Develop Bugs

What is there that could help with cellular reception

I just received my GN today and my cellular reception is real weak avg 110 dBm. I have been trying to find anything about increasing signal strength but without any luck. Is there any fix out there?

What carrier? Does it just have consistently weaker connection when compared to another phone on the same network next to it?
You can try flashing a different radio. Mixed results for most.

I am on Verizon with the i515 GN in Michigan. Are there ones I should try first Radio wise? I also have the MiFi 4510L and it gets near perfect reception.

Also available on some networks are signal boosters, check with your provider

Yeah Verizon has a femtocell, they call it the Network Extender, but its $250. It uses your home broadband to fabricate a network in your house.

I was thinking more along the lines of an update to the radio or what not.

zedorda said:
I was thinking more along the lines of an update to the radio or what not.
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Oh, okay. You could try an update to your radio.

I'm having weak signal too. Bell Canada. :/
I'm using kang b29
Sent from my Galaxy Nexus using XDA

Like some people have said: flash a new radio. What specific radio however, that depends on your phone. One radio might play nice with someone's Nexus, but might be cheap with yours. Flash and try to see which ones are good. You can find them in the Development section. XX are for Europe and UG is for North America. Both played nice with me, but UG was slightly better.

So the Radio is the only flash/adb software that effects reception?

Galaxy Nexus - drops hspa connection+Radio?

I bought my GNex and it was preloaded with 4.0.2 and XXKK6 modem. suddenly after some woes in my GSM network provider i got the baseband as unkown and no signal. whenever i flash to any other modem it works and the device reports the correct baseband and imei.
Why only modem XXKK6 gives me uknown baseband and no signal while others works.
right now i am having another modem but i set it always to 2G as 3G drops every second even in best coverd 3G area.

yep, exactly my problem... and i don't have a clue! =o\\\
oh, and if you leave it a while signal come back after some minutes...

Strange Antenna Issue

Today my phone started having some issues.
In places I was supposed to get full coverage and all bars I am know getting only 2 bars...
And in places I was getting 2 bars I get no signal at all !!!
I think it is an Antenna thing. Maybe it is broken, IDK...
What could I do? I have no warranty as I bought this phone 2 months ago in EUA and I live in Brazil...
Thankss

Anyone?? Help??
I've opened my phone and Everything seemed to be clear and OK.
One thing. When I get signal and start using the 3G a lot. The Signal DOES NOT go off.
This is very strange...

liquelt said:
Anyone?? Help??
I've opened my phone and Everything seemed to be clear and OK.
One thing. When I get signal and start using the 3G a lot. The Signal DOES NOT go off.
This is very strange...
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Click to collapse
Have you tried flashing the latest radio for the nexus? New ones were released recently for the .9 and .10 radios for verizon nexuses. I do not have knowledge of the gsm radios though.

Tempest228 said:
Have you tried flashing the latest radio for the nexus? New ones were released recently for the .9 and .10 radios for verizon nexuses. I do not have knowledge of the gsm radios though.
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I am not on verizon.
I am using i9250UGLH1 radio.
Where can I get this .10 radio?
Thanks.

I'm also having the same issue. I have a maguro yakju variant galaxy nexus. I'm getting only 1-2 bars and have no warranty as I got it from ebay, gps is also showing problems, but the phone came in new sealed condition. Please let me know if there's a fix to this

It seems to be an Power Amplifier issue. I am gonna put in a Repair Store and they are going to try to fix my phone.
I am going to keep updating this too with the progress.
Thaaankss

What were the dbm stats? Your signal bar never tells the truth unless there is no service at all.

the signal bars are responing to dbm status.
I am checking both on the same time and I didnt get any anomalies betweent them...
I just put the phone to work in a place near home and they said it was an Power Amplifier issue and they're going to try fixing it.
Thanks.

I have exactly the same problem but my phone has only dealer warranty. Is there any chance to fix this through software?

If you have this exact same issue you cant fix it through software, because its an hardware problem...
It should be an hardware thing, if it isn't I don't know what else I could do.

Just updating...
My phone is now working. They changed the PA ( power amplifier) and now I have normal signal!
BUT, I am having two issues.
When I select "only use 2g networks" the phone than changes to edge and connects. When I deselect the 2g option the phone reconnects but it keeps on 2g. It does not switch to 3g...
I have to reboot the phone/radio.
AND,I am not getting 4G HSPA+ anywhere! Only HSDPA...
ANYONE????

Today I also have noticed problems with connection. I've very fresh GNx, had it with me at the office since Monday but today whole day was on GPRS. I thought it is an issue from the GSM network but after coming home where 3G should fly (and it does on Motorola Defy) my GNx was still on GPRS.
But when I make a call the data connection returns to 3G and some time after switches back to 2G.
If I leave phone somewhere where is better coverage it keeps 3G.
Meanwhile my Defy has 3G everywhere.
Shall I sent the GNx back to Amazon?

QDT said:
Today I also have noticed problems with connection. I've very fresh GNx, had it with me at the office since Monday but today whole day was on GPRS. I thought it is an issue from the GSM network but after coming home where 3G should fly (and it does on Motorola Defy) my GNx was still on GPRS.
But when I make a call the data connection returns to 3G and some time after switches back to 2G.
If I leave phone somewhere where is better coverage it keeps 3G.
Meanwhile my Defy has 3G everywhere.
Shall I sent the GNx back to Amazon?
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Click to collapse
Man,
If you are in warranty you should return your phone for them to fix/change...
Try changing radios before doing that. It can be software related!

liquelt said:
Man,
If you are in warranty you should return your phone for them to fix/change...
Try changing radios before doing that. It can be software related!
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Click to collapse
I'm on the same radio since beginning. And the same ROM was while phone kept 3G and now, when it is loosing it.
However, I wonder how much the network could influence the situation.
I've left overnight Nexus and Defy on the strongest coverage point and in the morning GNx was still at GPRS while Motorola switched from 3G down to GPRS.
I'm getting paranoid (and not talking about ROM). Restored phone clean via fastboot to factory state. Will be watching it over weekend and then decide what to do.
8 hrs later.
Phone kept weird for few hours at work and now flies with full range 3G. Also at home where yesterday it was switching to 2G.
I bet this was Vodafone way to thank me for cancelling my contract.
Gonna keep it at pure stock for an hour or two and then will change to some custom ROM... Maybe.

Updating again.
I've been testing my phone with the new "Power Amplifier" and now I can use my phone regularly.
The problem is... The phone does not support anymore the frequency of 850Mhz neither 3G or 2G.
I THINK they have put a PA that does not amplify this frequency.
My carrier uses: 2G:900/1800 3G:850/2100 3.5G(HSPA+):850Mhz mostly
So I understood why in some places I dont have any 3G coverage and in almost all places I can't get HSPA+ speeds.
Am I correct? Does the PA has to do w/ all this frequency thing?

[Q] Galaxy S3 Reception issues. (Rogers/Telus)

hey guys
im in the pickering-scarborough area and my reception sucks. my wifi drops a lot and my signal is weak
i would have returned it but i got this phone second hand and it was originally telus but i unlocked it
when im downtown i get pretty good reception but it still depends on the area that im in.
when i had my iphone 3g i had good reception at home but now i dont
does anyone have any suggestions on apps to help with signal reception. i dont care about wifi, just reception.
I have fresh network but its not that great.
also, are other galaxy s3 users in the gta experiencing reception issues?

bengali548 said:
hey guys
im in the pickering-scarborough area and my reception sucks. my wifi drops a lot and my signal is weak
i would have returned it but i got this phone second hand and it was originally telus but i unlocked it
when im downtown i get pretty good reception but it still depends on the area that im in.
when i had my iphone 3g i had good reception at home but now i dont
does anyone have any suggestions on apps to help with signal reception. i dont care about wifi, just reception.
I have fresh network but its not that great.
also, are other galaxy s3 users in the gta experiencing reception issues?
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Click to collapse
try factory default might help

totti107 said:
try factory default might help
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Click to collapse
factory default what?
im currently running cm10 nightlies (also any suggestions on better roms are appreciated)
i just updated my modem to the rogers basband one. i dont know which one it was before but im testing it out now.

So are you on Rogers or Telus? Because with Rogers, running stock LH1, inside my house I get 3bars on 4G if lucky, my room is the only place at home where I get LTE if at all.
Sent from my SGH-I747M using xda premium

LH1 for Telus is your best bet... Others modems don't connect... Well it depends.. Won't connect with the I747 without the LH1 modem here in Quebec.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

howlingmoon12 said:
So are you on Rogers or Telus? Because with Rogers, running stock LH1, inside my house I get 3bars on 4G if lucky, my room is the only place at home where I get LTE if at all.
Sent from my SGH-I747M using xda premium
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Click to collapse
im on a rogers plan with a telus phone but i unlocked the phone which is why i can use it on my rogers plan
right now im on the mvllh1 modem. do you guys have suggestions of a different modem to use given my area?

You checked "Yes this is a question"
Guess where it belongs?
Moved to Q&A
FNM

http://forum.xda-developers.com/showthread.php?t=1794927
Oddly enough, he's in the Scarborough area too. Could be a combination of phone + network.

Look into changing your settings under Mobile Network. Network Mode should be LTE/GSM/WCDMA. Also check your APN's for Rogers LTE. Lastly check your Phone Information by dialing *#*#4636#*#*, select Phone Information and change the setting to LTE/GSM auto (PRL).
I was having similar issues when i first installed CM10. It seemed to work after i played around with these settings. I also live in Scarborough and almost always have LTE.
Cheers

XyrusX said:
Look into changing your settings under Mobile Network. Network Mode should be LTE/GSM/WCDMA. Also check your APN's for Rogers LTE. Lastly check your Phone Information by dialing *#*#4636#*#*, select Phone Information and change the setting to LTE/GSM auto (PRL).
I was having similar issues when i first installed CM10. It seemed to work after i played around with these settings. I also live in Scarborough and almost always have LTE.
Cheers
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Click to collapse
Thanks. This did help a little bit. I get 3 bars in my room now but when im at my friends house it still struggles between 0 and 3 bars but majority of time it sits at 2 bars
How do i thank?

How do I re-enable LTE

Hey all! Ok, so my gf has had this S2 from Koodo (Telus) since January. Out of the box it came with LTE/4G enabled and working fine. However, I rarely leave things alone and right away I installed TWRP, AOKP and I think, Tiberius Kernel. Have been using variations of each since. However, ever since I did that, the 4G hasn't worked. In the phone settings it says LTE/GSM Auto. However if I change it to anything else, like LTE ONLY, for example, it just stays at LTE/GSM auto. Nothing happens. So I am wondering how to get her 4G to work again since I know it is fully capable of it and my area does have working LTE.

santeana said:
Hey all! Ok, so my gf has had this S2 from Koodo (Telus) since January. Out of the box it came with LTE/4G enabled and working fine. However, I rarely leave things alone and right away I installed TWRP, AOKP and I think, Tiberius Kernel. Have been using variations of each since. However, ever since I did that, the 4G hasn't worked. In the phone settings it says LTE/GSM Auto. However if I change it to anything else, like LTE ONLY, for example, it just stays at LTE/GSM auto. Nothing happens. So I am wondering how to get her 4G to work again since I know it is fully capable of it and my area does have working LTE.
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The t989d doesn't have lte. Doesn't have the hardware for it.
Sent from my cell phone telephone

Ok but my mother has the same phone (got them each one) but I haven't touched that one and it says 4G by the signal bars... Why is that?
Sent from my Nexus 4 using xda premium

santeana said:
Ok but my mother has the same phone (got them each one) but I haven't touched that one and it says 4G by the signal bars... Why is that?
Sent from my Nexus 4 using xda premium
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Click to collapse
4g is the same as H+ on custom roms. And now some say DC. Not sure why they left behind the 4g symbol, but its all the same thing. So if you see H+, DC or 4g, its all actually 4g.
You should be on GSM/wcdma preferred in mobile settings.
Sent from my cell phone telephone

kj2112 said:
4g is the same as H+ on custom roms. And now some say DC. Not sure why they left behind the 4g symbol, but its all the same thing. So if you see H+, DC or 4g, its all actually 4g.
Sent from my cell phone telephone
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Oh ok! Thanks!
Sent from my Nexus 4 using xda premium

I have sorta the same problem, except I have a tmobile s2 t989. I flashed cm 10.1 nightlies and the newest radio. Phone works good except my phone no longer shows the 4G symbol above the signal bars. It instead says 3G. Before rooting it said 4G above the signal bars. Every once in a while it says DC. Any advice?

iMacMane said:
I have sorta the same problem, except I have a tmobile s2 t989. I flashed cm 10.1 nightlies and the newest radio. Phone works good except my phone no longer shows the 4G symbol above the signal bars. It instead says 3G. Before rooting it said 4G above the signal bars. Every once in a while it says DC. Any advice?
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Click to collapse
Explained the symbols in posts above. And if you are getting a lot of 3g....that's reception. Your losing your 4g connection and its picking up 3g. Usually for this to happen you'd only be getting about 1 bar on your signal.
Sent from my cell phone telephone

kj2112 said:
Explained the symbols in posts above. And if you are getting a lot of 3g....that's reception. Your losing your 4g connection and its picking up 3g. Usually for this to happen you'd only be getting about 1 bar on your signal.
Sent from my cell phone telephone
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I appreciate the info. I live in Orlando and I'm pretty sure we have tmobiles 4g or hspa+. I was just wondering why I'm only getting 3G date speeds instead of 4G speeds. The internet still seems relatively fast but wanted to make sure the phone wasn't slowing down the speeds to 3G speeds.

iMacMane said:
I have sorta the same problem, except I have a tmobile s2 t989. I flashed cm 10.1 nightlies and the newest radio. Phone works good except my phone no longer shows the 4G symbol above the signal bars. It instead says 3G. Before rooting it said 4G above the signal bars. Every once in a while it says DC. Any advice?
Click to expand...
Click to collapse
Aosp ROMs run on 3g (umts) until data is called. Once data is called it will pull up h+(hspa+)or dc(dc-hspa) depending on your area. Its a battery saving feature and the stock Samsung ROMs show 4g all the time. Unless on edge or GPRS. I think even touchwiz ROMs went to umts while idle.
sent from my t989 hercules