Question 02 Physical SIM Signal Dropping - Google Pixel 6 Pro

I have my Vodafone esim in my 6pro and the signal is fine on that no problems at all 4/5g pickup is good etc.
But my physical 02 work SIM (not on a 5g plan) - the signal sometimes disappears to the point it says no service and won't come back until I eventually reboot.
Any one else with this issue? Happens even in decent signal areas where I am used to using 02 a lot. And indeed post reboot the signal is good. Never has issues with the same combination of esim/physical SIM on my P5.
My Vodafone esim doesn't have this problem seemingly.

It could be a dodgy connection or the SIM was damaged on moving from one device to another? If it stops responding or crashes (SIM cards have a little CPU and operating system in them) then the phone will drop the mobile connection.
I think all you can do is try cleaning the contacts with something (Isopropyl is a good thing to use) and seeing if that improves things, otherwise try a new SIM.

PhilipL2021 said:
It could be a dodgy connection or the SIM was damaged on moving from one device to another? If it stops responding or crashes (SIM cards have a little CPU and operating system in them) then the phone will drop the mobile connection.
I think all you can do is try cleaning the contacts with something (Isopropyl is a good thing to use) and seeing if that improves things, otherwise try a new SIM.
Click to expand...
Click to collapse
I'll try getting a new SIM. It hasn't happened on my previous phone with same SIM. But as you say might have damaged SIM during swap.
It's weird it does work for a bit though. But seemingly if I lose signal it doesn't reconnect.
My voda esim behaves as you'd expect.
Someone I know on giff gaf (also 02 network) is having exactly the same issue. Wonder if it's a network thing....
Hope my phone's not knackard

Related

[Q] Not your everyday "Your SIM card does not allow..." problem

Hey guys!
So, I can clearly see this "Your SIM card does not allow a connection to this network" problem is quite common around here, so here we go.
After one year of normal use, I got my problem one day ago, no connection whatsoever since then.
Tried shutting it down, removing the battery and switching back on after 20 minutes.
Tried my sim card in another phone - Works fine.
Tried another sim card, from the same operator, in my phone - Works fine (WTF)
I then called my operator (it's a Brazilian operator so no matter mentioning it now) and of course, no solution. Payment is fine, everything normal.
So I wen't to my operator store and replaced the sim and... Still doesn't work!
I then borrowed a sim from another operator and... Nothing! No signal!
And just now, I realized that, when I change to "GSM Only" it works! The thing is I have an unlimited 3G plan, and use it a lot, this is not a solution for me.
I've always used my phone on "WCDMA Only" or "WCDMA Preffered", but when I switch to those, or to anything other than "GSM Only", it dies, no signal, even with GSM Auto...
I tried hard resetting, nothing helps here... I have no idea what to do next.
When on WCDMA Only:
Signal Strength: -71 dBm 21 asu
GSM Service: Emergency calls only
GPRS Service: Disconnected
Network Type : unknown
I bought the Phone brand new on eBay (or rather a brazilian version called Mercado Livre) and it's clearly from the UK (i can see from its plugs) but it's unbranded and unrooted, but unlocked.
Also. I heard this may happen with stolen phones, blacklisted IMEI's... How can I figure this out? And how does that explain the fact it works under GSM only?
Just searched my IMEI on different databases, doesn't seem to be stolen.
This is swelling my brain to the point I think it's gonna blow.
My Phone Sim Card (TIM Network) - Works on any phone, and works in my tablet, but not on my DHD.
My Tablet Sim Card (VIVO Network) - Works on my phone, and work on my tablet.
My friend's Sim Card (TIM Network) - Works on his and my phone fine.
So my DHD will work with ANY but my sim (which was replaced for a brand new today, with the same line)
And my sim will work with ANY device but my phone.
Oh my head....
Turn Aeroplane mode on, then off continuously until you get a 3G signal. If you still don't get connected, take your battery out, wait 15 minutes, put battery back in and it should connect.
If neither work then I know of nothing more you can do.
Sent from my Desire HD using xda premium
If other SIM card works fine and only have issue on 3g, then it must be an operator side error. Go in a TIM store and prove with different SIM cards, and Phone. They have to do someting.

HTC One X - Terrible Terrible signal reception

I'm absolutely baffled that I'm the only one apparently suffering from this.
At first it was ok, now, no matter what ROM or base, the signal quality is terrible.
Where my HTC Sensation was getting full bars, or constant HSDPA (I rarely ever seen 3G), this One X is either getting 3G, G or E, which means no web pages will load or anything, very terrible.
It's making me consider "downgrading to upgrade", because the only time I can browse the net happily is either very close to Wi-Fi source, or where HSDPA is very strong, so I will just about get HSDPA then.
Other people must be suffering from this?????
The only plus with the One X is in my village I find it easier to get 1-2 bars and a bit of G.
Thanks.
Talk Mobile??? What's their coverage like?
Do you know what your Radio is? Try flashing a few different radio's to see if that helps?
Talk Mobile is on the Vodaphone network.
I've never attempted to flash a different radio, in fact I've never even seen a list of radios, as far as I knew they were included in the actual ROMs now.
willhub said:
Talk Mobile is on the Vodaphone network.
Click to expand...
Click to collapse
I didn't know that
willhub said:
I've never attempted to flash a different radio, in fact I've never even seen a list of radios, as far as I knew they were included in the actual ROMs now.
Click to expand...
Click to collapse
Afaik some of the Devs have access to different radio's, Try asking Mike1986 from ARHD or Football to see if they can help you.
I'm sure that I've seen some threads about flashing different radios to fix signal problems before, I think to see Mike1986 posting about it when I used to frequent the HTC Sensation's Android Development threads.
Hi
willhub said:
I'm absolutely baffled that I'm the only one apparently suffering from this.
At first it was ok, now, no matter what ROM or base, the signal quality is terrible.
Where my HTC Sensation was getting full bars, or constant HSDPA (I rarely ever seen 3G), this One X is either getting 3G, G or E, which means no web pages will load or anything, very terrible.
It's making me consider "downgrading to upgrade", because the only time I can browse the net happily is either very close to Wi-Fi source, or where HSDPA is very strong, so I will just about get HSDPA then.
Other people must be suffering from this?????
The only plus with the One X is in my village I find it easier to get 1-2 bars and a bit of G.
Thanks.
Click to expand...
Click to collapse
It is probably a hardware fault with the phone. If your HTC Sensation is getting a good signal with the same SIM/network provider, and your HTC One X isn't, then I suspect a fault, perhaps internal antenna connection issues that have plagued Wi-Fi. Try gently squeezing the phone with your thumb over the home key and fingers underneath and see if reception improves.
There is also an internal cable that may not have been attached correctly in the phone to the antenna, either way it is back for a repair.
I can't see way a software would be to blame.
Regards
Phil
I have the same issue. I will use my warranty
Castellano2 said:
I have the same issue. I will use my warranty
Click to expand...
Click to collapse
Some old Sim card have problems
If you have a old 3 or 5 Sim card its the problem , they are different and have have bad reception with new phones, with MicroSIM slot
i have to change my SIM card at vodafone and ask for a new one ...
Because my sim card is old and i cut it to micro sim but have bad signal
with new microSim card the problem as been solved
masrterk said:
Some old Sim card have problems
If you have a old 3 or 5 Sim card its the problem , they are different and have have bad reception with new phones, with MicroSIM slot
i have to change my SIM card at vodafone and ask for a new one ...
Because my sim card is old and i cut it to micro sim but have bad signal
with new microSim card the problem as been solved
Click to expand...
Click to collapse
Why a old sim product a bad signal ??
How strange !!!
htc 51 said:
Why a old sim product a bad signal ??
How strange !!!
Click to expand...
Click to collapse
vodafone replace my old SIM card for a new one
and the reception problem has been solved
Because the micro chip of old sim cards and different and they work if cutted for micro sim but very bad
old Sim cards are not ready for micro sim phones
New micro sim cards have a smaller "chip" and the y have a better 3G reception
problem solved
masrterk said:
vodafone replace my old SIM card for a new one
and the reception problem has been solved
Because the micro chip of old sim cards and different and they work if cutted for micro sim but very bad
old Sim cards are not ready for micro sim phones
New micro sim cards have a smaller "chip" and the y have a better 3G reception
problem solved
Click to expand...
Click to collapse
I'm using the micro SIM that was provided.
The signal reception bars are never really different, it's just the phones inability to hold a decent HSDPA connection, constantly flicking from 3G, G and E, so I'm loading a website on HSDPA, as soon as it flicks to 3G, loading stops because the connection is far too slow.
I do have the Wi-Fi issue, if the signal is not full on, so I'm a bit away from the router, the wireless is just cutting out all the time, was not like this with HTC Sensation.
I don't really know about getting it sent in for repair I won't have a phone then!
If you get 3G, then you get H, they are the same technology.
What you will find, however, is that the One X supports fast dormancy, so the data connection will sit on 3G until H is needed, then switch, then drop back to 3G when it's not.
you guys tried flashing different radios?
Is it fast dormancy causing the problems then? How can I disable it?
I can't flash different radios as it's very hard to find different radios for the One X
Apparently you have to to change the build.prop to disable it:
ro.ril.fast.dormancy.rule=0
Hi
masrterk said:
vodafone replace my old SIM card for a new one
and the reception problem has been solved
Because the micro chip of old sim cards and different and they work if cutted for micro sim but very bad
old Sim cards are not ready for micro sim phones
New micro sim cards have a smaller "chip" and the y have a better 3G reception
problem solved
Click to expand...
Click to collapse
The SIM card doesn't control reception, that is a myth. The SIM card is just like the chip in your credit card, it holds a number and some data to identify you to the mobile phone network.
The problems a self cut or old SIM my cause is that it doesn't connect very well to the phone, this means your phone thinks the SIM card has been removed and gives you "No Service" or Emergency only calls.
The only other time the SIM card may make you think it is affecting reception and giving you a lower signal is if you are roaming and it you don't have an up to date roaming list, usually though this is updated over the air anyway, a new SIM card may allow you to roam onto nearer cells so you see a better signal.
A bad SIM will not knock a couple of a bars off your reception, in the same way a bad credit card doesn't give you less credit limit.
Regards
Phil
Rusty! said:
Apparently you have to to change the build.prop to disable it:
ro.ril.fast.dormancy.rule=0
Click to expand...
Click to collapse
How do I do this?
http://bit.ly/O4EL9H
Sent from HTC One X
Download and flash another radio from here : http://forum.xda-developers.com/showthread.php?t=1689679
Try getting radio from ur region or ruu..
Next get this app : https://play.google.com/store/apps/details?id=com.sibbor.getril
Get a matching ril to radio u installed from.this app..download & install
See if this makes the difference..
Sent from my HTC One X using Tapatalk 2
try OpenSignalMaps from the market to see what's really going on (click on 'map' for example will show what cell you're connected to and signal strength etc)
I tried that OpenSignalMaps, I notice how my phone is connecting to some nearby towers, but I live near a place called Selby, and it's connecting to masts in Leeds????

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

calls are disconnected after few minutes

hi all,
stock 551ML no root, the calls running on SIM1 (4G) gets disconnected after 5/10 minutes. i suddenly see the radio bars disappearing, i can't hear anymore the called party, and then the call drops. Tried with 2 different carriers on SIM1. The phone is always enabled with 2 SIM's, but on the second one (whatever the carrier is) there's no such problem. I think this phone has large issues when dealing with 2G/3G/4G swap, signal quality on SIM1 is terrible (tested in comparison with wife's iphone6+ with same carrier same location) and often i lose signal on SIM1. Definitely not a work phone in this way. any idea? can a full reset improve the situation?
Please ensure firmware is updated to latest version. Next please try performing a hardware reset including cache wipe partition. http://www.asus.com/us/support/FAQ/1011956/
If the problem continues then it may be a hardware issue with the SIM slot and will require RMA service.
Sincerely
ASUS_USA
[email protected]
after few weeks i can say more about this issue, on SIM1 the 4G slot. (stock phone updated and wiped completely)
1) carrier signal reception has now slightly improved with .59 and .63 update
2) problems on switching from 4G to 3G still there, when 4G signal is poor the phone is not able to detect it, and tries and tries and tries sending data to nowhere. after a minute or so, switch to 3G happens and i got network connectivity again
3) comparison with iphone6+, samsungS5 and sonyZ3 (same network, same location) is still terrible, while i got no network, iphone does and loads the pages, slowly but it loads the full page. i think here is the price difference between the two -> antenna, radio, optimized software for any signal condition
4) under bad (bad from a 551ML point of view) signal conditions the battery drains a lot more faster, and that's fine but at least i would like to use the phone, to receive calls, messages, whatsapp and so on.
5) during a call on SIM1, it still happens that signal disappear and i the call is dropped, less frequently than i had before .59 update, but still happens.
6) i'm calling using SIM2 BTW, SIM2 on 2G has no issues.
i will be soon able to compare with honor7 (it should have a very good optimization on the radio part) and let you know.
bye
I am on AT&T in the US and having a similar problem and hoping someone can help except for me it is SIM 2 that is the problem and for me it is at home. Last night I was on a call that kept dropping, and it was not a good thing at all and I had to end the call. I pretty much cannot sustain SIM 2 calls in my house but SIM 2 elsewhere is okay; calls on SIM 1 are perfectly fine and with my previous phones (Note 3, iPhone, Windows Lumia 1520) no reception problem history ever at all. So this clearly is a device issue and not an AT&T issue as I get good coverage in my house. I had two phones up until a month ago when I opted to consolidate by getting the ZF2.SIM1 is perfectly fine most of the time-I've never dropped a call although a couple times I have to say I've not heard as well for a moment as I could, so I question if my house and the Zenfone2 are a good match, although that is really a weird thing as I live in a major suburban metro area that is not a coverage problem in any way shape or form with any dead spot problems, so I am wondering if something is wrong with my hardware and I need to exchange my phone. I'm going to have to pop my SIM 1 back into my Note 3 in the interim and forward calls on my second line in the interim in the meantime if that's the case . (my windows phone takes a nano SIM) and send my ZF2 back for an exchange Should I do a hard reset? Why would my house be a problem? It's not a dead spot area or remote or anything like that. I really like this phone already got a new SIM 2 card once before when I had problems at first but it seemed to be better until I then tried to make a c all yesterday and it wouldn't work.Could my phone be defective? Hard reset?? My software is up to date.
Sent from my K010 using XDA Free mobile app
After latest updates and various test i can say that signal coverage and battery life has been improved so much. Thanks a lot asus, it's a pleasure to work with this phone now. Keep doing the same good job!
Federic0 said:
After latest updates and various test i can say that signal coverage and battery life has been improved so much. Thanks a lot asus, it's a pleasure to work with this phone now. Keep doing the same good job!
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Glad to hear things worked out for you. My situation didn't work out. I just returned the Zenfone yesterday. I had gotten the replacement phone through ASUS, still replaced yet another SIM card, and the problem with my SIM 2 persisted and got even worse. For me, the SIM slot being 2G did turn out to be the destructive feature of the device. My area is too upgraded for it apparently. You're the only other person I've come across that has referenced SIM 2 usage to me, so I get the sense that most people are just using the ZF2 as a single SIM and don't have a second phone line or data line. Therefore I can understand people being happy overall as it's a decent device for a single SIM user. You are lucky that your SIM 2 coverage is good everywhere. Mine was good in some areas but certainly not in and around my house and there my SIM 2 was unable to sustain phone calls. I didn't care about data-I only wanted phone calls but I couldn't do calls even.I had no cellular connection and my SIM 2 would X out and drop off all the time.
I never had a problem with SIM 1. I always got calls just fine and I found that ASUS always provided updates and I noticed changes in battery life. I was pleased in every other regard but the very purpose that I bought the phone for -to be able to get calls to both my phone lines. I do think ASUS dropped the ball with the 2G slot and need to make their next model with both slots supporting LTE. They me might get me back as a customer if they do.
Sent from my K010 using XDA Free mobile app
It looks like I am not the only one who has the sim 2 signal issue. My phone has this issue from day one, the signal of sim 2 just comes and goes all the time. Software update doesn't help at all. I've also tried putting a new sim card, but still have the same problem. I think this is a hardware issue.

Dual-Sim issue

I got this rather strange problem/issue with my G5. The 2nd SIM Slot it seems is not that consistent when it comes to network signal. I started noticing this when I put it my Roaming SIM on the 2nd slot, and there are times that it will randomly lose/gain signal strength and the network will totally disconnect. Then I have to again manually configure the network settings. That's when I decided to swap the sims I'm using. The Roaming sim works flawlessly on the 1st slot, while the local sim on the 2nd slot does the same, but so far haven't disconnected from the network, or at least once I noticed it totally lost signal for a second before going back to normal.
Is this normal for the Moto G5? This is something I can't argue with the store from where I got it from since the SIM is accepted and read by the 2nd SIM Tray.
The Moto G5 with Motorola firmware is currently being mis-sold, it is not really dual-SIM as you expect, the second SIM is more an internal storage location - you can switch to it but not use both properly at the same time. When connected with 4g to the first SIM the second is set to the obsolete and not available in many areas 2g. I have found that disabling the first sim is not good enough to allow the second to use 4g, you also have to set the second sim as the primary data SIM. The Moto app suggests you can choose which SIM for data or individual calls, guess it might work if your second SIM network is 2g only?According to report from Australia Motorola are aware of the issue and are looking into it - no 2g signal at all in areas over there. Elsewhere you may have patchy 2g signal and see the old data connections E or H popping up. Apparently older Moto G4 etc can use 3g at same time in second slot, not sure if the G5 issue is fixable by firmware or is some crazy hardware design fault. Don't hold your breath waiting for updates - Android 7.0 with January security update is latest here - while phone still under warranty!

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