Develop Bugs

Radio version

Installed my first rom a few days ago, leedroid 2.2.2. Also installed the recommended radio for it. My phone was perfect on a T-Mobile Uk signal.
Today i had my number ported over to giffgaff which uses O2 network. But my signal has been up and down all day and disappeared at times. Other O2 users around me, including one with a Desire HD, had no signal problems at all.
So my question is, are different radios better for different networks, or just different radios work better with different roms?

As far as I have read and heard, different people will profit from different radios. you just need to try out some other radios and see which one goes well with your new provider and the places you go. location can also affect which radio is better for you too. just try it out

Tones1971 said:
Installed my first rom a few days ago, leedroid 2.2.2. Also installed the recommended radio for it. My phone was perfect on a T-Mobile Uk signal.
Today i had my number ported over to giffgaff which uses O2 network. But my signal has been up and down all day and disappeared at times. Other O2 users around me, including one with a Desire HD, had no signal problems at all.
So my question is, are different radios better for different networks, or just different radios work better with different roms?
Click to expand...
Click to collapse
Yeah it's just a matter of trial and error, diffrent users get diffrent results from diffrent radio's. your best bet is to try a few, see which ones work best for you

Thanks for the replies. Going to try a few different radios now.

What's giffgaff?
If it's a carrier, sometimes even though they may use signal of major networks they might not necessarily be the same signal.
For example in UK, Virgin uses the T-Mobile signal but the signal strength is often different.

RobSimmo said:
What's giffgaff?
If it's a carrier, sometimes even though they may use signal of major networks they might not necessarily be the same signal.
For example in UK, Virgin uses the T-Mobile signal but the signal strength is often different.
Click to expand...
Click to collapse
According to their site the signal is the same. The users say it is the same too. I think O2 actually own giffgaff, but just have this separate company for whatever reason.

RobSimmo said:
For example in UK, Virgin uses the T-Mobile signal but the signal strength is often different.
Click to expand...
Click to collapse
Pardon my ignorance but how could that be?

ghostofcain said:
Pardon my ignorance but how could that be?
Click to expand...
Click to collapse
Its easy and true, virgin dont own there own antennas, so they buy air time of other networks, these networks obviously value there own customers more, so when antennas become full, they will drop the signal partially or totally for the other company. The same happend with 3 when they first started. They were using o2's network. But eventually had to develop there own because of all the dropped calls, there customers were having
Sent from my Desire HD using Tapatalk

Try the radio that's in my signature, it helped me some.

Tones1971 said:
Installed my first rom a few days ago, leedroid 2.2.2. Also installed the recommended radio for it. My phone was perfect on a T-Mobile Uk signal.
Today i had my number ported over to giffgaff which uses O2 network. But my signal has been up and down all day and disappeared at times. Other O2 users around me, including one with a Desire HD, had no signal problems at all.
So my question is, are different radios better for different networks, or just different radios work better with different roms?
Click to expand...
Click to collapse
You can try a list of Radios from the the thread below. All credits goes to Drakknar.
http://forum.xda-developers.com/showthread.php?t=877295

AndroHero said:
Its easy and true, virgin dont own there own antennas, so they buy air time of other networks, these networks obviously value there own customers more, so when antennas become full, they will drop the signal partially or totally for the other company. The same happend with 3 when they first started. They were using o2's network. But eventually had to develop there own because of all the dropped calls, there customers were having
Sent from my Desire HD using Tapatalk
Click to expand...
Click to collapse
i call shenanigans (spelled right?). and yes, i do work in the business. that's not how radio works in a cell network.

kendong2 said:
i call shenanigans (spelled right?). and yes, i do work in the business. that's not how radio works in a cell network.
Click to expand...
Click to collapse
Who do you work for? I used to work in the online returns department for o2 and i can assure you thats exactly how it works. Each "cell tower" as you put it, can only carry a certain anount of calls, once this limit is reached, calls are deferred to another "cell site" or in the case as i explaned dropped completely, a simple google search will show you the same information, so please educate yourself in future before calling me a liar!
Sent from my Desire HD using Tapatalk

AndroHero said:
Who do you work for? I used to work in the online returns department for o2 and i can assure you thats exactly how it works. Each "cell tower" as you put it, can only carry a certain anount of calls, once this limit is reached, calls are deferred to another "cell site" or in the case as i explaned dropped completely, a simple google search will show you the same information, so please educate yourself in future before calling me a liar!
Sent from my Desire HD using Tapatalk
Click to expand...
Click to collapse
so you work in customer care and think you know how the network works? interesting.
i operate an HLR/CNTDB (google HLR, you won't find infos about the CNTDB) for t-mobile germany (now deutsche telekom). i get payed for manipulating subscribers in this central database of every GSM, UMTS and LTE network. but i am sure your experience in customer service has tought you the details of subscriber administration and radio network operation better than the trainings i got...
btw, i never doubted that cells can resize themselfes (called "breathing cell" btw), it happens all the time, everywhere, every day. but the algorithms involved do not care which reseller sold the simcard to the customer. there are mechanisms that can kick out certain cards, but network operators will use these only if forced by higher powers, like catastrophic events. and even then it doesn't work as you described. network access is shut down, then reopened in this order:
1. network technicians (me for example)
2. EMT (police, medics)
3. politicians, secret services, other officials
(4. maybe other high prio subscribers)
5. everybody else, gradually and with a random distribution.
the mechanism that is used here is called the ACCESS CLASS of the simcard.

kendong2 said:
so you work in customer care and think you know how the network works? interesting.
i operate an HLR/CNTDB (google HLR, you won't find infos about the CNTDB) for t-mobile germany (now deutsche telekom). i get payed for manipulating subscribers in this central database of every GSM, UMTS and LTE network. but i am sure your experience in customer service has tought you the details of subscriber administration and radio network operation better than the trainings i got...
btw, i never doubted that cells can resize themselfes (called "breathing cell" btw), it happens all the time, everywhere, every day. but the algorithms involved do not care which reseller sold the simcard to the customer. there are mechanisms that can kick out certain cards, but network operators will use these only if forced by higher powers, like catastrophic events. and even then it doesn't work as you described. network access is shut down, then reopened in this order:
1. network technicians (me for example)
2. EMT (police, medics)
3. politicians, secret services, other officials
(4. maybe other high prio subscribers)
5. everybody else, gradually and with a random distribution.
the mechanism that is used here is called the ACCESS CLASS of the simcard.
Click to expand...
Click to collapse
Look guy all im saying is when i worked for o2, that is what we were told, when our antennas were full, it automatically dropped the calls of 3 subscribers..... i really dont understand the in's and out's of this. So any kind of retort is feutile. Sorry if i offended you. I didnt mean it
Sent from my Desire HD using Tapatalk

AndroHero said:
that is what we were told
Click to expand...
Click to collapse
there's your problem... and no worries, no offense taken

Is anyone else having signal issues? Possible baseband update?

I recently purchased a samsung captivate glide and I have noticed very spotty coverage and dropped cell connections. Whenever I am indoors I cannot get a signal. The cell reception is very sensitive and constantly shows no connection. I was unsure if anyone else was having this problem?
I found another thread that had a loose sim card issue and attempted the fix but this did not work. I've also tried my sim in another phone in which i had no problem with cell reception. I've relashed the ROM and Kernal multiple times, rooted, unrooted, nothing seems to fix my reception issue... I was not sure i there was a baseband update or I just have faulty hardware. I'm eager to get this phone working at full capacity. How can I get it working properly?
Pertinent Info:
Android Version 2.3.5
Basband Version I927UCKI3
Kernal Version 2.6.36.3
Build Number GINGERBREAD.UCKI3
Carrier AT&T
Thanks in advance.

CommanderXander said:
spotty coverage and dropped cell connections
Click to expand...
Click to collapse
Sounds like status quo for AT&T
On a serious note; I am not having any such issues here in southern Louisiana where I usually don't get anything but Extended; rarely ever see 3G.

Been looking around for more information. I'm going to try and get a new sim and see what happens. Looks like i'm stuck for the time being :/

CommanderXander said:
I recently purchased a samsung captivate glide and I have noticed very spotty coverage and dropped cell connections. Whenever I am indoors I cannot get a signal. The cell reception is very sensitive and constantly shows no connection. I was unsure if anyone else was having this problem?
I found another thread that had a loose sim card issue and attempted the fix but this did not work. I've also tried my sim in another phone in which i had no problem with cell reception. I've relashed the ROM and Kernal multiple times, rooted, unrooted, nothing seems to fix my reception issue... I was not sure i there was a baseband update or I just have faulty hardware. I'm eager to get this phone working at full capacity. How can I get it working properly?
Pertinent Info:
Android Version 2.3.5
Basband Version I927UCKI3
Kernal Version 2.6.36.3
Build Number GINGERBREAD.UCKI3
Carrier AT&T
Thanks in advance.
Click to expand...
Click to collapse
Try pulling the battery cover and see if your SIM card is loose? I've advised for a couple different folks having signal issues the same thing, nobody else seems to have the same problem I did - using a smartphone SIM, it looked like the metal cage for the SIM card was a millimeter too large in width and height, I used some strong clear tape to hold the SIM in place and havent had any issues since...
HTH!
L4T
//Edit - I need to read the _ENTIRE_ post before replying - sorry, I'm fresh out of ideas if the loose SIM card wasn't the problem :\ -tidE\\

Ok I take no credit for this, but felt bad about the useless post above, crawled a couple more posts this morning, and it looks like mariol66 may have found another solution -
mariol66 said:
I kept losing data recently running osimood, went to network settings and changed carrier option from gsm/hspa to hspa only, I haven't disconnected yet
Sent from my SAMSUNG-SGH-I927R using xda premium
Click to expand...
Click to collapse
If that works for you, thank _him_, I'm just trying to get the word out
L4T

hi similar problem .have you got solved?
CommanderXander said:
I recently purchased a samsung captivate glide and I have noticed very spotty coverage and dropped cell connections. Whenever I am indoors I cannot get a signal. The cell reception is very sensitive and constantly shows no connection. I was unsure if anyone else was having this problem?
I found another thread that had a loose sim card issue and attempted the fix but this did not work. I've also tried my sim in another phone in which i had no problem with cell reception. I've relashed the ROM and Kernal multiple times, rooted, unrooted, nothing seems to fix my reception issue... I was not sure i there was a baseband update or I just have faulty hardware. I'm eager to get this phone working at full capacity. How can I get it working properly?
Pertinent Info:
Android Version 2.3.5
Basband Version I927UCKI3
Kernal Version 2.6.36.3
Build Number GINGERBREAD.UCKI3
Carrier AT&T
Thanks in advance. [/QUOTE
Recently i purchased from ebay imported to India.I got similar problem.Signal is consistently not good,even near the tower.Have anyone got similar problem solved?Please help me.
Click to expand...
Click to collapse

be more specific on your problem,is it like the person you quoted,your on 2.3.5 ect?

[Q] External antenna experience?

Hi, after a few attempts at searching for info about the external antenna on the nexus, I think I finally found something... has anyone tried this part:
http://www.telcoantennas.com.au/site/patch-lead-samsung-nexus-s
This is by the same company that makes a Galaxy SII patch lead. I've read all the threads about breaking the internal antenna by using an incorrect connector, but a couple of people mentioned towards the end that they tried this brand and it worked perfectly.
I'd like to try this because when I drive through WI I have very poor / no reception, even though I'm driving down the one corridor (I94/I90/I35) that T-Mobile is supposed to completely cover. Most of the time I can't even get enough signal to send a text. Since google maps can't do routing offline I really would like to boost my signal at least up to 2G all the way through the state, and if I got a good enough signal to stream music that would be even better. Also, it seems like I always hit a snow storm when I go through. I'd rather not be stranded w/o signal if something happened.
Hopefully this + a good (5db or greater) car antenna + a second phone back that I can drill a hole in would make the phone usable on road trips...

I think it's a risk of breaking that port. And besides, what kind of antenna are you going to connect? Isn't roaming offered if you were to NEED cell service? Have you tried flashing other radios from josteink's radio dumps collection? Which radio are you on now?

Don't take the risk, just get the Wilson cradle signal booster. And for maps, you can go into settings and download areas to offline cache.
Sent from my Galaxy Nexus using Tapatalk 2

bodh said:
I think it's a risk of breaking that port. And besides, what kind of antenna are you going to connect? Isn't roaming offered if you were to NEED cell service? Have you tried flashing other radios from josteink's radio dumps collection? Which radio are you on now?
Click to expand...
Click to collapse
I'm on T-Mobile pre-paid. They claim they have service but it doesn't come through. I've tried a couple of radios but this has been the case with other phones for the past 5 years. They just don't have much / any service. (T-mobile prepaid shows IA as having 2G service but they don't actually let you connect, even though they own the company that owns the towers).
JPBeard21 said:
Don't take the risk, just get the Wilson cradle signal booster. And for maps, you can go into settings and download areas to offline cache.
Sent from my Galaxy Nexus using Tapatalk 2
Click to expand...
Click to collapse
I already have the official car dock so I'd rather not dispose of that. I can't download maps to cover the whole route - 400 - 500 miles - but even if I'm in an area I have downloaded I thought it needed networking to actually do the routing...

ChrisAshton84 said:
I already have the official car dock so I'd rather not dispose of that. I can't download maps to cover the whole route - 400 - 500 miles - but even if I'm in an area I have downloaded I thought it needed networking to actually do the routing...
Click to expand...
Click to collapse
I can understand not wanting another dock. I don't have one so its hard to know what kind of solutions would work. Wilson makes many different adapters, antennas and amplifiers, check them out.
With maps, I believe you can download more area depending on level of zoom and I also think navigation would work as long as you start in a coverage area, been a long time since I used it and lost coverage. Not sure about rerouting abilities without coverage or cached maps. I would try to at least cache the areas you know have little to no service. You may be better with an offline solution such as Tom Tom, Navigon, or one of the many other ones. Keep us posted, interested to see what you come up with.
Sent from my Galaxy Nexus using Tapatalk 2

s4 mini duos network problems

Hello,
I appeal to all the users that have samsung galaxy s4 mini duos (i9192) to give me a honest opinion on their experience usage about this issue
I want to buy the phone because i have 2 sims, work and home and need both always on but i've been read that this phone has major problems with network signal such as:
"Poor network performance. I'm forced to restart 4 to 5 times per day to regain the network access. I checked from my service providers, no issues on their part. Dual Sim a failure. Apart from network issues, the design, ram performance are average. I'll recommend not to buy this instrument unless the dual-sim network problem is rectified."
Like this, there are many more in samsung phone forum.
Anyone can give me their opinion?

False. I'm using it without problems with two sims work/private. Signal strength may be lower, but it's not so bad. Device is very fast, in antutu it has more points than 4 core htc one x+ or galaxy s3.
Software is bit buggy, but nothing serious.
Wysłane z mojego GT-I9192

mar10o said:
False. I'm using it without problems with two sims work/private. Signal strength may be lower, but it's not so bad. Device is very fast, in antutu it has more points than 4 core htc one x+ or galaxy s3.
Software is bit buggy, but nothing serious.
Wysłane z mojego GT-I9192
Click to expand...
Click to collapse
Thanks for the quick answer.
Yes, i have read many reviews and all shows very good results. But if you go to http://reviews.in.samsung.com/7463-en_in/GT-I9192ZWAINU/samsung-galaxy-s4-mini-reviews/reviews.htm you will see the very bad opinions.
Seems that the phone in bad coverage areas lost signal and don't regain signal unless you restart the phone or the network. Have you already been in bad coverage areas?

It will regain signal. For example yesterday - I was in underground parking lot and signal was very poor to none, but somehow I've got the incoming call when moving to other spot.
Maybe it's firmware related. I've updated manually to amh2 version through odin. Mine new csc is ser - Russia
Wysłane z mojego GT-I9192

Anyone else that has not experienced this problems?

I would like to know this also, I'm considering buying it solely because of the "Dual Sim" but I keep reading lots of people complaining about the signal issues.

I dont have any problems with my I9192 been in my hands for 2 months by now the network problem you describe it's very rare just couple of times since I've been using it but I've turn on and off airplane mode
for me it's a really good phone
Sent from my GT-I9192 using Tapatalk 4

Same problem
I also have the duos version. Once the signal is lost/falls in the dead spot region, it doesn't come back a automatically. Fed up with this.. after buying such a high end phone, restarting all the time to get network! What is the use of fast processor and all stuff if we can't make a phone call with it? And after reading the comments on the below page, it is clear that this is a known issue of the model:
gsmarena.com/samsung_i9190_galaxy_s4_mini-reviews-5375.php
Any solution for this? The handset has turned out to be useless.

I have not had a problem like this with mine, it works perfect. I live in a bad signal area and if I go down stairs in my house the phone will lose the signal , when I go back up stairs the phone always regains the signal with no problems.
I can't fault this phone, it's ten times better than my last one, HTC Desire V

fburgos said:
I dont have any problems with my I9192 been in my hands for 2 months by now the network problem you describe it's very rare just couple of times since I've been using it but I've turn on and off airplane mode
for me it's a really good phone
Sent from my GT-I9192 using Tapatalk 4
Click to expand...
Click to collapse
Thanks,
Only the fact that you mentioned you have to do airplane mode 2 times is just severe enough, because in a phone with this price range that's a problem that should NEVER occur, and you can be the lucky guy that just has good coverage signal all of the time.
I came to the conclusion that it happens with much moore models than the ones that not happen.
I'm going to order the phone even with this feedback hoping that i have a flash of luck and my phone doesn't have the problems, because i've been waiting months for a dual sim phone with top performance and this seems to be the ideal phone to me.
I will post my experience here, if anything goes wrong i will try to sell it.

grajeshg said:
I also have the duos version. Once the signal is lost/falls in the dead spot region, it doesn't come back a automatically. Fed up with this.. after buying such a high end phone, restarting all the time to get network! What is the use of fast processor and all stuff if we can't make a phone call with it? And after reading the comments on the below page, it is clear that this is a known issue of the model:
gsmarena.com/samsung_i9190_galaxy_s4_mini-reviews-5375.php
Any solution for this? The handset has turned out to be useless.
Click to expand...
Click to collapse
Yes, i totally agree with you.
I don't know how a brand like Samsung brings to the market a phone in this price range with these problems. And worst, dont't give a solution to them. Did you try to contact Samsung or use the warranty with them?

Same Issue with Samsung GT-I9192
Hi All,
I am facing the same issue with my Samsung GT-I9192, which I purchased on 1st Sep.
I am using 2 simcards, one being Vodafone and the other Idea, India region.
Surprisingly the issue is only with Vodafone, where the signal after dropping (very frequently) does not refresh.
In case of Idea simcard, the signal refresh is working fine.
I am not able to understand if the problem is with the service provider, sim card, hardware or the software.
I used my vodafone simcard with Galaxy Core (another dual sim phones), and they seem to work fine,
which gets me all the more confused.
The only difference that I notice is in the Mobile Network Type.
Its EDGE:2 for Vodafone and UMTS:3 for Idea, wonder if this has got anything to do with the network issues.
I did the default available 2 firmware upgrades since purchase, they seem to have worsened the problems.
Let me know if you are facing the same issue, with the same service provider.
Need to keep a close watch on the solution, as it seems to be affecting more people than expected, surprisingly couldn't find any issues a month back during the time of purchase....
Regards,
Varun

varun_b said:
Hi All,
I am facing the same issue with my Samsung GT-I9192, which I purchased on 1st Sep.
I am using 2 simcards, one being Vodafone and the other Idea, India region.
Surprisingly the issue is only with Vodafone, where the signal after dropping (very frequently) does not refresh.
In case of Idea simcard, the signal refresh is working fine.
I am not able to understand if the problem is with the service provider, sim card, hardware or the software.
I used my vodafone simcard with Galaxy Core (another dual sim phones), and they seem to work fine,
which gets me all the more confused.
The only difference that I notice is in the Mobile Network Type.
Its EDGE:2 for Vodafone and UMTS:3 for Idea, wonder if this has got anything to do with the network issues.
I did the default available 2 firmware upgrades since purchase, they seem to have worsened the problems.
Let me know if you are facing the same issue, with the same service provider.
Need to keep a close watch on the solution, as it seems to be affecting more people than expected, surprisingly couldn't find any issues a month back during the time of purchase....
Regards,
Varun
Click to expand...
Click to collapse
In my case, it's Vodafone also, but is in Western Europe.
My concern is that i have exactily the same problem in my present phone (Sony Tipo Dual) and it's the main reason (along side the big improve of speed and etc) for buying this phone. At the present, people call to me and they say that phone answers occupied (no network signal) and i look to the phone and it shows top signal strenght. I'm beginning to think that dual sim phones with android have some limitations (maybe antenna limitations).

ricjps said:
Hello,
I appeal to all the users that have samsung galaxy s4 mini duos (i9192) to give me a honest opinion on their experience usage about this issue
I want to buy the phone because i have 2 sims, work and home and need both always on but i've been read that this phone has major problems with network signal such as:
"Poor network performance. I'm forced to restart 4 to 5 times per day to regain the network access. I checked from my service providers, no issues on their part. Dual Sim a failure. Apart from network issues, the design, ram performance are average. I'll recommend not to buy this instrument unless the dual-sim network problem is rectified."
Like this, there are many more in samsung phone forum.
Anyone can give me their opinion?
Click to expand...
Click to collapse
I have smiliar problem. I have contacted samsung service center they assured to replace antenna but after 10 days antenna not yet came. So waiting for it. Is this problem is due to hardware or software i am not sure.
---------- Post added at 09:34 PM ---------- Previous post was at 09:29 PM ----------
ricjps said:
In my case, it's Vodafone also, but is in Western Europe.
My concern is that i have exactily the same problem in my present phone (Sony Tipo Dual) and it's the main reason (along side the big improve of speed and etc) for buying this phone. At the present, people call to me and they say that phone answers occupied (no network signal) and i look to the phone and it shows top signal strenght. I'm beginning to think that dual sim phones with android have some limitations (maybe antenna limitations).
Click to expand...
Click to collapse
In my case S4 mini network refresh is not working for secondary sim (aircel India) and working fine for primary sim Tata docomo. I buyed this mobile as it has 1.5 gb RAM with dual sim instead of Nexus 4.

ricjps said:
Thanks,
Only the fact that you mentioned you have to do airplane mode 2 times is just severe enough, because in a phone with this price range that's a problem that should NEVER occur, and you can be the lucky guy that just has good coverage signal all of the time.
I came to the conclusion that it happens with much moore models than the ones that not happen.
I'm going to order the phone even with this feedback hoping that i have a flash of luck and my phone doesn't have the problems, because i've been waiting months for a dual sim phone with top performance and this seems to be the ideal phone to me.
I will post my experience here, if anything goes wrong i will try to sell it.
Click to expand...
Click to collapse
thats true it should never occur, i think its implementation problem, android its not mean to be for dual sim phones the solution for dual sim on android its a samsung workarround, it should not be buggy but has some problems it does not make the phone unusable for me, I don't get coverage all the time, I travel from city to city and get poor coverage all the way so i think its not a big issue since it happen just a few times.

sriram.yenchrla said:
I have smiliar problem. I have contacted samsung service center they assured to replace antenna but after 10 days antenna not yet came. So waiting for it. Is this problem is due to hardware or software i am not sure.
---------- Post added at 09:34 PM ---------- Previous post was at 09:29 PM ----------
In my case S4 mini network refresh is not working for secondary sim (aircel India) and working fine for primary sim Tata docomo. I buyed this mobile as it has 1.5 gb RAM with dual sim instead of Nexus 4.
Click to expand...
Click to collapse
Hi Sriram,
My problem is very similar, Vodafone on either sim slots gives network problems, and Idea on either sim slots works fine. That makes me think that the problem must be hardware / software related to Network type. Its EDGE2 for vodafone and GPRS1 for Idea. What is the network type of your sim cards?

Phone defect.. Not related to Sim card
ricjps said:
Yes, i totally agree with you.
I don't know how a brand like Samsung brings to the market a phone in this price range with these problems. And worst, dont't give a solution to them. Did you try to contact Samsung or use the warranty with them?
Click to expand...
Click to collapse
Started with an email to CEO, Samsung India. I shall update as I get the reply.
varun_b said:
....I am using 2 simcards, one being Vodafone and the other Idea, India region.
Surprisingly the issue is only with Vodafone, where the signal after dropping (very frequently) does not refresh.
In case of Idea simcard, the signal refresh is working fine.
I am not able to understand if the problem is with the service provider, sim card, hardware or the software.
Regards,
Varun
Click to expand...
Click to collapse
..
..
varun_b said:
Hi Sriram,
My problem is very similar, Vodafone on either sim slots gives network problems, and Idea on either sim slots works fine. That makes me think that the problem must be hardware / software related to Network type. Its EDGE2 for vodafone and GPRS1 for Idea
Click to expand...
Click to collapse
I use idea in the first slot and BSNL in the second slot. The trouble occurs with BOTH SIM. Earlier I used idea -Vodafone pair, the problem was still there. I live in am area where all operators have weak/varying coverage. Airtel and aircel have already been reported as showing same problem. All the users are affected with this issue, so it is clear that this has nothing to do with the operator, it is a fault of the phone either hardware or software. I think you have idea Sim working fine only means idea network is better in your area and may not need frequent network cell changeover. (?) And another fact we can see from the reports is, that, almost ALL THE COMPLAINTS have been reported from INDIA where the model released is the duos.

S4 Mini Network issues.
I too have a S4 Mini for less than a month and I am also facing network issues. One thing to notice is that the sim with internet doesn't have issues. Irrespective of which slot it is in. Currently I have Vodafone IN on Sim 1 and Airtel on 2 (with 3G). Airtel works fine and Voda has issues.
I did speak to Samsung care, they were very nice, however the problem wasn't solved, I have been adviced to go to Samsung service center and get the S/w reimaged.
I still haven't done that, however what I did was to reset the phone and while I was browsing on the play store I got a software called "Where is my Signal" by Grey Boy. For some reason I feel it is working fine now. I have not had any issue from last evening, baring one time when I was on a long conf call for around 150 mins today. else it has been working fine and receiving calls on both sims too.
I had used this software to refresh the network once, it has helped me, not sure if this is going to sustain but for now it is good.
If some one else also has this software installed and is finding this to solve the issues kindly post the same on the forum and may be helpful.
Will repost tomorrow again with the status.
BTW I agree to many opinions in this thread that Samsung should have done some testing or atleast after many of these issues coming up needed to provide a patch upgrade.
Regards
HB

Will factory reset work?
Hbalisavira said:
.....however what I did was to reset the phone and while I was browsing on the play store I got a software called "Where is my Signal" by Grey Boy.
Regards
HB
Click to expand...
Click to collapse
I had tried three apps of that kind: where is my signal, network booster(marcstealth), and network refresher lite. None of them could overcome the strange problem of this phone though at first they seemed to be working. Another question is, how do we know when to refresh network? If we know the signal is lost, we can restart or do something like that. Then there is one more issue: sometimes it shows good/full signal strength, but when try to make a call, will realize that it was false! I made to run the network booster app run when signal is low, using tasker app -but we are not supposed to live such a life using this celebrated costly handset.
But one thing in your post is of much importance. DID THAT RESET WORK? You haven't said much about that.
Regards,
Rajesh

grajeshg said:
I had tried three apps of that kind: where is my signal, network booster(marcstealth), and network refresher lite. None of them could overcome the strange problem of this phone though at first they seemed to be working. Another question is, how do we know when to refresh network? If we know the signal is lost, we can restart or do something like that. Then there is one more issue: sometimes it shows good/full signal strength, but when try to make a call, will realize that it was false! I made to run the network booster app run when signal is low, using tasker app -but we are not supposed to live such a life using this celebrated costly handset.
But one thing in your post is of much importance. DID THAT RESET WORK? You haven't said much about that.
Regards,
Rajesh
Click to expand...
Click to collapse
The reason for reset was to ensure that none of the softwares I had installed were causing the issue. The reset didn't change much compared to the way it was earlier.
Some observations of when the problem actually happens (again this is my observation and doesn't need to be the same in your case)
> When I am on a long incoming call on the sim which has Internet.
> Noticed that short calls don't impact the network.
> If there is a call drop imm after you receive a call.
I am planning to get the phone firmware re-imaged from the service center however I will need atleast 10 more days to do it as I am currently in a different city and I am not carrying the invoice copy.
BTW Rajesh, did u get any response from the CEOs office?
Regards
HB

Strange 4G behavior (G960F). Any ideas?

Hello.
Sorry if this comes from nowhere, but I read a lot here, but post little to none, so I'm doing this because I truly don't know what to do or what is the problem with my device.
The thing is that my device (Galaxy S9 SM-G960F) has a really weird behavior regarding LTE mode: it has decent download speed (around 30-40-ish Mbps in every operator I've tried it), but it has really poor upload speeds (around 0.2-0.5 Mbps in those same operators). It happens in every operator in my country, and in every band (B2, B4, B7), EXCEPT for B28 (APT 700 Mhz). On that band, my phone behaves normally (20-30-ish Mbps in download and 10-14 Mbps in upload). 3G, on the other hand, works extremely well in every operator, giving me speeds around 14 Mbps download and 5-8 Mbps upload.
I've tried everything: downgrading/upgrading the modem firmware, flashing official firmware, changing the CSC to the one that has most bands compatible with my country (Chile), flashing Alexandr firmware, using different operators, etc and the problem persists. I'm beginning to think it has something to do at hardware level.
Does any of you has had these kind of problems before? How did you solve it? If this really is a weird case, does it mean it's probably at hardware level? Is it the modem? Amplifiers? Antennas?
Thanks in advance.

I think its just a case of signal fluctuations or antenna switching in the wrong times, i guess its gonna be like that.

May well be hardware.
Not necessarily the antenna or mobo although it's possible.
On the 10+ if the C port PCB is from the wrong 10+ variant it will have no internet or mobile connection. The parts look identical except for P/N.

Well, aren't you full of information.
But yes, he is correct. But I wouldn't like that to be true lest he has to give it in for repair.
Money is really rare during COVID.

blackhawk said:
May well be hardware.
Not necessarily the antenna or mobo although it's possible.
On the 10+ if the C port PCB is from the wrong 10+ variant it will have no internet or mobile connection. The parts look identical except for P/N.
Click to expand...
Click to collapse
It could be. I bought this as a refurbished phone and I don't know what parts they used to make it. To be sure though, I ordered a connector PCB from aliexpress (they were cheap...like US$9) that has the antenna amplifier and stuff just to be sure its not the motherboard (which costs a lot more than 9 bucks).
I'll be updating if I have any news regarding my issue. Does any of you have experienced something similar?

Well, my iPhone keeps fluctuating from 1 bar to 2 bars to 3 bars sometimes.
So who knows? ¯\_(ツ)_/¯

cybermiguel said:
It could be. I bought this as a refurbished phone and I don't know what parts they used to make it. To be sure though, I ordered a connector PCB from aliexpress (they were cheap...like US$9) that has the antenna amplifier and stuff just to be sure its not the motherboard (which costs a lot more than 9 bucks).
I'll be updating if I have any news regarding my issue. Does any of you have experienced something similar?
Click to expand...
Click to collapse
Just what I saw on my 10+ when the wrong variant killed the mobile connection.
It charged A-OK though
Hopefully that will get it... doesn't hurt to have a parts queen for spare parts if you really like that model.

blackhawk said:
Just what I saw on my 10+ when the wrong variant killed the mobile connection.
It charged A-OK though
Hopefully that will get it... doesn't hurt to have a parts queen for spare parts if you really like that model.
Click to expand...
Click to collapse
lol

Update: opened my phone, checked everything, even the amplifier board (the one that also has the charging flex) and couldn't see any damage. I'm about to throw the towel on this one and send it to a technician, though I highly doubt it will have any spare part, since this is a G960F and in my country, the model sold is the G9600.
Last time I make a mistake this big on Aliexpress. lol.