Hello
Does the region of your ROM affect GPS, if so how can this be fixed ?
I live in South Africa which means we get our updates late or in some other phones... never. I have been using various custom roms over the time but until recently I was using one from the Netherlands. I had been constantly plagued by poor GPS lock times (1 minute+) using GPS Status or other fixes did basically nothing for me but yesterday I thought "Let me switch to the South African rom since it's been out a while" and gps is very quick to lock.
If the region does affect GPS what could I do to get around it ?
My current rom is
I9100XWLP7_I9100OJCLP6_I9100XXLPS_HOME.tar.md5
Thanks in advance.
mmm...in fact the thing that can affect ur GPS signal is the MODEM, unless that the version of the rom have issues with GPS. u should look up for some differents modems and flash them and try them, because MODEMs are affected with differents geographical zones
Take a look at this thread, it may help and choose the configuration near to your country or your country.
http://forum.xda-developers.com/showthread.php?t=1233256&highlight=gpscountry.
Wrong.
Modem has nothing to do with GPS, unless you're using mobile data to get the initial satellite ephemeris data. Then (obviously), your phone will use the modem/radio for that very short (a few seconds at most) period of time it takes to download the ephemeris data.
Other than that, modem has no bearing on GPS whatsoever.
pelpa87 said:
mmm...in fact the thing that can affect ur GPS signal is the MODEM, unless that the version of the rom have issues with GPS. u should look up for some differents modems and flash them and try them, because MODEMs are affected with differents geographical zones
Click to expand...
Click to collapse
MistahBungle said:
Wrong.
Modem has nothing to do with GPS, unless you're using mobile data to get the initial satellite ephemeris data. Then (obviously), your phone will use the modem/radio for that very short (a few seconds at most) period of time it takes to download the ephemeris data.
Other than that, modem has no bearing on GPS whatsoever.
Click to expand...
Click to collapse
Excuse me mate but afaik modem takes care of all connections, that means wi fi, gsm signal and gps as it is a connection too
Sent from my GT-I9100 using xda premium
pelpa87 said:
Excuse me mate but afaik modem takes care of all connections, that means wi fi, gsm signal and gps as it is a connection too
Sent from my GT-I9100 using xda premium
Click to expand...
Click to collapse
no ma8 wifi is related more with the kernel than modem,hence u should have a compatable kernel to have good wifi connection
No.
Modem does not have any bearing on GPS. And it definitely doesn't have any bearing on WiFi, because as Sun correctly said WiFi drivers are in the kernel.
Related
Hey all, i thought i would start a thread about an issue that many canadians seem to have with the GS2, it seems to have been beat to death but there is no actual solution.
Im currently using the GS2 with Telus, its a wcdma/3G/H/H+ carrier using the frequency 1900 mostly and 850 at times on the cdma network, i used so far KG3-KG6 i placed them in that order because KG6 is the latest i tried and has proven to give me better coverage but its still really bad..
I can connect to data but only outdoors or only when the reception is full bars, if i start to lose any bars there goes my data connection and i can no longuer use any services data/sms/mms/calls i literaly cant do anything..
This is a big issue as i know for a fact that you dont need a data connection to send sms. but it seems the galaxy s2 under the current modem firmware im using KG6 wont allow me to unless im on full data coverage...
My question is this, what is the best modem firmware to use according to the frequencies that i meantioned earlier 1900/850 WCDMA i dont mind using another country's modem as long as they are oriented towards the same frequencies that i need
My phone came from Korea and i know they use 2100/900 could that be the issue? Is my hardware oriented towards that? At this point anything could help and please feel free to post thanks
SL.
What is the model # of your phone?
Sent from my GT-I9100M using XDA App
GT-I9100 thats my model
im using
PDA: I9100XXKG6
PHONE: I9100XXKG6
CSC: I91000XAKG6
Hmm, I'm a SGS2 owner on TELUS as well and haven't had any problems so far, besides the GPS Lock Time which most people seem to complain about. It takes about 1 minute for the GPS to lock for me, but my data is fine. No dropped calls or sms problems here. My download speed as I checked last was at 8.31 Mbps down and about 2 Mbps up.
But again, having horrible GPS issues. Wish I could figure that one out
Sobai can u post your results to *#1234#
so i can compare my settings to yours.
I'm using KG6 on Rogers network and don't have fantastic reception either. For most situations it holds calls -- but buildings with lots of concrete I lose the signal completely. It's as if I'm not truly on the 850 band ... my G1 had the same problem until I flashed a Bell-specific modem, that solved the problem. I guess we'll have to wait until Bell launches the G2 here, we'll be able to swipe the modem again.
i have an imported gs2 that i am using on rogers and it doesnt drop calls, but i have had times in the past when it would show 3g but not download any data. once i turned airplane mode on and off data would work fine again. the best radio for me has been the kf2 modem in terms of not having the data stalling issue. i find that even if i show no bars of strength i can still download data with no issue.
if you are on telus i would make sure so set the wireless settings to 3g only so the phone doesnt try to look for a 2g signal.
KG2 on a Bell SGS2 on Rogers/Fido network in Vancouver.
GPS locks in seconds. no dropped calls. H+ all the time, never once saw a 3G symbol. no data dropouts.
over 7Mbps down on this network with the SGS2, when i had 1/3rd the speeds an HTC Desire. great reception in my office downtown, my apartment, everywhere i've been so far.
KG2 (not the stock canadian though), in Montreal on the Virgin/Bell network. So far no complaints on the data. Since I started messing w/ the firmware however, the connection is on 3G when idle and only switches to H+ when actually in use. From what i've been reading many people have been noticing this when flashing over the stock Canadian firmware.
On the other hand however, the GPS has been having a hard time establishing a lock (whereas it used to be quite speedy and precise before I flashed). Won`t be able to test whether this is a firmware problem untill the stock Canadian is released by Samsung.
PDA: I9100XXKG6
PHONE: I9100XXKG2
CSC: I9100OXAKG6
Sent from my GT-I9100 using XDA App
Wow guys I appreciate the feedback I thought I was the only one with this issue! I will definitely give kf2 a try right now and I'll also download the 3G only data app and give it a try and I'll get back to u guys with some feedback. Thanks again
Btw I'm using, touch x 3.2 rom that has kg5 on and I did notice a little improvement in the reception but the data connectivity is still very spotty so I'll give kf2 a try but so far kg5 modem is definitely the best one I seen so far to use on telus. Btw anyone trying to use the galaxy s2 on fido, I was never able to get 3G at all to work I was stuck on edge.
hondaguy said:
i have an imported gs2 that i am using on rogers and it doesnt drop calls, but i have had times in the past when it would show 3g but not download any data. once i turned airplane mode on and off data would work fine again. the best radio for me has been the kf2 modem in terms of not having the data stalling issue. i find that even if i show no bars of strength i can still download data with no issue.
if you are on telus i would make sure so set the wireless settings to 3g only so the phone doesnt try to look for a 2g signal.
Click to expand...
Click to collapse
Do you know how I would be able to set it up so that it stays locked on 3G? I tried the *#301279# trick and disabling hsdpa and hsupa with revision 99 but to no avail. Even if it shows full bars and 3G I still get no data connection and also I can't send or receive texts unless there is a data connection for some reason, have you guys had this issue??
sashpimp said:
Do you know how I would be able to set it up so that it stays locked on 3G? I tried the *#301279# trick and disabling hsdpa and hsupa with revision 99 but to no avail. Even if it shows full bars and 3G I still get no data connection and also I can't send or receive texts unless there is a data connection for some reason, have you guys had this issue??
Click to expand...
Click to collapse
i have never needed to mess around with that menu. you should be able to go to
settings
wireless network
mobile networks
network mode
select wcdma only
that will lock it to 3 only. if you keep having issues you might get a new sim card from telus as that might be causing you some issues
Do you have your apn configured properly for your provider? If it isnt your data definitely work. Other then that I havent had these issues in edmonton on kg6 or maybe I just dont know what to expect reception wise. I do notice it hops from 3G to hspa to hspa+ a lot so i switched to only 3g. If anyone finds anything that improves that or reception though I would be interested
Sobai said:
Hmm, I'm a SGS2 owner on TELUS as well and haven't had any problems so far, besides the GPS Lock Time which most people seem to complain about. It takes about 1 minute for the GPS to lock for me, but my data is fine. No dropped calls or sms problems here. My download speed as I checked last was at 8.31 Mbps down and about 2 Mbps up.
But again, having horrible GPS issues. Wish I could figure that one out
Click to expand...
Click to collapse
Can u post what Rom u are currently using and modem ?
sashpimp said:
Can u post what Rom u are currently using and modem ?
Click to expand...
Click to collapse
This information would be great because I am also experiencing spotty data connectivity (browser loads data, stalls, resumes centuries later) which results in severe crappy data speeds of 0.8mbps down and 0.07mbps up (done on in-browser speakeasy test and speedtest.net app.
Running VillianRom 2.4.2 on Bell's I9100M over Telus Network
PDA: I9100XXKG6
PHONE: I9100XXKG3
CSC: I9100OXAKG6
nk_blu said:
This information would be great because I am also experiencing spotty data connectivity (browser loads data, stalls, resumes centuries later) which results in severe crappy data speeds of 0.8mbps down and 0.07mbps up (done on in-browser speakeasy test and speedtest.net app.
Running VillianRom 2.4.2 on Bell's I9100M over Telus Network
PDA: I9100XXKG6
PHONE: I9100XXKG3
CSC: I9100OXAKG6
Click to expand...
Click to collapse
I wish there was a way to extract the modem.bin file from the bell sgs2 this way we could simply distibute it around. Someone should root their phone, install cwm4 and make a backup and we could simply pass the backup around so we could all have the modem
Bell modem has already been posted to the forum.
sashpimp said:
I wish there was a way to extract the modem.bin file from the bell sgs2 this way we could simply distibute it around. Someone should root their phone, install cwm4 and make a backup and we could simply pass the backup around so we could all have the modem
Click to expand...
Click to collapse
Sent from my GT-I9100 using XDA Premium App
Or flash KG6, KH1, whichever modem you please.
Sent from my GT-I9100 using XDA Premium App
I had an issue with my s2. i was stuck at Menorca airport after an 8 hour delay. i spent the firs 30mins walking around the lobby looking for wifi and got nothing.
couple hours later sat next to someone with an iphone 3g and he mentioned he was glad of the free public wifi - free public wtf I said!
Sure as it was, he could find and connect to a lounge wifi. My s2 couldn't find a dam thing!!!
I checked my settings:
Wifi was on
Network notification was on
Use packet data was on
Data Roaming was off - As I don't want O2 to screw me over.
Could it simply be that the wifi signal wasn't strong enough to get the wifi? Eventhough the Iphone 3G had three bars where I was sat?
Could data roaming someone interfere with connecting to wifi abroad?
KH3 modem improved WiFi signal i find .
jje
I'm on KF3...
Can I install one of the other variants of stock rom such as KH3?
If so I assume I need to CF-Root then overwrite with the variant stock rom/kernel I want?
And then CF-Root again the new variant stock rom/kernel?
Yes, the SGS2 has not-so-good wifi signal. Sometimes I can't get a full signal when I'm 2m away from the router. Nevertheless, I've found places where my phone was connected, and other devices couldn't, so it's not that bad. I'm also on KH3 modem.
wibbsy said:
I'm on KF3...
Can I install one of the other variants of stock rom such as KH3?
Yes
Stock Roms .and csc
http://forum.xda-developers.com/showthread.php?t=1075278
If so I assume I need to CF-Root then overwrite with the variant stock rom/kernel I want?
NO
stock rom KH3 Followed by KH3 root .
jje
Click to expand...
Click to collapse
i thought this would be the best place for a problem i started having about2 weeks ago. i am on vodafone uk.
i used to get 3-4 of the 4 bars reception while sitting at home(as an example). suddenly i was getting 1-2 and sometimes none (all blank).
i thought i would try and eliminate things one by one so here is what i did...
checked with my sim in another phone and another sim in mine. from memory the other phone having my sim was slightly down but not much and my phone with the other sim didnt really change much.
i checked with vodafone by calling them, they said they couldnt see any problems on the network, birmingham uk, but would send a new sim, after getting the sim activated when it arrived, no better. their onling forum is still waiting for a response back from their technical whether there is any problems. i dont see how the phone department can instantly tell me when the technical need many days to find an answer.
i thought it could be the rom so i first updated lite'ning rom to resurrection remix and then to a later version of RR and no change. the newest version of RR has a different kernel, flux i think, than the siyah in the 2 previous roms but again that different kernel didnt improve it. lastly i even changed the modem/radio trying to different ones to the default, xxlpx and kh3 and again no difference.
the only thing that improves it is turning 2G on instead of 3G. the bars go back up to 3-4. even with 3G on previously as i never changed it before it was always fine.
i know this is a long post but i wanted to be thorough as i really appreciate any help as i am now lost as what could improve this.
Mispost
anyone?
I have been having a similar problem on Three for about five weeks now. Despite numerous reloads of Android and modems etc I was getting no results, 5mb dl speeds have dropped to around 150kb despite having a good signal.
After many many calls to so called customer service I have discovered that a new cell tower near to me has been activated as part of the network expansion program and because this cell is closer to me than the one I used to connect to I now get a stronger signal from this so my phone always chooses this. Problem is this cell has only got a 2mb feed INTO it, its a TMobile/Orange cell now being shared with Three....so I am basically fooked.
Check with Vodafone if they have done anything similar recently near you. Three are adamant there are no problems my end, technically they are correct I suppose, its all working, I just cant access the net without it timing out constantly now.
Atb
SST
I am having the same issue with my phone. I get only one bar (sometimes none!) whenever I'm home & I'm on WiFi; however, I get full signal strength when I'm out & on 3G.
Sent from my GT-I9100 using XDA
i thought it could be the cell tower thing as there is only 1 vodafone one in quite a large radious, about 2 miles, and many of all the other networks. i dont know why vodafone are happy to have 1 compared to at least 3-4 each for all other providers.
this morning i drove that 1 mile to the vodafone mast and ran fresh network and surely that would have connected to that as i was 5 meters from it. still no better. ??
Just try NELP3 modem once... I had done similar issue once.. Now my network is better..
is nelp3 okay for uk though?
Try flashing another Modem. Im from Germany but i had similar problems. A new Rom would do too i think
All
Sent from my MB525 using Xparent Cyan Tapatalk 2
Christiancs1969 said:
All
Sent from my MB525 using Xparent Cyan Tapatalk 2
Click to expand...
Click to collapse
not sure what you mean with 'all'
Number of options, tower may be having problems, maybe some form of interference, try a different modem, try different sum card if you have one spare?
Sent from my GT-I9100 using xda app-developers app
i do have the same problem as above, no signal in the building and 50% signal outside building. I swithch my SIM with fren's (he use another telco), and his SIM not work on my S2 and my SIM work on his phone (not SIM issues).
I tested many modem as recommented , LP2/LP3, LP9, LPX, KI3, KI4, KF2, no luck.
I flash different ROM, (some old version that work before), from CM9, AOKP, Sammy. no luck.
I restore old back up ROM. no luck
Fix permission, no luck.
any advice ?
OK next step is to flash a different modem
Sent from my GT-I9100 using xda app-developers app
i've tried a few modems including the ones people believe better, all have this problem so far.
it may be the network mast in my case. i discussed with vodafone what 3G mast i was connected to and then which 3G mast is next closest. i then went right next to that other 3G mast and the signal was full bars, no fluctuation at all. this surely means it is either, 1-the network mast i keep locking to having problems or 2-all the modems i have used favouring battery over strength and not getting enough power to get a good signal.
is there a way of finding out which modems are better for battery and which are better for signal strength?
Umm not that I know of, best thing to do for that is either research the modems for better strength or battery etc, or just test some yourself, however that is time consuming,
Personally I think it is just the mast having problems, however I may be wrong
Sent from my GT-I9100 using xda app-developers app
i thought i would add a little research to this thread, not too much but just my experience with 3 specific modems.
the background is that recently i have started getting very poor network signal as i believe the closest 3g mast to me is having problems. if i turn to 2g its better as the phone then connects to the closest 2g tower which gives better network signal.
i know that a modem should be left for 2-3 days before judging but i thought that if a modem is currently better than another then that is only likely to stay the same with time as long as they were given the same short period of time.
i used the app network signal info and did 3 5 minute tests for each modem and then averaged the percentage of the signal and also averaged the -dbm also.
i first used the modem i currently had on there, BUKI1
- average percentage was 19%
- average -dbm was -103
both very poor scores
the signal was very jumpy up and down also
i then flashed the custom modem, i think by krs007, M250S
- average percentage was 44.6%
- average -dbm was -90.66
obviously a huge increase
the signal was very steady, hardly changing from that average
lastly i flashed NELP3
- average percentage was 30.66%
- average -dbm was -97.33
better than at first but not as good as M250S
i am now going to let M250S bed in for a few days while keeping my eye on here for how NELP4 performs but so far i have a huge increase in signal in a previously very poor area. as this is also due i believe to the tower having problems, hopefully it will only get better.
Try downloading OpenSignalMaps from Google Play Store. For starters, you can determine the approximate location of the offending cell tower (if the cell tower was indeed the culprit). Sometimes, i realise that the phone tends to stick to certain cell towers when others are in closer range and could purportedly provide a better radio link. For this, the app provides a refresh feature that allows you to manually trigger a cell tower refresh. I am aware that most apps requiring connectivity have this feature but i don't suppose you can call the refresh on trigger.
Hi Marc
Tracked down a copy of M250S(dont know if its the same as you have installed though), and very briefly, as in 30 secondsish, I had 4 bars and dl`s around 5mb again!.But midway through it dropped out and that seems to be the pattern. Seems to be having problems locking onto a cell, signal bars frequently grey out, maybe its a compatibility issue with CM9, I dont know.
Anyway, let us know how you get on,
Cheers
Chris
it probably is the same as i dont think any others have that name.
it probably just needs to bed in for a few days. i have noticed mine go between 3g and H quite regular but it always does that, i havent had any dropped calls or similar so far.
I started flashing custom roms to my current phone 2 years ago, but now it started to bother me about my data connection. When I was in stock, I had a very reliable data connection (4G I believe). However now, it does not even connect to 4G. Is flashing a custom ROM (originally GB, now JB) affecting my data connection? This bothers me a lot as whenever I'm not in wifi range the internet becomes very unreliable, especially when using it with GPS.
Another potential related topic is modems. Is that really related to my problem? How do I know if I have an updated version?
Settings, about device, baseband version is your modem. Different roms will flash different modems. If you used to get good connection, then you flashed a rom, and now you don't the modem could be the problem. Try a different modem. Flash it and use it a day or two before you flash a different modem as it may take a day or two to settle in. If after a day or two you are still unhappy flash a different one and try it out. For me in my area I prefer UCLE5, but you may operate better under a different modem.
Kirasagi said:
I started flashing custom roms to my current phone 2 years ago, but now it started to bother me about my data connection. When I was in stock, I had a very reliable data connection (4G I believe). However now, it does not even connect to 4G. Is flashing a custom ROM (originally GB, now JB) affecting my data connection? This bothers me a lot as whenever I'm not in wifi range the internet becomes very unreliable, especially when using it with GPS.
Another potential related topic is modems. Is that really related to my problem? How do I know if I have an updated version?
Click to expand...
Click to collapse
Two answers.
1. Yes, different firmware loaded with different modem will affect your mobile connection. If you know your original modem, then reflash it again.
2. How do you know that it was 4G? Based on tested data rate or just purely depended on the little 4G icon showed on the status bar?
Just fyi, SS stock ROM always indicates 4G even though it's not 4G rate while the custom ROMs such AOKP does indeed displays the correct mobile speed.
I've recently moved to Hampshire, UK and got myself a Vodafone simcard. This problem probably existed already prior moving to UK but wasn't as noticeable as phone networks were a lot better in Finland and Czech Republic where I lived before. I often notice my signal being non existent or very low when other people with Vodafone but different phones have ok to good signal. I often also notice that according to the phone it has a HSDPA connection but no data is being transmitted, but immediately if it jumps to HSDPA+, data is being transmitted flawlessly again. I'm running the latest stable CM 10 on my phone. Additionally there seems to be similar issues with WIFI, other phones show good signal but mine doesn't.
Any ideas what could be the cause? Is the reception in S3 just worse than in my old Nokia E71 or Iphone5? What really puzzles me is the not working data connection with HSDPA, sometimes moving few meters might make it jump to HSDPA+ and data again transmits normally.
First go back to full stock rom, latest uk generic firmware and modem to test.
It's more likely to be due to your rom than hardware.
I've tried few different stock roms but the same problem seems to be present, still shows that I'm connected with HSDPA but no data is being transmitted. Any other ideas?
Check APN settings correct modem and CSC .
Would any of these affect the wifi aswell?
LtnKowalski said:
Would any of these affect the wifi aswell?
Click to expand...
Click to collapse
No the wifi is kernel .
JJEgan said:
No the wifi is kernel .
Click to expand...
Click to collapse
Modem, CSC and APN were all correct. My problems are with both wifi and phone network, could the problem be physical? Doesn't kernel come with the firmware, or should I try with another kernel?
You can flash a kernel or modem separately or as part of a whole firmware.
If you've tried going back to stock then hardware is the most probable cause.
Sent from my GT-I9300 using Tapatalk