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

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

Related

WiFi is connected even when 20KM away from hotspot

As title says, I went to the theatre today and realized I still had 5 bars of WiFi when I was 20KM away from home, was this a one time glitch or is it a known problem?
sounds familiar....
hey there,
I'm down here in New Zealand with a both versions of device, X & XL
my XL has the problem you speak about.
When i leave my house, it takes for ever to disconnect, pain of course because the 3G or 4G wont flip on while it thinks it is still on wifi.
When i return to my home/SSID the device takes for ever to reconnect, if it even does. i go to the wifi settings, and the connection initiation is just cycling, end attempts to connect, over and over.
I've thought i had fix it once before, by installing a new RUU. I was on RUU 1.77.708.3 Asia, could only find 1.77.708.2.
this seemed to fix disconnection on departure problem, but the cycling and hunting continued when i returned.
I have since found that this must be linked to the bluetooth. I say this because while the wifi is hunting/cycling i flip off the bluetooth and the wifi reconnects within seconds. I tested this more and with bluetooth disabled i have no wifi problems at all, but with bluetooth on, its gives my problems.
The second issue is the bluetooth its self. unlike my flawless desireHD, i can only stream music to my car head-deck, when i get a phone call, the music cuts out like it should, but the phone audio doesn't happen, been like that from the get go. wifi was a problem all the time because this dodgy bluetooth was on all the time so i could listen to music in the car and hopefully one day take calls in the car also.
well i have good news for me, today i flashed CleanROM.3.Standard .
http://forum.xda-developers.com/showthread.php?t=1655011
Today for the first time I can take calls over bluetooth in the car. this is good news because i was certain this was a hardware issue, even it it is, i am confident it can be resolved in the software now.
I'll do a few drive-by's my house tonight to test this wifi, see if that got resolved also. I'll let you know the result later.
I tell you all this in-case our issues are the same, it might save you some time... maybe.
good luck with, and check that bluetooth theory because i'm dying to know if its a common problem.
Cheers
Thank you for that very detailed post.
I also have bluetooth running (connected) to my car and it works flawlessly but it may be a cause for the WiFI staying connected as well. I will turn it off and see how it goes as the week progresses and keep this updated as well.
I would also like to flash clean rom but I am using the Rogers variant so I am worried it might not be compatible.
an_xda said:
As title says, I went to the theatre today and realized I still had 5 bars of WiFi when I was 20KM away from home, was this a one time glitch or is it a known problem?
Click to expand...
Click to collapse
This has been a known problem since the HOX has been released.
an_xda said:
As title says, I went to the theatre today and realized I still had 5 bars of WiFi when I was 20KM away from home, was this a one time glitch or is it a known problem?
Click to expand...
Click to collapse
First reaction: It's not a glitch, that's just really good WiFi...
Sent from my HTC One X using xda premium
I did those drive-by's......
Me again...
I did those drive-by's of my house, unfortunately there is no joy for me, still the WiFi behaves the same as before.
Its funny, down here we have assumed that the X is the same as the XL apart from the cpu. But in reality they are two completely different machines.
So I turned off Bluetooth and the problem does not occur anymore, WiFi disconnects as needed but it is obviously not a permanent fix. Another problem is the WiFi being on and off with 5 bars swapping between 4G and WiFi...
CleanROM again......
OK, I was doing some more reading and have since found that the developer of CleanROM has released a GSM patch so the hotspot on his ROMs now work.
You might remember i said earlier in this thread that CleanROM.3 worked best for me but the hotspot didn't work so i couldn't use it.
Now i have CleanROM installed again, Hotspot works, bluetooth both Audio & Phone work, and the WiFi at this stage seems to be doing what it should without having to manually toggle the bluetooth on and off. No apparent bugs to report at this stage.
Software Info on phone says this version is built around 1.29.728.12. I don't know if that means all ICS version of that number are good or not, but again its a place to start. Its looking like some versions have the issue and some don't, this re-assures me that it can be resolved within the software. I don't mind testing this stuff, as long as the developers don't mind developing it, and its a good learning curve.... its all good.
Check this CleanROM work out, it could be your answer.
http://forum.xda-developers.com/showthread.php?t=1655011
I'll check back in in a day or so and update you on my WiFi situation.
Cheers!
Thanks again for all your research and assistance.
I have the Rogers variant, should be no problem flashing it to CleanROM correct? Also, for each new CleanROM update, I would have to wipe and flash again? Seems troublesome.
Can you advise on the process required to flash the ROM? I am new to Android and the steps in the thread is not as comprehensive.
Many thanks.
hi there, show you how to load roms, thats a big job for me....
...I'm new to this myself, but i know a tutorial that will save me a ton of typing.
you need to do 2 things first, before flashing roms.
1,Unlock your bootloader
2,Install clockworkmod
have a look at this ,
http://forum.xda-developers.com/showthread.php?t=1647272
Study this thread, very helpfull. He explains how to install clockworkmod on your device, once you have that done you are 80% there, and you only have to do this process once, once done, flashing roms will always be the last 20%, you never do this again.
Infact flashing roms and backing up your own rom is a very simply task. the commands are on a list, just choose them as you go. To backup, wipe, and flash a new rom takes me less than 10 minutes.
Go to you tube and look at this, this shows you how Clockworkmod works.
http://www.youtube.com/watch?v=XOQEmQYFEeY
dont be freaked out, take it step by step, you'll be fine.
I also started this thread, regarding working roms for this wifi issue
http://forum.xda-developers.com/showthread.php?p=27585586#post27585586
no one has replyed yet, but it might yeild helpfull info later on perhaps
Thanks, I will do this shortly. Will unlocking the bootloader or doing any of the aforementioned steps give me the tampered signature?
Yes
yes, your phone will be marked.
Boot loader will be marked "Unlocked" , even if you relock it, its just gonna say "relocked" . nothing you can do about that.
The boot loader will also say "tampered" if you update the rom, but that msg dissappears completely if you update the phone via an RUU.exe
Can this hurt me with regards to warranty requests? I know I can remove the tampered status by flashing a stock ROM but I am concerned re: bootloader.

[Q] What could cause such a problem?

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

[Q] No cellular connection at all, seemingly at random?

Alright, after hours of searching, I've decided to ask the forum for help. Here's my dilemma, I just recently flashed the Google Play Edition ROM to my M8, and I love it. Its awesome, and I've been utilizing/exploring as much as the customization options as possible since I flashed the ROM a day ago.
But today, my cellular connection completely cut out. All I get is a little empty triangle in the top right hand corner of my screen that's supposed to show the signal. Its like my phone doesn't even know its a Verizon phone. Pulling the SIM does nothing, rebooting does nothing. So I decided to make a backup using TWRP and I wiped all the data from my phone (still keeping the ROM of course) and now my service works again.
So I figure I must have messed with some setting that ended up having this result, being that just clearing data solves the issue. I could just start over, but I've already done so much and I don't want to just give up. Does anyone have any idea as to what I can do to get my cellular connection back?
Thank you so much in advance!

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

[Completed] Phone crashing & not detecting SIM

Hi,
I hope I'm posting this to the right thread.
I have an LG G3 International D855 model and lately I've been getting random freezes with crashes with every ROM I try and nothing seems to fix it. I tried 3 different ROMs, factory reset, cleaning the SIM tray, cleaning the battery contacts, everything I can think of. I'm still getting this and it is very annoying, the phone is basically unusable, since I have no signal 60% of the time and phone keeps crashing.
As I'm writing this, my SIM actually got detected, but after I went and searched for Network providers 3 times, it crashed every time.
It also crashes randomly while using the phone, but overheating seems not to be the problem, since it sometimes crashes even when cool and didn't crash when I stress tested the phone. The battery output is also 3.8V, as it should be.
What is the problem here?
n3onis said:
Hi,
I hope I'm posting this to the right thread.
I have an LG G3 International D855 model and lately I've been getting random freezes with crashes with every ROM I try and nothing seems to fix it. I tried 3 different ROMs, factory reset, cleaning the SIM tray, cleaning the battery contacts, everything I can think of. I'm still getting this and it is very annoying, the phone is basically unusable, since I have no signal 60% of the time and phone keeps crashing.
As I'm writing this, my SIM actually got detected, but after I went and searched for Network providers 3 times, it crashed every time.
It also crashes randomly while using the phone, but overheating seems not to be the problem, since it sometimes crashes even when cool and didn't crash when I stress tested the phone. The battery output is also 3.8V, as it should be.
What is the problem here?
Click to expand...
Click to collapse
Hello,
You are already a senior member and you should know your way around XDA.
XDA Assist is for newbies finding their way around XDA Developers.
Please post in the right section. Thread closed!
Regards
Vatsal,
Forum Moderator.

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