I've experienced an issue with the signal constantly dropping and gaining when using a gsm sim card.
Restarting the phone doesn't help. triggering airplane mode doesn't help either.
First time i put t-mobile sim card in, it works for a few hours and this happens since then. sometimes i try putting in my friends' sim cards in and it works for a few minutes.might this be a software problem?
this is a short video of the issue in case you can't imagine what I'm talking about youtu.be/nOw3jZyiNBA
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I purchased an unlocked I9305T a few days ago to use on Telstra and am having all sorts of reception problems even though we're fairly close to a tower. My S2 will usually get -80 dbm and above whereas the S3 was often sitting at -100 or less. Sometimes mobile data works and other times it drops out constantly or won't connect at all.
Anyway I was ready to return the phone today when I noticed that without a sim inserted, it's getting better 3G reception than the S2. That would rule out any antenna or modem problems wouldn't it? Does this mean the sim card slot might be faulty? I doubt it's the sim card itself as I've got it in the S2 currently and it's working fine.
EDIT: Please excuse the dumb stuff above. Don't know why I thought signal strength meant anything without a sim. I went and got a brand new sim and it's now working perfectly.
I have been using my Htc one from the past 2 years using the same sim card. Since i stay in India, the phone goes into roaming mode when you travel across states. So 10 days ago, i travelled to another state and my phone entered into roaming mode from then my phone cannot be connected to the network. I am unable to use the cellular services. Sometimes my phone works fine but the next minute, i loose the signal again. It is not in a stable mode, it keeps loosing and gaining the connection. Neither can i call nor i can text. If the phone gains signal, it happens only for a minute or two after that, it looses the network again.
My sim card is fine since i checked it in other phones. So the problem is with the phone or the sim tray.
What should i do?
jaipreet said:
I have been using my Htc one from the past 2 years using the same sim card. Since i stay in India, the phone goes into roaming mode when you travel across states. So 10 days ago, i travelled to another state and my phone entered into roaming mode from then my phone cannot be connected to the network. I am unable to use the cellular services. Sometimes my phone works fine but the next minute, i loose the signal again. It is not in a stable mode, it keeps loosing and gaining the connection. Neither can i call nor i can text. If the phone gains signal, it happens only for a minute or two after that, it looses the network again.
My sim card is fine since i checked it in other phones. So the problem is with the phone or the sim tray.
What should i do?
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Seems strange it happened after / during traveling
I have herd of others putting a piece of tape on the back of the sim to make it a little thicker. be careful doing this though the sim could get stuck in the phone permanently
Losing GSM signal very often
Hello everyone,
Since I updated my phone to B815 version I have noticed that my P7 recently very often loses gsm network (like no sim card is inserted), once a day. First I thought maybe sim card doesn't fit well and get the new one from the operator. But still the same issue.
In that case, first I enter airplane mode and then turn the airplane mode off. But it is very annoying. Does anyone else have the same issue? Any solution? My P7 is one year old and never had this issues until last month.
Also, when the display is turned off, the phone went into "sleep" mode which result that I do not receive viber messages instantly but only when I enter viber application. That is the issue from the beginning, no matter on software version installed.
Thanks for reply.
Hello. About a 4 months ago i have bought from eBay a note 5 at&t version. I live in Greece and my network operator is WIND GR. The phone works fine but from time to time i get an emergency calls only message. And i can't get and do a phone call. If i restart the phone everything goes to normal. Sometimes it goes on and off by itself (the problem).
Have been anyone experiencing the same issue? If the phone is incompatible with my network operator should it not work at all?
Did you tried to change the sim card? Maybe issue is from sim or from sim slot
johnny.goldy said:
Did you tried to change the sim card? Maybe issue is from sim or from sim slot
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My sim is new. When i purchased the phone i have changed my old sim with a new sim 4g compatible.
It happened again. And i am missing calls like this. I will smash it with a hammer
Go to settings, backup and reset, then reset only network settings, see if any better signal
johnny.goldy said:
Go to settings, backup and reset, then reset only network settings, see if any better signal
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Done that right now. Tomorrow i will get a new sim card and i will post if anything gets better. Thanks for the help.
Update of the situation. I have changed sim card 2 times. It still happening. My phone runs at nougat now and the problem still appears as before at 5 and 6 Android version. I currently gonna change service provider that has better and stronger signal. From what i have discovered. When the phone looses signal due too poor service provider signal sometimes it can't register to network by itself. If i enable airplane mode and then turn it off it comes back. Any clue? If it's hardware issue what can i change?
Should i have at the mobile networks auto detect or manual and my carrier?
Hi guys, I have an issue with 4G after the last dec update. In 4G/3G/2G auto connect mode, usually the receiving data arrow ( v arrow below the 4G symbol in notification bar) gone missing and thus the connection got lost. Only transmitting arrow is visible (the ^ one). I have to wait for some minutes or turn to flight mode and back to get my data connection back.
In the beginning I don't really sure this issue is caused by the latest update, but after I tried nearly everything, including factory reset which is doesn't help, I think that the update is the problem.
I have tried my sim on another phone and it worked normally. I have tried another sim on my note 8 and it got the same problem.
Oh and this is only a 4G issue. My 3G works normally. And before the update, I never experienced this kind of problem.
Two of my friends got the same note 8 and one of them is also using the same carrier as me, but neither of them experiencing this issue.
Anyone can help?
Thanks in advance
I had this issue too, it seems 4g connection only got the problem...,
Problem solved, they replace my device
I have the same problem but seems like in a different way, when I got the phone first time I contacted my service provider to activate the 4G service cause it was inactive on my line due to provider's issues, anyway the phone worked on 4G for only 2 days, after that it kept working on 3G, I contacted the service provider many times but they have no issues with my SIM or handset.
I still don't know what is the problem, is it a hardware malfunction? Is it an installed app? Is it a Samsung Update? I don't know!
have tried getting a replacement sim card, I had same problem in the past and they had by mistake sent a sim that was not 4g, got replacement and problem solved
Well, the problem is that it worked at the fist time on 4G so the SIM was 4G not 3G, but I have just comeback from their store, at the first the technical support did something in their system and switched the phone to airplane mode then turn the network ON back and the deice worked on 4G but after a couple of minutes the phone switched to 3G without going back to 4G, then he advised me that this problem either a SIM or handset problem and it's always 90% SIM problem, so we changed the SIM card and the phone is working on 4G for around 30 minutes till now, I hope it will keep working on 4G
2 days and phone is still working on 4G, it was a SIM card problem
Aoa dear
I.have the issue of secure folder as its not there in my cell phone and when i install it from play store and open it but failed to open as it give the option knox mode failed