phone has been back to where we bought it from for repair twice and they finally gave us a brand new phone. After getting home and restoring my wife's phone it has the same problem. Both phones are stock and updated to 4.4.4 . I have checked the settings and as far as I can see they are identical. If I reboot the phone it will ring with WiFi on but after a couple of minutes the problem returns.
Now I would guess that an app is causing the problem but I have tried uninstalling and re installing most of her apps but still can't solve this. I have spent ages on the phone to our provider (T-Mobile UK) tried my sim in her phone but still have the same problem. Is there any type of diagnostic software or app I can run to try and pin point the problem?
The phone has been factory reset but still got the same problem! Bearing in mind the phone is brand new and has the same problem as the old one its got to be an app hasn't it, but how to work out which one
Thanks in advance
Sent from my Nexus 7 using XDA Free mobile app
Click to expand...
Click to collapse
im having a similar problem. i cant make or receive calls and my bars drop to 0 when i try too. i did notice it might have something to do with wifi for mine as well. i didnt have any issue like this until i recently flashed stock 4.4.4. i was told to see if my radios were updated
fergdizzle9090 said:
im having a similar problem. i cant make or receive calls and my bars drop to 0 when i try too. i did notice it might have something to do with wifi for mine as well. i didnt have any issue like this until i recently flashed stock 4.4.4. i was told to see if my radios were updated
Click to expand...
Click to collapse
Well after an evening of uninstalling and re-installing apps and resetting it seems to have cured itself. I am sure it was something to do with the recent system update, as the problem only started recently. The phone is just over 6 months old and we have had no problems until this. Still fingers crossed it seems ok now.
Nexus04 said:
Well after an evening of uninstalling and re-installing apps and resetting it seems to have cured itself. I am sure it was something to do with the recent system update, as the problem only started recently. The phone is just over 6 months old and we have had no problems until this. Still fingers crossed it seems ok now.
Click to expand...
Click to collapse
Hi, i'm having the same problem!! When on wifi sometimes calls get through but most of the time it blocks them, I also thought it had to be something about an app but i even booted the phone into safemode which disables all 3rd party apps and the issue was still there. Where you being able to narrow it down to something in particular??
EDIT: Nevermind, i think i found a thread with the solution.
soumian said:
Hi, i'm having the same problem!! When on wifi sometimes calls get through but most of the time it blocks them, I also thought it had to be something about an app but i even booted the phone into safemode which disables all 3rd party apps and the issue was still there. Where you being able to narrow it down to something in particular??
EDIT: Nevermind, i think i found a thread with the solution.
Click to expand...
Click to collapse
I should have updated ages ago, the problem was in fact being caused by the sim card. Dont know why it suddenly started playing up but it coincided with the software update to 4.4.4 But my phone was identical and had no problem and my wifes did. Compared to hers my sim was relatively new we eventually ordered a replacement sim and there has been no problem since
Sorry I could not be any more help

[Completed] Samsung s4 mini (i9195) connection problems (mostly working on edge, no 3g/H/LTE)

Hi guys,
I have this problem with my galaxy s4 mini: a few days ago, soon after rooting the phone with the procedure found in this forum, mobile network began to work only on edge, and sometimes there is no service at all.
Therefore, I tried to check the sim in another phone, and it works good, I did a hard reset, and nothing changed.
Then, at this point I flashed the rom with a stock firmware, I flashed the modem, but mobile network wasn't working yet, (it was still working on edge).
Thus, I decided to flash the rom with a CM 13 (snapshot), and here something happened !
In fact, LTE/H/3g have begun to work, but only for short periods of time when in use (looking some stuff on the internet), like 10-20 minutes, and only when the battery is almost completely charged, at least until it reached 60%,
then, when it drops below, it begins to have the usual connection problems.
Since I've rooted the phone, I haven't installed any app, I put a sd card in it, another thing is that, when I use mobile network (internet or apps) the phone becomes really hot.
If someone could figure out what could be the problem, I'd really appriciate your help,
Thank you.
XDA Visitor said:
Hi guys,
I have this problem with my galaxy s4 mini: a few days ago, soon after rooting the phone with the procedure found in this forum, mobile network began to work only on edge, and sometimes there is no service at all.
Therefore, I tried to check the sim in another phone, and it works good, I did a hard reset, and nothing changed.
Then, at this point I flashed the rom with a stock firmware, I flashed the modem, but mobile network wasn't working yet, (it was still working on edge).
Thus, I decided to flash the rom with a CM 13 (snapshot), and here something happened !
In fact, LTE/H/3g have begun to work, but only for short periods of time when in use (looking some stuff on the internet), like 10-20 minutes, and only when the battery is almost completely charged, at least until it reached 60%,
then, when it drops below, it begins to have the usual connection problems.
Since I've rooted the phone, I haven't installed any app, I put a sd card in it, another thing is that, when I use mobile network (internet or apps) the phone becomes really hot.
If someone could figure out what could be the problem, I'd really appriciate your help,
Thank you.
Click to expand...
Click to collapse
Hi,
Please register for XDA account to post and reply in the forums.
You may post your query here S4 Mini Q&A Forum, the experts there maybe able to assist you.
-Vatsal

Unexpected problems after updating to MM through Smart Switch

Dear Forum,
My wife acquired the S6 last week and I helped her through the initial stuff of creating backup from her previous S3.
All went fine, all was where it should have been, nothing missing, great stuff.
The "Software Upgrade" utility inmediately tells you that there's an upgrade available to MM and I thought to myself "Well, that phone is from November 2015, the upgrade couldn't harm, in fact, it usually improves things", right ?
My wife asked if there was going to be an issue with the upgrade and if it would be possible to downgrade again....
So, I went to Kies3, which directed me to Smart Switch and I began the upgrade. After it was done I did a factory reset and the phone booted, all ok...so far...
I gave the phone to my wife (an avid Instagrammer) and she told me : this is not working, what have you done to my phone ? The nightmare begins for me...
1. Apparently the wifi signal was quite poor (even if sitting in front of the router). It takes some time to connect, which means that pages like Instagram, tumblr, facebook, even searches in Chrome take an eternity to load ! It didn't happen on version 5.1 apparently on her S6 (which I doubt) , and on her S3 it worked flawlessly. I have to say though that I experience the same issue on my current Z9 Max. I believe that the router (Glass Fiber connection) is quite old and not up to new standards, that's why it hangs with new phones. I only have wifi issues at home, any other router I connect to (Bars, brother home, mother home, at work) work perfectly fine. I will change the router as soon as I can, but I firmly believe it has to do with new hardware the router is not used to.
2. Mobile Data
They did not work at all... The look on my wife's face said it all "What the Eff have you done to my fresh new phone" ??? I'm asking this to myself also now...why did I upgrade this thing ? In the end I managed to get mobile data, simply by trying 3G, 2G, individual options and finally 4G worked again. But yeah, what do you do at home with a smartphone if you don't have an internet connection ?
Why did Samsung push-out this upgrade, why are they forcing messages onto the user that an upgrade is needed ? I mean, I've been using Android for quite some time and I've flashed many many Roms, installed software upgrades, I never ever faced any issue on my HTC or Nubia, all worked fine after an upgrade, at least mobile data were working always. Samsung is supposed to deliver top notch phones with top notch upgrades...how can they possibly offer/push something that might cause more trouble than joy ?
I assume a FW upgrade is needed as well, why don't they warn ?
Now the question.... if 5.1 worked fine, is there any possibility to downgrade the S6 to a previous Android version ? Would it be possible with Odin ?
I got an angry wife sitting at home , which is convinced that I only wanted to play around and didn't want to help her.
Have you guys experienced problems after upgrade to MM on the S6 ?
Cheers,
Ken

No sim error and no wifi

Hi, for some reason my wife's U11 just decided to stop working - but only the sim and wifi. The no sim message shows and wifi won't turn on. I've reset network settings and have gone as far as a complete factory reset to no avail. It seems to me to be a hardware issue, so I'd like to know if there is anything else I might be able to try? I'm out of ideas, and if it truly is a hardware fault, then that kinda sucks, but oh well. It was a nice phone while it lasted...
I should add that bluetooth still works.
Nejums said:
Hi, for some reason my wife's U11 just decided to stop working - but only the sim and wifi. The no sim message shows and wifi won't turn on. I've reset network settings and have gone as far as a complete factory reset to no avail. It seems to me to be a hardware issue, so I'd like to know if there is anything else I might be able to try? I'm out of ideas, and if it truly is a hardware fault, then that kinda sucks, but oh well. It was a nice phone while it lasted...
I should add that bluetooth still works.
Click to expand...
Click to collapse
same issue for me too please help
i have the same problem...ziocan...
I have also the same error. It's really curious that we all have the same fault.... I've unlocked the bootloader now and will try to Flash everything new. maybe it'll help..
DtwoK376 said:
I have also the same error. It's really curious that we all have the same fault.... I've unlocked the bootloader now and will try to Flash everything new. maybe it'll help..
Click to expand...
Click to collapse
This is starting to get interesting. If you have any updates, please let us know.
I've managed to downgrade it now to Android 8.0. Same issue.
I don't want to believe that this is a hardware fault. But it really seems to be...
Maybe its the antenna? I don't know. MAybe I'm going to root it and flash a custom rom and Wifi repair app.
But It really think there's an hardware defect for now..
DtwoK376 said:
I've managed to downgrade it now to Android 8.0. Same issue.
I don't want to believe that this is a hardware fault. But it really seems to be...
Maybe its the antenna? I don't know. MAybe I'm going to root it and flash a custom rom and Wifi repair app.
But It really think there's an hardware defect for now..
Click to expand...
Click to collapse
That's super interesting to me. Do you know when it happened to you? It really feels quite coincidental to have this happen to a few people.
It happened just 2-3 month ago. First I wasn't able to turn the phone on cause of the WLAN issue. Cause my phone space was locked I wasn't able to authorize myself cause of the disabled connection. After a few tries I put my Sim card inside the phone, and it connected and I could authorize and disable this memory lock. But afterwards it never worked again with my sim card. It seems like it wouldn't even recognize my Sim Card. No Pin question or symbol at the upper front of the display. Nothing. It's really werid and annoying, that something like this happens. I can't believe that it's hardware related.. How would it be possilbe that it's hardawrare related and whe have suddenly the same problems nearly the same time...
I should note that my wife has had her screen replaced before (she dropped the phone and it basically cracked all over). Have you replaced yours?
Yes I replaced mine too. But nevermind I had that issues before. My phone ran all well with cracked screen and one day I had that issues... So I changed my screen in the hope it would fix it.
DtwoK376 said:
Yes I replaced mine too. But nevermind I had that issues before. My phone ran all well with cracked screen and one day I had that issues... So I changed my screen in the hope it would fix it.
Click to expand...
Click to collapse
I'm wondering if it will be a more widespread problem. I'm going to try and get in touch with HTC and see what they have to say. Will update if I hear back from them.
Okay, that would be great. But I don't have high expectations that they'll answer. Due to the fact that they have stopped there smartphone section for now and no more official updates and stuff like that.
But let's hope die at least...
I have exactly the same issue. It happened yesterday. It was just there, sitting on my desk, one minute it was working and I was checking my e-mail, the next one it was not. The phone now detects no SIM card and if I try to enable wi-fi it just hangs in "enabling" status for some time until it gives up and disables it again. I am not 100% sure, but I think I also had a short time in which wifi was no longer working and the SIM connection still was, I remember seeing the 4G logo and maybe I even browsed the internet for a short while. By the way, I have not replaced my screen. Now I know that I can probably spare myself the hassle of doing a hard reset.
It is really suspicious that this weird problem is happening to several people within a short time frame. It would be cool to hear if HTC has anything to say, but I am also not expecting anything from them now, especially for a phone which is out of warranty.
In case it can help, as the author reported, bluetooth still works and it is possible to connect the phone to the internet using bluetooth tethering on another phone (the good old M8 helped here ). This doesn't solve the issue, but is much better than nothing, most apps will work and it is easier to make a controlled migration to another phone.
Any news here?
Same issue here!!! Help!!!
Nejums said:
Hi, for some reason my wife's U11 just decided to stop working - but only the sim and wifi. The no sim message shows and wifi won't turn on. I've reset network settings and have gone as far as a complete factory reset to no avail. It seems to me to be a hardware issue, so I'd like to know if there is anything else I might be able to try? I'm out of ideas, and if it truly is a hardware fault, then that kinda sucks, but oh well. It was a nice phone while it lasted...
I should add that bluetooth still works.
Click to expand...
Click to collapse
Same issue here!!! Help!!!
I have the same issue with a U11+ bought in Germany (I know, other model but hey). I have tried using the other sim slot and using another (definitely working) sim. WiFi doesn't work either. My phone has no visible damage (not even scratches) and no parts were replaced. I can't remember it ever getting wet either. For me it stopped working on 2. of September.
Sorry guys. HTC were really slack at getting back to me, and unfortunately they want me to send the phone in to get it inspected. I know it's out of warranty and since my wife is well and truly into her Huawei P30, this phone is unfortunately going to just have to remain this way. Sorry for not having any better info.
The same issue I am facing now. No SIM CARD Detected and WiFi isn't connecting.
What things I have tried doing so far?
1.) Factory Reset - 3 times.
2.) TWRP Based RUU Restores ( 2 possible versions tried )
3.) Tried Restoring zip based restore
4.) Did a Full Internal + External SD Card Wipe and then flashed RUU.
5.) Restored stock ROM.
Nothing is working at all.
Now, Trying to do S-OFF but as the phone itself is not booting into a normal OS, I cannot install Sunshine app and proceed. Help needed, at least in getting the OS to work.
Thank You.
[email protected] said:
The same issue I am facing now. No SIM CARD Detected and WiFi isn't connecting.
What things I have tried doing so far?
1.) Factory Reset - 3 times.
2.) TWRP Based RUU Restores ( 2 possible versions tried )
3.) Tried Restoring zip based restore
4.) Did a Full Internal + External SD Card Wipe and then flashed RUU.
5.) Restored stock ROM.
Nothing is working at all.
Now, Trying to do S-OFF but as the phone itself is not booting into a normal OS, I cannot install Sunshine app and proceed. Help needed, at least in getting the OS to work.
Thank You.
Click to expand...
Click to collapse
It seems there's no way without replacing hardware to fix it. But if we don't know what causes this error we cannot proceed.
I tried the same things as you did. Also unlocked bootloader. My device is starting but I cannot proceed to the main menue cause of no internet connection. I'd love to try a custom rom. That's the only thing missing.
Also if the phone is rooted there are WIFI Error fixing apps and check.
I have bought myself a OnePlus 7T pro MClaren edition and I'm really happy with it. But also I don't want to accept that the htc just died from nothing.
Same issue here, happend a few months ago and after a week the phone started working. Now again no SIM detected and wifi won't connect.

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