Poor network on WCDMA - Galaxy S6 Edge+ Q&A, Help & Troubleshooting

I bought a brand new galaxy s6 edge dual sim-9287 from Hong Kong. I have good network signal on 2G network but the WCDMA/3G. network reception is not good on my 9287 phone while there is good WCDMA network in my old galaxy S4. I am using the phone in Africa.
I have flashed several modems.bin and factory reset but nothing improved.
Any advice is highly appreciated, please.

gachana said:
I bought a brand new galaxy s6 edge dual sim-9287 from Hong Kong. I have good network signal on 2G network but the WCDMA/3G. network reception is not good on my 9287 phone while there is good WCDMA network in my old galaxy S4. I am using the phone in Africa.
I have flashed several modems.bin and factory reset but nothing improved.
Any advice is highly appreciated, please.
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It's odd that I know the answer to this question from a vastly different device. Back in the early 2000s before modern androids I used to get phones from China. Cdma phones that didn't take sim cards. But used UMTS. This isn't a bootloader/modem issue and that's why you haven't been able to solve it. It's a radio issue. Older phones use radio bands, your devices radio is for the wrong country.

Related

3g problem i9505

i bought a unlocked galaxy s4 i9505 and im using it in mexico with a telcel chip, the problem is that now im having problems with the 3g, sometimes it gets the signal but its only for a short time, im only getting edge, i dont know what might be the problem, the 3g frequency here is 850 mhz so it is supported by the i9505,so if anyone might know something that can help me i would appreciate it. thanks!
asr7 said:
i bought a unlocked galaxy s4 i9505 and im using it in mexico with a telcel chip, the problem is that now im having problems with the 3g, sometimes it gets the signal but its only for a short time, im only getting edge, i dont know what might be the problem, the 3g frequency here is 850 mhz so it is supported by the i9505,so if anyone might know something that can help me i would appreciate it. thanks!
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Probably a provider issue due to bad coverage. Have you tried inserting a simcard of a different provider from a friend/relative to see if reception is better or tried reception on other locations with your simcard?
calls ardiods
gee2012 said:
Probably a provider issue due to bad coverage. Have you tried inserting a simcard of a different provider from a friend/relative to see if reception is better or tried reception on other locations with your simcard?
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i tried inserting my simcard on another phone more specific an iphone 4s, and the iphone does get 3g, also i inserted in the s4 the simcard from a friend and it gets 3g for a short period of time but then it goes to edge again.
I too have a similar problem although I think mine was down to stupidity!
Anyway, try setting the Network to either 3G or 2G/3G only and not 4G/3G/2G. That's fixed it for me anyway!
asr7 said:
i tried inserting my simcard on another phone more specific an iphone 4s, and the iphone does get 3g, also i inserted in the s4 the simcard from a friend and it gets 3g for a short period of time but then it goes to edge again.
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Click to collapse
gnasher666 said:
I too have a similar problem although I think mine was down to stupidity!
Anyway, try setting the Network to either 3G or 2G/3G only and not 4G/3G/2G. That's fixed it for me anyway!
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Click to collapse
yes i already tried that, but it doesnt works, it only gets me edge signal, and sometimes but a very few times it gets 3g but only for a moment then loses it, i have no idea what can be happening
asr7 said:
i bought a unlocked galaxy s4 i9505 and im using it in mexico with a telcel chip, the problem is that now im having problems with the 3g, sometimes it gets the signal but its only for a short time, im only getting edge, i dont know what might be the problem, the 3g frequency here is 850 mhz so it is supported by the i9505,so if anyone might know something that can help me i would appreciate it. thanks!
Click to expand...
Click to collapse
Are you using an original or a self made one out of a regular sim?
I had a similar problem using a self cut microsim. Replacing it with an original one solved it for me.
andymihail said:
Are you using an original or a self made one out of a regular sim?
I had a similar problem using a self cut microsim. Replacing it with an original one solved it for me.
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it was an original one, the carrier cut it for me, and it was working great but suddenly it started having problems, also i put the same sim on an iphone 4s and there it does works, but i will try that maybe it can work on the s4, thanks!

Help help me please

Hey Everyone,
So I just purchased a second hand S6 Edge international unlocked phone. I am in Ireland and on the Three network.
What I have noticed is that the phone see's 3 different networks for three but none of them are 3G or 4G
If I search for a network on my S5 it will again see 3 networks but they are distinguished by a 3G or 4G after it.
My phone will not connect unless I drop it down to 2G only and I also noticed that under network mode I have the option of LTE/3G/2G (Auto connect) or 3G, 2G
Same menu on the S5 give me LTE/wcdma/GSM ect..
Is there an issue with this phone and it not been compatible on the Irish network?
Hope someone says no
This is the Edge + forum, you say you have a S6 Edge. Correct? Different device. If that's the case you need to post on the Edge forum.
Fwiw I've tried a lot of SIM cards from different providers without any problems - unlikely to be a hardware fault.
B3311 said:
This is the Edge + forum, you say you have a S6 Edge. Correct? Different device. If that's the case you need to post on the Edge forum.
Fwiw I've tried a lot of SIM cards from different providers without any problems - unlikely to be a hardware fault.
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Cheers mate ill post in the edge forum, My Bad
Smokie365 said:
Cheers mate ill post in the edge forum, My Bad
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Good luck?

Bad or inconsistent LTE speeds with International S7 Edge Duos on AT&T

Has anyone experienced bad or inconsistent LTE speeds on the International S7 Edge Duos while on AT&T? I was out walking the dog yesterday and my speeds were ranging anywhere from 0.3 megabits/second to 12 megabits/second depending on which block I am on. This morning, on my commute to work, I had anywhere from 2 megabits/second speeds or 32 megabits/second speeds depending on where I am on the road.
Is the International not nearly as good with using AT&T band LTE? Is there perhaps an APN setting I should be making? Or should I just learn to live with this?
Thanks in advance
No one has encountered this at all? Perhaps it's emblematic of a potential defect?
Im on att using g935fd, no issue with lte. Im ranging from 15-30 mbps depending on the area. im in boston,ma
in dallas with a 935FD and i've been getting average 29mb down/19mb up... check your APN and also consider testing with another sim card if you have one available.
I'm having the same issue. There is definitely something going on with the Duos. I'm on T-mobile and experience weaker signal (10-15 dBm) on Duos than I get on my 935T sitting next to it. I've flashed several modems, csc's and firmwares. Nothing has helped. Even lost signal last week at a clinic and had to tether of my wife's T-Mobile s7 edge.
VinylJStar said:
I'm having the same issue. There is definitely something going on with the Duos. I'm on T-mobile and experience weaker signal (10-15 dBm) on Duos than I get on my 935T sitting next to it. I've flashed several modems, csc's and firmwares. Nothing has helped. Even lost signal last week at a clinic and had to tether of my wife's T-Mobile s7 edge.
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It got so bad that I am returning the phone. The speeds I was getting was just too low to make it a useful device.
Maybe its the rom. What firmware you guys are using? I flashed the stock g935f PHN firmware, CSC, AP and then OntheedgeLite UX rom.
There was another posst with OP having similar issue. I have issue as well. But flashing BTU csc ap bl and cp helped me gain better 4g around my home, so I thought problem was fixed. but when I go to poor reception areas and phone is switching to 2g/3g bands, I lose 4g unless restart or messing with sim options switching 4g between sim1 and sim 2.
currently on stock samsung touchwiz rom. BTU cp, csc, ap, and bl
Is it missing the appropriate at&t bands ? I'm looking at note duos as an alternative to the ATT version a day it's meant to be the same chipset and that misses one of the LTE bands.
Sent from my SAMSUNG-SM-N920A using XDA-Developers mobile app

Help needed on Korean S5 but with Australia Signal/reception

Hi guys
My Dad bought an S5 on eBay recently.
Of course we completely forgot about the fact that Korea will have different baseband (or whatever it is called) to Australian S5 models.
Therefore his signal is very weak in aus along with speeds.
Is this just a matter of replacing the antenna cable or would it need a whole new main board?
Thanks
Use another SIM on another network (other than Telstra or whatever network you're on) and see if the signal is also weak. Don't use 4G, try and see if 3G signal is better. Write the exact model number to see if the bands are different vs. the Aussie model. That could be one of multiple possible problems.

S8 no LTE connection

I bought a S8 2 years ago in the US. I am basically using it in central Europe with a Austrian SIM. Until now I have never seen the phone connecting to a LTE network, even though its enabled in the settings.
When I put the same SIM in the S9 which I bought in Europe, it'll connect to LTE almost all the time.
Are there hardware differences between US and european phones? Is it only a firmware issue?
SuperMesna said:
I bought a S8 2 years ago in the US. I am basically using it in central Europe with a Austrian SIM. Until now I have never seen the phone connecting to a LTE network, even though its enabled in the settings.
When I put the same SIM in the S9 which I bought in Europe, it'll connect to LTE almost all the time.
Are there hardware differences between US and european phones? Is it only a firmware issue?
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Um you have a European phone. A950f is not a us device. The 950u is and there are a lot of differences radios you need to make sure the phone supports your carriers lte bands. And you have your apn setup properly first

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