[Q] Nexus S - Very poor reception - Nexus S Q&A, Help & Troubleshooting

Hello,
I bought a refurbished Nexus S from an online retailer in my country. As soon as I got it, I flashed CM10.1 on it and got it up and running but I immediately realised that the signal strength on the phone was WEAK! I only got 1-2 bars in my living room and sometimes no signal strength at all. However, as soon as I go out to my apartment's balcony, everything is back to full signal strength. The phone just keeps on dropping reception.
I looked into it and found that my phone had the M200KRKC1 radio so I said to my self, hey, lets flash it with one of the newer radios and it should be fine, right? WRONG! I'm running one of the newer KF radios and it's still the same.
Summary:
Initial radio: M200KRKC1
Current radio: Newer KF radio.
Situation: The same as before, weak reception.
Any help with this would be highly appreciated because this is driving me insane and I have to resort to an old Nokia phone of mine till then.
Thanks and regards.

You've got the Korean M200 (sojuk) version. According to Google official image website https://developers.google.com/android/nexus/images#sojuk , M200KRKC1 is already the latest radio. Could it be incompatible radio (hardware) issue?

Thanks for your response. I am not sure if its hardware but the reception was the same with the other radio too. I'm stumped

South Korean carriers are CDMA2000 and UMTS based (http://en.wikipedia.org/wiki/Mobile_Network_Code#K). I think M200 radio support CDMA2000 and HSPA, not sure about GSM support level, which is used in Pakistan (http://en.wikipedia.org/wiki/Mobile_Network_Code#P).
This is based on info in wiki, which may not be up-to-date or accurate.
Just my 2 cents.

Related

On US AT&T. Received GT-I9020FSRRWC. Question...

So I ordered a new, sealed I9020A from eBay. Arrived today (I'm out of town) and my wife took a photo of the box. It's a model GT-I9020FSRRWC, which is a Canadian variant of the Nexus S with compatible US 3G bands (AT&T). Here is my question:
I have had several I9020A's in the past here in the US. All had horribly slow 3G data and I returned all three of them because of this. Now, I know that Best Buy is subsidizing an I9020A variant for AT&T, making the model "sanctioned" on AT&T. I have to believe the radio & firmware for that model works seamlessly with AT&T's network (which the Canadian I9020A's don't). I know I can flash the radio from KB1 to KB3 or something similar, but would applying the firmware for the following make it identical to what Best Buy is selling as the official AT&T variant?
GTJ61 - Android 2.3.4, the original Nexus S firmware for the US version of I9020A.
From here: http://forum.xda-developers.com/showthread.php?t=1063664
Basically, I want the identical firmware and radio as the units sold for AT&T by Best Buy on my Canadian device because I don't want to deal with any network funkiness. It's maddeningly frustrating...
Thanks.
I've tried the new AT&T modem, it's still speed hobbled. For some reason, all modems that come with the i9020a have a capped transfer rate. I've flashed the KB3 radio from the i9020T series and i can now easily reach over 2 megs on the upload.
the KB3 modem also deadens the search button bug a lot.
Hmm, not the news I had hoped for. I'll give it a shot...thanks.
Sent from my GT-I9100 using XDA Premium App
So does anyone know the difference between the GT-I9020A and GT-I9020FSRRWC?
Thanks!
use the HSPA build.prop tweaks from the radio thread http://forum.xda-developers.com/showthread.php?t=1116884 with KF1 radio you should have normal speeds so long as its not a hardware issue

[Q] Android 850MHz issue

[Q]
Alright guys I need some help.
I have a Huawei Ascend G300.
Model Number: U8815
Android: 2.3.6
Baseband Version: 109808
Build Number: B895
Not rooted.
The phone specifications say that it supports 3G 850MHz,
but I get almost no signal using a 850MHz network.
I believe it is some sort of restriction placed by firmware maybe.
Might need custom rom or something so I can actually use the phone.
Any one can give me any information regarding this?
Thanks in advance.
What I should say is that it only works where there is 2100MHz reception (very few areas)
but I want to be able to connect to the 850MHz band that is available everywhere.
That involves the radio part of the firmware,which 99% people don't change.It's better off if you don't change it too.It's highly unlikely that they would wantedly block the reception of the phone,and its even more unlikely you'd have someone who has created a custom stable radio for a Huawei.Have you considered that the 850Mhz signal might be weak in your area,or that your phone's hardware might not be good at receiving it?If you're sure it's not either of these issues,your best bet is to restore it to factory defaults,or reflash the original ROM.
SunnyChrono6 said:
That involves the radio part of the firmware,which 99% people don't change.It's better off if you don't change it too.It's highly unlikely that they would wantedly block the reception of the phone,and its even more unlikely you'd have someone who has created a custom stable radio for a Huawei.Have you considered that the 850Mhz signal might be weak in your area,or that your phone's hardware might not be good at receiving it?If you're sure it's not either of these issues,your best bet is to restore it to factory defaults,or reflash the original ROM.
Click to expand...
Click to collapse
The phone has the original rom and is not rooted.
gsmarena.com/huawei_ascend_g300-4594.php
The phone specifications say that it supports both 850 and 900 bands.
I live in New Zealand where Vodafone operates on the 900MHz range.
The alternative provider Telecom operates on the 850MHz range and has full coverage throughout the country.
Given the specifications of the phone I can only conclude that either the firmware restricts use of a non Vodafone band
or that the phone is locked to Vodafone (however im pretty sure the phone is not network locked)
If anyone has this phone and is using a 850MHz network, I would like to know what firmware etc. they are running.
Thanks again for the help.

[Q] Question regarding the radio modem

Hi,
Blaze 4G is one of the few phone whose radio supports both AWS and PCS bands (1700/2100 and 1900, respectively). Currently, I am using AT&T network with StraightTalk (PCS band). Here is my question, will new modem version for this phone support the same UMTS frequency bands as the original one? There is a new UVLH5 radio available for ICS. What is practical difference between UVLB7 and UVLH5? I really need my phone to support American PCS, AWS as well as European IMT, as I use my phone there too.
Thanks!
Well, seems like the new UVLH5 modem support same frequency bands as the original one. I tried swapping AT&T sim with T-mobile sim, and they both worked fine (HSPA). I still do not know what is different between the old and new modems - I did not notice any difference. BTW, new ICS modem works fine with GB rom.
E107946 said:
Well, seems like the new UVLH5 modem support same frequency bands as the original one. I tried swapping AT&T sim with T-mobile sim, and they both worked fine (HSPA). I still do not know what is different between the old and new modems - I did not notice any difference. BTW, new ICS modem works fine with GB rom.
Click to expand...
Click to collapse
i've noticed this as well. they seem completey cross compatable and i havent actually noticed ANY difference at all between any of the 3 versions.
im also using mine on straight talk, att sim, and it work great. maybe even better then the at&t moto atrix i have on straight talks att sim.
as for working in europe, i couldnt say, but if you are willing to provide the plane tickets i will gladly fly over there with my blaze and check for you.
They fixed 911 and call echo issues between the first two, as for the uvlh5 it was just minor bug fixes. I was wondering myself if there was any way to use the radios in the t989 list. They can use ours, so shouldn't it go both ways?

[Q] Clean Rom Question [Network]

Hi Guys,
So I've been running Clean Rom for roughly 6 months now, still running version 5.1 (Android Version 4.0.4) on my HTC ONE XL.
My One XL is a Telstra branded phone and thus has the capability for 850MHz. I was running on the Vodafone network and therefore not using said band, however I have recently swapped over to Telstra (Was never with them in the first place).
Unfortunately I'm not seeing the gains in reception I was hoping for, and I am currently finding that when going to locations where there should be signal, albeit edge, crappy signal, I am receiving none. My question is, does Clean Rom disable the 850MHz frequency or does it still support it? Is there a way I can check whether I am accessing the 850MHz network, and if so, how? If it isn't am I able to turn on th 850MHz frequency?
Looking forward to getting this sorted. Cheers.
ROM shouldn't make much difference in band compatibility. Since your version supports 850 MHz for both 2G (EDGE) and 3G, it should work regardless of ROM, and you don't need to "turn it on". There are "secret codes" you can enter into the dialer that will tell you information about the bands, and also signal strength. Just use the XDA search function, and you should be able to find them.
You might see some slight improvement if you are not currently on a Jellybean radio, and flash one (if hboot 2.14 or higher, you will need to s-off). But I wouldn't bet on it making a huge difference.
What makes you think you should have (crappy) reception in the mentioned locations? From reception on another phone? Every phone is different (antenna design, etc.). Since you mentioned the reception at the location is already crappy, its probably more of a antenna issue than a ROM issue.
redpoint73 said:
ROM shouldn't make much difference in band compatibility. Since your version supports 850 MHz for both 2G (EDGE) and 3G, it should work regardless of ROM, and you don't need to "turn it on". There are "secret codes" you can enter into the dialer that will tell you information about the bands, and also signal strength. Just use the XDA search function, and you should be able to find them.
You might see some slight improvement if you are not currently on a Jellybean radio, and flash one (if hboot 2.14 or higher, you will need to s-off). But I wouldn't bet on it making a huge difference.
What makes you think you should have (crappy) reception in the mentioned locations? From reception on another phone? Every phone is different (antenna design, etc.). Since you mentioned the reception at the location is already crappy, its probably more of a antenna issue than a ROM issue.
Click to expand...
Click to collapse
I'm not sure where you're located, Telstra is the largest Telco in Australia with the largest and best coverage. Vodafone unfortunately has a very bad reputation for reception. Swapping from Vodafone which does not use an 850MHz band to Telstra, which does, has netted me reverse effects. I am receiving worse reception, which should not be the case. If I go into fringe areas where edge is the best signal you receive, I will receive none, where as in town locations where more than the 850 band is used, I receive okay signal. Just seems like I'm not picking up the 850 band.
As I already mentioned, search for the "secret" dialer codes. There are codes that will tell you the cell tower signal, and I believe band, which sounds like what you need.
None of the dialer codes seem to allow me to see what particular frequency I'm using. Unless I'm just completely missing something? The only thing that seems to provide me with info on the radio only states Network Type and the DBM.

[Q] Poor signal strength compared to other devices?

Hi,
I just bought my One S (had a Desire before that) and Im very happy with it, except for the signal and especially the mobile internet. I always had 3+ signal bars in my house, now I have 1 or sometimes none. I use my phone at school to google some stuff but while other devices (Blackberry Bold, S4 mini) can acess the internet I have no connection. Sometimes I have 2 bars and E(DGE) but my browser or Whatsapp wont work.
My friends have always 3G/H and inside the school I never have more than E, but I set my phone to GSM/WCDMA auto.
Sometimes the phone loses the connections even on flat areas like fields.
Is there a way to improve my signal strength? A new Radio ROM?
P.S: My One S has the S4, everything original and no root, S-ON
What software version are you on? And what carrier?
Mine has way better signal than my sisters S3 and it's about equal to my girlfriends Iphone4s, but we're on Telus/Bell network which has HSPA only, no 2g network, so I set it to WCDMA only. I haven't had any problems with reception dropping or data drops at all, but I've heard of some issues with the same phone on the Rogers network which has 2g as well like some of the US carriers.
Software Version: 3.16.401.9
HTC SDK API: 4.63
Baseband: 1.15.50.05.29_10.30.50.08L
Thats all I found under Software...
Im from Germany and I dont know if youre familiar with the carriers here, but I use congstar therefore the D1-network of the german Telekom which is pretty good here. Look like Im on the newest RadioROM, so how to improve my connection?
Looks like I'm on an older radio starts with 1.11 instead of 1.15. Does your network have regular gsm?
Sent from my HTC One S using xda app-developers app
I can use EDGE when setting my phone to GSM only, but I have not more than 2 bars even outdoors...on WCDMA only I have none or 1 bar outdoor, in buildings: no connection. So yes, I have GSM and WCDMA.
Well I don't know, you could try rooting and flashing a different radio, and some build.prop tweaks that affect the connection, but there is no guarantee that will fix it. Is it still under warranty? Rooting may be risky if you're still under warranty. Could try talking to your carrier and see if they can do anything.

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