Any ideas why my S6 (G920F) takes forever to "find" H+/4G again? - Galaxy S6 Q&A, Help & Troubleshooting

So i've noticed with my Samung Galaxy S6 (G920F) that whenever i'm in an area of poor 3G/4G coverage, the phone happily drops down to the 2G network however when I know full well i'm back in a good area for 3G and even 4G the phone happily sits on 2G for ages to the point I sometimes have to manually force 3G network mode again to get it to come back?

I Think this might help you http://thedroidguy.com/2015/09/galaxy-s6-s6-edge-wont-connect-to-mobile-network-1048753

CarbonXperia said:
I Think this might help you http://thedroidguy.com/2015/09/galaxy-s6-s6-edge-wont-connect-to-mobile-network-1048753
Click to expand...
Click to collapse
Going to give the Factory Reset a go... wish me luck

Related

no 2g to 3g?

As the subject says recently when i turn off 3g to use edge and then go to turn back it wont let me
The only way i can get back to 3g is to turn data off and on manually by hitting airplane mode
Any suggestions?
Thanks
no one else has this issue?
I have the same issue it takes a long time to get 3g, I'm with vodafone au so the network is horrible. This might be the issue that the phone can get the troubled network.
Sent from my Nexus S using XDA App
I have this issue. Only fix I've found is airplane mode/battery pull.
However, if the phone automatically switches down to edge (2g), it will usually switch back on its own.
Don't even get me started on the frequent complete data shut-downs though, and that's with what little there is of the signal present. Completely ruined Google Voice functionality.
Sent from my Nexus S
Well IM on ATT in the northeast US. I upgraded my radio from XX to UCK and I think it solved the issue for the most. A lot of outages here tho after our storm (apparently only on ATT tho as USUAL since verizon and sprint seem to be fine. ATT blows!

Poor reception on S3 somewhat fixed

So let me start off by saying I have pretty bad reception at home with 4g.
I had an iphone 4 with a 3g range extender before I got the S3 and it worked great.
Found a free app called phone info
Went in under device information, selected cdma auto (PRL). I restarted my phone.
I now have 5 bars and perfect clarity.
*** I must have been on another planet with this post...
gingi999 said:
Went in under device information, selected cdma auto (PRL). I restarted my phone.
I now have 5 bars and perfect clarity.
Click to expand...
Click to collapse
You get 4g in CDMA auto (PRL) mode?
gingi999 said:
So let me start off by saying I have pretty bad reception at home with 4g.
I had an iphone 4 with a 3g range extender before I got the S3 and it worked great.
Found a free app called phone info
Went in under device information, selected cdma auto (PRL). I restarted my phone.
I now have 5 bars and perfect clarity.
Click to expand...
Click to collapse
I am usually about 2 bars where I am. Making this switch didn't change my number of bars or dbm. I'm glad it worked for you however.
I expect by making this change, you are basically downgrading to 3G until you set it back.
If you have a network extender for 3G then that's the fix. Not turning on thst option.
mtnmeow said:
You get 4g in CDMA auto (PRL) mode?
Click to expand...
Click to collapse
It switches to 3G
michael* said:
I am usually about 2 bars where I am. Making this switch didn't change my number of bars or dbm. I'm glad it worked for you however.
I expect by making this change, you are basically downgrading to 3G until you set it back.
Click to expand...
Click to collapse
I am downgrading to 3G and my range extender only works for 3G not 4g. Verizon claims to not have a 4g extender yet.
Elite49 said:
If you have a network extender for 3G then that's the fix. Not turning on thst option.
Click to expand...
Click to collapse
Not exactly. The phone will stay in 4g with one bar even if 5 bars of 3G is available. So forcing the phone to switch to 3G is the only way I got the call quality I needed to make calls in my house
What's the make and model of this range extender?
Sent from my SCH-I535 using Tapatalk 2
Unstable 3G performance
So I've had my S3 for a little over a month and have noticed the poor call reception that people have mentioned,especially in my office building. My old droid 2 global never had a problem, but when I receive calls on the S3 i have to walk to A window down the hall to keep the call from dropping. In an attempt to stay on the more stable 3G coverage in the area I installed phone tools and forced 3G. The problem I have now is that when I'm out of the office or house and not on wifi, I pull the phone put of my pocket to check something and there is no data connection at all now. Even if I open my browser and try to force a connection I get nothing. If I set the radio back to include LTE I have a reliable data connection everywhere but my calls are still poor.
Am i missing something when setting the phone to be 3G only? Thanks.
Ok i tried that phone info program and set it tup cdma auto or whatever, and no improvement. How do i get back to stock? I tried setting to lte/cdma/evdo but it does not stick. I tried uninstalling the program and the phone would stick to 3g. Help!
hypertek said:
Ok i tried that phone info program and set it tup cdma auto or whatever, and no improvement. How do i get back to stock? I tried setting to lte/cdma/evdo but it does not stick. I tried uninstalling the program and the phone would stick to 3g. Help!
Click to expand...
Click to collapse
Just download the phone info app and switch it back to lte/CDMA/evdo when you switch it turn off the radio at the bottom and wait for a couple secs then turn it back on
Sent from my SCH-I535 using xda app-developers app
I wish Verizon and Samsung would just get together and try and resolve why their phones don't work well on Verizon's network. I figured they'd learn what they did wrong with the Nexus - pretty upset they never resolved it with the S3. I'm hoping the DNA/DLX from HTC doesn't have this issue. I liked the Samsung S3 in just about every way but the reception is wretched compared to Motorola phones.
yea I agree...the reception is awful. Literally can't use the phone for business. Everything else about it is awesome though
gingi999 said:
Not exactly. The phone will stay in 4g with one bar even if 5 bars of 3G is available. So forcing the phone to switch to 3G is the only way I got the call quality I needed to make calls in my house
Click to expand...
Click to collapse
I'm missing something. How does 3g/4g have anything to do with your calls? The phone works with data turned off. Are you using Skype?
sincerity said:
yea I agree...the reception is awful. Literally can't use the phone for business. Everything else about it is awesome though
Click to expand...
Click to collapse
I've pretty much given up on Samsung and Verizon as much as I love the phone as a PDA, as a phone it sucks.
sincerity said:
yea I agree...the reception is awful. Literally can't use the phone for business. Everything else about it is awesome though
Click to expand...
Click to collapse
It has to do more with your location I think..I work in the tri-county are of Detroit and my reception is excellent. Had a Cappy on ATT before my GS3 on Verizon and could not even get a signal in our office building..now on Verizon I'm at least 4 bars and full strength pretty much everywhere else..
Tyggy said:
It has to do more with your location I think..I work in the tri-county are of Detroit and my reception is excellent. Had a Cappy on ATT before my GS3 on Verizon and could not even get a signal in our office building..now on Verizon I'm at least 4 bars and full strength pretty much everywhere else..
Click to expand...
Click to collapse
It seems to have to do with the technology of the Verizon towers in your area. In LA with a motorola phone I lock on no problem and get great reception. With the S3 you'll switch from 4 bars - drop the call and switch back to 4 bars even when stationary. Motorolas don't have that issue with Verizon's network. I know several people with the S3 including people in CT and TX - all having the same issue on Verizon's network.
mysterysauce said:
Just download the phone info app and switch it back to lte/CDMA/evdo when you switch it turn off the radio at the bottom and wait for a couple secs then turn it back on
Sent from my SCH-I535 using xda app-developers app
Click to expand...
Click to collapse
ok thanks, i tried this, and still seems to be stuck.
boe said:
I wish Verizon and Samsung would just get together and try and resolve why their phones don't work well on Verizon's network. I figured they'd learn what they did wrong with the Nexus - pretty upset they never resolved it with the S3. I'm hoping the DNA/DLX from HTC doesn't have this issue. I liked the Samsung S3 in just about every way but the reception is wretched compared to Motorola phones.
Click to expand...
Click to collapse
+1000 on Verizon and Sammy needing to fix this
Sent from my SCH-I535 using Xparent Red Tapatalk 2

[Q] Stuck on EDGE or GPRS

When I'm on data, my phone is stuck on EDGE or GPRS when it should go up to 3G or H+. I've tried restarting my phone, turning wifi on and off, turning data on and off and made sure my settings looked okay. Any help is appreciated!
Cataclysm 11/26, Franco r14, dalvik patch. And if it's relevant, I'm on Rogers wireless.
I'm not sure but doesn't Rogers use global frequency in which case you need the 821 model?
I've definitely had 3G and H+ on my N5 (abbreviations much?), but it just seems very inconsistent. It'll go from H+ to 3G, back to H+, then cut out completely, then sit on E or G for a while. Just trying to pinpoint the issue because it's getting annoying haha. Perhaps it's the frequency that's screwing it up but that's definitely not my area of expertise. I do have the D820 model if that's helpful.
I'm having exactly the same problem with Fido right now, I tried pretty much everything including
- flashing back the factory image
- tried every modems from the xda thread in the Nexus 5 Android Development section (currently my phone is on the D821 modem but it didn't change anything)
- changing my apn (but it was obvious that this was not the problem since the phone had a edge connection.
I'm really about to call Fido...
Still, I'm kinda glad to see that i'm not alone.
maybe that the data service in your personal area?
Well going back and forth between 3G and H is normal. It picks up H/H+ when receiving/transmitting and goes to 3G when idle to save power.
obsanity said:
Well going back and forth between 3G and H is normal. It picks up H/H+ when receiving/transmitting and goes to 3G when idle to save power.
Click to expand...
Click to collapse
I called Fido, the technical support told me that they had something that was blocking me from 3G (but he didn't tell me what it was, he just told me that something was blocking me...) I had my beloved H+ back for maybe a whole minute and then it just switched back to Edge network.
All I wanted to know was if many customers have reported the problem or if I were alone...
Maybe if I'm lucky my phone will get back its 3G soon just like you.
I'm still having the issue today.
I called back Fido and they tried different things like desactiving/activing back my line, "updating my line" and more without any success.
Then I called google and told them the problem. They will change my Nexus 5 for a brand new but at the same time I feel like it is a software issue and not an hardward one... Well, we'll see, I never had a problem like that with any other phone before and the Nexus 5 never had any problem with 3G before yesterday.
I haven't tried everything yet, maybe you could try :
If you are in a LTE area, can the Nexus 5 connect itself to this network? Nearest LTE area from where I live is like 40 minutes away, bit too far just for a test.
Try with a sim card from another company like Telus or Bell, is the phone connecting to the 3G network? (I though about this while calling Google..)
Well, hope that the next phone will be ok.
Here are the few pictures just to show you a proof that even when I request a webpage, the phone will stays on 2g only.
http://imgur.com/a/a0QJ7
mark1s said:
I'm still having the issue today.
I called back Fido and they tried different things like desactiving/activing back my line, "updating my line" and more without any success.
Then I called google and told them the problem. They will change my Nexus 5 for a brand new but at the same time I feel like it is a software issue and not an hardward one... Well, we'll see, I never had a problem like that with any other phone before and the Nexus 5 never had any problem with 3G before yesterday.
I haven't tried everything yet, maybe you could try :
If you are in a LTE area, can the Nexus 5 connect itself to this network? Nearest LTE area from where I live is like 40 minutes away, bit too far just for a test.
Try with a sim card from another company like Telus or Bell, is the phone connecting to the 3G network? (I though about this while calling Google..)
Well, hope that the next phone will be ok.
Here are the few pictures just to show you a proof that even when I request a webpage, the phone will stays on 2g only.
http://imgur.com/a/a0QJ7
Click to expand...
Click to collapse
Thanks for the update mark1s. Definitely let me know if a new phone fixes anything, although I'm also thinking it's a software problem.
The problem could just be that there happens to be patches of low coverage in the areas we're testing this out, which seems unlikely in big cities. But testing at work seems to have this problem, but testing this at home I pick up 3G and H+ just fine. Odd..

[Q] Nexus 5 only connects to LTE on T-Mobile

I did some searching around and found a couple of pages with ideas but they have not worked so far. Here's the deal, my son's said his Nexus 5 was getting pretty bad reception so I took a look at it. After some toggling of the network settings I discovered that it will only connect to LTE, not to HSPA(+) or Edge. Where we are, we have somewhat weak LTE (2 of the three towers have been "modernized" with LTE and band 2 HSPA+, one has not and it's slightly closer to us). We have a Cell-Fi repeater so we get strong HSPA+ signal in our house. His sim works fine in a Nexus 4 with the hybrid radio getting Edge, HSPA+ and LTE. My nano sim with adapter that works fine in the Nexus 4 exhibits the same problems in the Nexus 5. I tried formatting the cache from the stock recovery menu and am now looking to do a factory reset since I never did oem unlock this phone so I can't just flash a radio to test.
My gut tells me it's hardware so I have my son rebuilding his phone environment on the Nexus 4 so that we can do a factory reset to see if that helps and I'll unlock it at that point. If it doesn't fix it, I've already started the conversation with the play store. My question is, anyone else seen anything like this? Anything else I should try out?
peterb
pboggini said:
I did some searching around and found a couple of pages with ideas but they have not worked so far. Here's the deal, my son's said his Nexus 5 was getting pretty bad reception so I took a look at it. After some toggling of the network settings I discovered that it will only connect to LTE, not to HSPA(+) or Edge. Where we are, we have somewhat weak LTE (2 of the three towers have been "modernized" with LTE and band 2 HSPA+, one has not and it's slightly closer to us). We have a Cell-Fi repeater so we get strong HSPA+ signal in our house. His sim works fine in a Nexus 4 with the hybrid radio getting Edge, HSPA+ and LTE. My nano sim with adapter that works fine in the Nexus 4 exhibits the same problems in the Nexus 5. I tried formatting the cache from the stock recovery menu and am now looking to do a factory reset since I never did oem unlock this phone so I can't just flash a radio to test.
My gut tells me it's hardware so I have my son rebuilding his phone environment on the Nexus 4 so that we can do a factory reset to see if that helps and I'll unlock it at that point. If it doesn't fix it, I've already started the conversation with the play store. My question is, anyone else seen anything like this? Anything else I should try out?
peterb
Click to expand...
Click to collapse
if lte is in your area, and not a perfect signal, itll still choose to connect to lte by default. if you lose your lte connection, then itll connect to H or 3G, and so on. if you do not want it to connect to lte, go to the phones main settings, mobile networks, then change the preferred network type from lte to 3G. or you can dial *#*#4636#*#*, chose phone info, then change the network type to wcdma preferred.
simms22 said:
if lte is in your area, and not a perfect signal, itll still choose to connect to lte by default. if you lose your lte connection, then itll connect to H or 3G, and so on. if you do not want it to connect to lte, go to the phones main settings, mobile networks, then change the preferred network type from lte to 3G. or you can dial *#*#4636#*#*, chose phone info, then change the network type to wcdma preferred.
Click to expand...
Click to collapse
Thanks for the reply, I understand all that. I don't know if I asked clearly enough or not but the problem we are seeing here is that this particular phone can only connect to LTE which is weak inside my house. So, when it tries to switch over, it just won't connect. I also tried to make a call which will switch to HSPA+ and that too fails. Going to the info menu and selecting WCDMA preferred nets me a phone that won't connect, selecting GSM results in the same. LTE only or GSM/LTE works only if it picks up an LTE signal. Ditto for selecting 2G, 3G or LTE preferred in the Mobile Networks menu. I've also reset the APN's, confirmed that the settings match my MotoX, etc and still no joy.
Just looking for ideas that someone might have that I can try before blowing away all my son's data on a factory reset or, if that fails, hardware replacement.
peterb
pboggini said:
Thanks for the reply, I understand all that. I don't know if I asked clearly enough or not but the problem we are seeing here is that this particular phone can only connect to LTE which is weak inside my house. So, when it tries to switch over, it just won't connect. I also tried to make a call which will switch to HSPA+ and that too fails. Going to the info menu and selecting WCDMA preferred nets me a phone that won't connect, selecting GSM results in the same. LTE only or GSM/LTE works only if it picks up an LTE signal. Ditto for selecting 2G, 3G or LTE preferred in the Mobile Networks menu. I've also reset the APN's, confirmed that the settings match my MotoX, etc and still no joy.
Just looking for ideas that someone might have that I can try before blowing away all my son's data on a factory reset or, if that fails, hardware replacement.
peterb
Click to expand...
Click to collapse
ok, i understand now. i didnt know that it wasnt connecting to h or 3G when it should. to me it sounds like a device ready to get an rma. i mean there is a hardware mod that could possibly fix it, but its not worth the trouble. if you can get an rma, get an rma.
simms22 said:
ok, i understand now. i didnt know that it wasnt connecting to h or 3G when it should. to me it sounds like a device ready to get an rma. i mean there is a hardware mod that could possibly fix it, but its not worth the trouble. if you can get an rma, get an rma.
Click to expand...
Click to collapse
Yea, according to the nice person I spoke to at the play store, I should indeed qualify for an RMA and I should find out in the next day or so. I purchased the phone new in box from someone and they were able to find the phone and they are now attributing the phone to me.
I am curious about the hardware mod though. Is this just for Edge/HSPA or is it for signal in general? If it's signal in general then I'm not sure I'd want to try it since this phone used to work just fine.
peterb
pboggini said:
Yea, according to the nice person I spoke to at the play store, I should indeed qualify for an RMA and I should find out in the next day or so. I purchased the phone new in box from someone and they were able to find the phone and they are now attributing the phone to me.
I am curious about the hardware mod though. Is this just for Edge/HSPA or is it for signal in general? If it's signal in general then I'm not sure I'd want to try it since this phone used to work just fine.
peterb
Click to expand...
Click to collapse
its just for a better signal in general.
simms22 said:
its just for a better signal in general.
Click to expand...
Click to collapse
Ah, assuming it's this then:
http://forum.xda-developers.com/google-nexus-5/general/hardware-mod-increse-signal-strength-t2842599
peterb
pboggini said:
Ah, assuming it's this then:
http://forum.xda-developers.com/google-nexus-5/general/hardware-mod-increse-signal-strength-t2842599
peterb
Click to expand...
Click to collapse
yup, thats it
but i would chose the rma route, as the nexus 5 shouldnt be behaving that way.
simms22 said:
yup, thats it
but i would chose the rma route, as the nexus 5 shouldnt be behaving that way.
Click to expand...
Click to collapse
Yes, agreed. OK, just asking around as much as possible. I'm betting he will be getting a new phone.
peterb

Poor S8+ data hangover...Bad 3G/4G signal/performance

I thought that S8+ has better antenna and modem than my iPhone 7+. But I made mistake. It is far worse than 7+. Even I have full bars on 3G it switches back to 2G and if on 4G it switches on 3G. WTF Samsung!?
I need to access service menu and set 3G/4G only but I have another thread about service menu which I cannot access....
Go to settings, connections, mobile networks, and tap network mode. Is 4G/3G/2G enabled? If not, enable it, and see if 4G connects
galaxyYtester said:
Go to settings, connections, mobile networks, and tap network mode. Is 4G/3G/2G enabled? If not, enable it, and see if 4G connects
Click to expand...
Click to collapse
Please READ CAREFULLY what I wrote.
stefan063 said:
I thought that S8+ has better antenna and modem than my iPhone 7+. But I made mistake. It is far worse than 7+. Even I have full bars on 3G it switches back to 2G and if on 4G it switches on 3G. WTF Samsung!?
I need to access service menu and set 3G/4G only but I have another thread about service menu which I cannot access....
Click to expand...
Click to collapse
Which Variant do you have? I had a similar issue when I first bought the Verizon S8+ to use on Cricket/AT&T. I ended up having to return it and get the AT&T one. The first one I had would run on 4G or LTE with 4-5 bars and would constantly loose service, and every time I would try to make a call it would switch to 3G and tell me that international calling was not on my plan until 3 or more attempts later. Then it would finally make the call on 3G network. Since I've swapped I haven't had this problem. No I still don't get as good of signal as my iPhone 7 plus but it's comparable now.
AndroiderM said:
Which Variant do you have? I had a similar issue when I first bought the Verizon S8+ to use on Cricket/AT&T. I ended up having to return it and get the AT&T one. The first one I had would run on 4G or LTE with 4-5 bars and would constantly loose service, and every time I would try to make a call it would switch to 3G and tell me that international calling was not on my plan until 3 or more attempts later. Then it would finally make the call on 3G network. Since I've swapped I haven't had this problem. No I still don't get as good of signal as my iPhone 7 plus but it's comparable now.
Click to expand...
Click to collapse
International Sim-Unlocked 955F variant (EXYNOS). It is OK to switch from 4G to 3G if operator doesn't support VoLTE on its network. But that is not my problem. Full bar 3G, surfing web and it switches to 2G. NOT NORMAL. Same as on 4G to 3G. Full 4G bars.
If you have tried factory reset and all other trouble shooting, I'd just set up a RMA and get a new one. If you are in the US maybe the Snapdragon if you're willing to sacrifice root. Sounds really annoying to have a phone with LTE and be stuck using 2G. Just my 2 cents
Got the same issue...
stefan063 said:
I thought that S8+ has better antenna and modem than my iPhone 7+. But I made mistake. It is far worse than 7+. Even I have full bars on 3G it switches back to 2G and if on 4G it switches on 3G. WTF Samsung!?
I need to access service menu and set 3G/4G only but I have another thread about service menu which I cannot access....
Click to expand...
Click to collapse
Hi Friend, it so true...
I use S8 Plus and experience the same issue. If we only use S8, we will never realized this fail but if we use another device like Sony Experia or Mi5 (my experience), we will realized that S8 has worse signal receiver. I complained it to Samsung through Twitter, just say they will check on it and never get back to my last message.
Kind of mess for an expensive phone and high class brand.
Same with me
mdarsika said:
Hi Friend, it so true...
I use S8 Plus and experience the same issue. If we only use S8, we will never realized this fail but if we use another device like Sony Experia or Mi5 (my experience), we will realized that S8 has worse signal receiver. I complained it to Samsung through Twitter, just say they will check on it and never get back to my last message.
Kind of mess for an expensive phone and high class brand.
Click to expand...
Click to collapse
I'm having the same problem, with 3G makes a hang out signal, and I need to turn on the airplane mode and turn off to get signal and H+ or 4G, did you find a solution with this issue?

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