hey guys
i tried understanding by myself what exactly the modem does in a cellphone but since the term/word modem is so common it was hard to get results for the exact thing i want to understand.
my reception issue is this:
im from israel in a network called "Golan-T", using my previous phone, a nexus 4, i had great internet access and cell reception, 90% of the time i had 4/4 bars and the internet was H+ with speeds of 5-10Mbps (normal speeds here in israel)
now on my nexus 5, im there is a constant issue with the above
the bars go from 2-3 RAPIDSLY, meaning they could switch between 1-3 bars every 2-5 seconds, which i suspect not only means a terribly low signal, but also destroys my battery life
2nd, for some reason i NEVER get H+, but i assume the icon for + just might no be there in the nexus 5, but i get the same every few seconds change cycle with 3g (which gives me speeds of under 1MBps and i cant do ANYTHING not even google now searches) and H, which also changes every few seconds.
yesterday i drove for over an hour with Waze and didnt have internet for even 1 second.
so - after the above long story
i was wondering what could be a solution and someone tossed my way that the modem could be the issue and that it can be flashed, so i was hoping i could get some guidance here
ty!
http://forum.xda-developers.com/showthread.php?p=47164660
The modem handles all cellular connections much like old internet dial up modems. Its what connects y you to your phones provider.
When it's referred to on xda it's most commonly talking about the radio firmware. Something which can improve or worsen signal depending on what has been changed in the revisions to it.
However your problem sounds more like an antennae issue than a modem problem.
Usually the radio only gets updated with an ota or factory image flash.
If you want to test you can flash the various factory images from Google which also contain the radio's or you may be able to find a collection of radios here on the forums to flash.
The factory images are flashed by using the flashall.bat included in the download. (Bare in mind this will also erase all data on your phone)
The radio images in the forums will usually be flashed in the bootloader with fastboot using the command
Fastboot flash radio xyz.img
Where xyz is the name of your downloaded image
Sent from my Nexus 5 using xda app-developers app
Related
Hi there,
I'm using Revolution HD 3.6.1 with its radio and relative RIL (which becomes with the rom by default). Obviously I have S-OFFed and rooted.
I'm experiencing some hiccups in 3G data connections. I don't know if it's due to the carrier (Wind Italia) or something in the phone (maybe the radio doesn't support it at all?). I'm in Europe, precisely in Italy.
Maybe should use an european version of radio? Or what?
In detail:
I activate data connection. The phone shows 3G before, and quickly goes in H (HDSPA). Then I use many apps that needs internet connection. Within a short time it goes again in 3G and i have absolutely NO data connections. After a delay of 5-10 sec it goes again in HDSPA and everything works. When it goes again in 3G i have no data, then again H and data working.
What's the problem?
EDIT: Problem solved! See in this post.
P.s.: Sorry for my bad english
I was going to ask about something similar to this, so rather than start a thread I will post it here. I too am running the 3.6.1 with its radio, S-OFF, & rooted.
What I am seeing on boot up is the standard progressive upgrades of data networks (just bars, then 2G, then 3G, finally H). The H only stays for a few seconds then drops to 3G and basically stays like that. However, as soon as I open an internet requiring application, it jumps to show H and typically stays that way as long as a data connection is active. My Speed Test results show its 4G speeds (same as stock ROM and radio) when its showing the H, so obviously its working, I'm just wondering if its intentional that the display only shows 3G? Or maybe its set so the ROM "relaxes" on 3G, but switches to 4G when data is actually being sent/received?
~T.J.
Maybe you used to have a 'background' app updating constantly.
The G, 3G and H usually depends on the signal in your area, the H is usually for high data transfer. If you're not using the internet,downloading anything or updating anything on your phone, then why would you need it on all the time?
3g is usually the norm, so I wouldn't worry!
For my issue, my stock ROM showed me what was available in the areas as I moved around, including showing 4G all the time if I was in a coverage area (which pretty much everywhere around me is). If I moved out of the 4G area for instance, it would drop to show me 3G.
This one just shows 3G all the time, even when I'm in areas I KNOW are 4G; UNTIL I use the data connection, then it switches and shows the H. I know its silly, but I liked actually gauging my providers service by being able to see what kinds of connections were available in various areas.
The fact I have to actually open the browser or run a speed test to see if 4G (H in this case) is available in that area is a little odd to me, why doesn't it just show the connection that's available?
~T.J.
Guys, I found a solution to my problem, googling around. That's awesome.
FYI I'll post here:
1. dial *#*#4636#*#*
2. Go to phone information
3. Toggle ciphering so it's off
4. Turn off radio
5. Turn on radio
6. Toggle ciphering back on
It seems to be working to me. An half hour without hiccups till now.
I have had this problem ever since my hd2 two years ago. I thought it was normal. I'm about to try the fix. If it fixes it you are a life saver.
Sent from my HTC Sensation 4G using XDA App
Aww man same thing. Maybe its supposed to be like this.
Basically for me its for example on the xda app when ill refresh something it will always say processing as soon as the 3g symbol turns to h with both arrows on simutaneously.
Maybe that's how its supposed to be idk.
Sent from my HTC Sensation 4G using XDA App
Glad its not only me!!!! This is a problem. I am in the U.S and i have it also. Ive been trying to figure it out. I have radio 10.15.9035.2_2 and bricked kernel 1.2 i can not figure out if this started happening from when i flashed the lastest radio or when i went with bricked kernel above 0.91 i am still trying to figure it out. *#*# 4636#*#* is only a brief temp fix i know that much. But lets try and put our heads together and get to the bottom of it. Cause its been slowly pissing me off daily. Let me know what you guys hear. And i will keep you updated as well. Please pm me if you here anything on the issue. Thanks!!!!!
Sent from my HTC Sensation Z710e
Xx12thANG3LxX said:
Glad its not only me!!!! This is a problem. I am in the U.S and i have it also. Ive been trying to figure it out. I have radio 10.15.9035.2_2 and bricked kernel 1.2 i can not figure out if this started happening from when i flashed the lastest radio or when i went with bricked kernel above 0.91 i am still trying to figure it out. *#*# 4636#*#* is only a brief temp fix i know that much. But lets try and put our heads together and get to the bottom of it. Cause its been slowly pissing me off daily. Let me know what you guys hear. And i will keep you updated as well. Please pm me if you here anything on the issue. Thanks!!!!!
Sent from my HTC Sensation Z710e
Click to expand...
Click to collapse
Only a brief temp fix? Are you sure?
I'm not having the same problem as before, now. I hope it remains still as it is.
I have no idea how this happened, but here goes explaining it. I was running latest Cataclysm Rom w/ latest faux kernel. I was browsing the web through LTE when I wanted to SMS someone. After a few minutes the SMS failed. Then a few minutes later I got no signal. Restarted, Got LTE although under service state it says out of service and unknown mobile network type. After 20 seconds Got no signal, this happens every time now when I restart. Flashing back to factory settings didn't fix anything. I am now very bummed out. I don't think it's the carrier (aio) since if there were a service outage anyone with AT&T would have problems too. There's also the possibility that the magnet on the name tag to my work shirt could have very well played a part, although I doubt it since I don't hold the phone that high. I contacted Google on their support page, but I probably should look into LG's warranty, which likely won't cover it. So....
How can I fix my radio?
If I can't fix it within my means, how can I get it fixed?
Are you able to add an APN?
Your cache.img could be corrupt. Try and flash the stock cache.img from the stock image.
Synyster06Gates said:
Are you able to add an APN?
Your cache.img could be corrupt. Try and flash the stock cache.img from the stock image.
Click to expand...
Click to collapse
Hmm. Here's the weird thing though - when I first got my phone to a carrier I would have service, but no internet access when I didn't add an APN. In the phone's state that it was in, I already flashed the APN like normal and worked. But now, it has no signal to work with, so even adding an APN would be pointless if it isn't connecting to -any- network.
I ran wugfresh's nexus root toolkit to run the complete stock process. I even re-locked the bootloader in case I have to ship it somewhere. Watching the stock flash process, I did see it flash everything without failiure from the official 4.4 stock image, but didn't fix it. I'm starting to think it's a hardware failure, since the radio does the same thing every time I reboot it regardless of what rom, kernel, bootloader, baseband, etc. I throw at it (connects to LTE for a few secs, goes into no signal).
What other options could I do to remedy this?
EDIT - Google has already responded and sounds like they could send me a replacement device, not certain yet but here's hoping.
I'm experiencing this same issue you described in your previous post. I think there's an outage in Northwest Ohio for Aio Wireless, or AT&T altogether. I don't see anything on twitter or google, so I'm not sure if it's just me, or it is affecting many users. I noticed it when I was on a phone call with a family member and the call dropped. When I tried to call back, my signal kept bouncing between LTE to no signal, back to LTE, and no signal. Now it says I don't have anything at all. If I search for mobile networks, it reconnects me to LTE and I can surf the web, run speed tests, but if I try to SMS or call someone, it drops my signal again.
I'm thinking the network is down for voice, but not so much data.
Did you try flashing your carrier's radio?
Team Nexus 5 sucks
Hi everyone.
I owned a Nexus 5 one month ago, but unfortunately, it does not work as expected. On 4.4.0, I had multiple issues concerning network already (unable to switch to 3G networks only, very variable HSPA signal reception (from 4/4 bars to Edge exactly at the same place), ...). This issues were supposed to be fixed with 4.4.2 and most of them are, excepting HSPA signal which is still very weird. However 4.2.2 brings my phone another issue that I didn't noticed on 4.4.0 which is a very annoying and repetitive complete signal blackout (no reception at all (Edge/HSPA), even for emergency calls I guess). Signal drop can happen twice in an hour, twice in 10 minutes or may not happen at all 3-4-5 hours long. It's completely unpredictable. After a while, Edge signal (not HSPA !!) gets back by itself. If I wait 10-20 more minutes, HSPA comes back again, until it drops again.
Moreover, at phone boot, just after typing my PIN Code, it usually takes 2 or 3 minutes to catch a signal. Very slow isn't it ?
It does not seem to be a network issue, since my Samsung Galaxy S III doesn't encounter this using the same SIM card.
I read on Google forums and probably some XDA threads that I was not the only one to face this kind of network issues, even on 4.4.2, but issue description was each time a bit different from mine, thus I tought that it may be useful to post a new thread to describe precisely what was my problem.
Edit : My Nexus 5 is unlocked and rooted, but issue is present on untouched 4.2.2 also.
Edit 2 : http://forum.xda-developers.com/showthread.php?t=2525583 is probably my issue.
Do no hesitate to answer if you're thinking that you have the same issue (or kind of) or if you think that you know something that may help.
Thank you .
KennyG9
You can flash the radio from version 4.4 that helps a lot, I'm at work just search this forum the directions are here, it's easy.
Sent from my Nexus 7 using Tapatalk 4
^^ He appears to be talking about the link below. You can flash different modems that may work. Some people say different modems helped but I've had no such luck. I've flashed every modem available and still don't have data almost everywhere I go. I have data at home but that doesn't really matter since I don't need my phone at home.
http://forum.xda-developers.com/showthread.php?t=2514095
Did you try flashing your carrier's specific radio?
Team Nexus 5 sucks
dicecuber said:
Did you try flashing your carrier's specific radio?
Team Nexus 5 sucks
Click to expand...
Click to collapse
Were would one find the carrier specific radio? I'm on T-Mobile but have only found the thread with modems. Nothing carrier specific.
Thanks for your answers. Unfortunately, flashing different modems does not seem to help .
i've read, the .15 is good with t-mobile.
i'm testing it today too. my problem is not only a signal drop, i have only edge too and my modem won't switch back to umts or hspa(+).
i'm in germany with t-mobile (congstar).
Hello everyone. I was hoping that some of you that are more knowledgeable about this stuff could help me out here. I recently flashed from CM 10.2 to KitKat (4.4.4), which everything went smoothly for the most part. However, I've noticed that my phone constantly has no service. I should probably state that I live in an area with very low service to begin with, but prior to the flash I was able to get at least a bar inside my house. Now, I'm unable to get anything.
The first thing I could think of to check was my settings in the phone. The data is enabled, CDMA Roaming mode is set to automatic, CDMA subscription is set to RUIM / SIM, and the Preferred Network Type was Global. I wasn't familiar with the global setting as I was used to seeing the LTE / CDMA / EvDo options there. So, when I clicked on it, it now gives LTE, 3g, 2g, 1x, and Global as options. I tried changing it to 3g, but the changes would not save that way. The only way I could get them to save was to power off the phone, take the sim card out and put it back in, and then reboot and switch them. Once i pick a new setting (which is now set on 3g), it locks it and I can't change it again without removing sim card.
When I look in About Phone > Status section, I'm seeing the network says searching for service. The mobile network type is unknown. The service state is out of service, and the mobile network state is disconnected.
Is there anything I can do to fix this issue? If so, I would truly appreciate any type of guidance you guys or gals could give me. Thanks!
I didn't read your entire post but myself and several others have reported signal issues after 4.4.4 flashes on all different ROM types. I think 4.4.4 is just picky about what firmware and baseband you're running. I flashed a few different RPM packages too but in the end I got lucky flashing the BLK3 modem and it seemed to fix my issues. I had noticeably poor signal strength most of the time and a couple times I would look down at my phone and I'd have no signal at all.
Maybe a dev or expert can shed some light on the root of the issue. I don't know enough about under the hood stuff to make an expert diagnosis.
Edit: The unanimous fix that everyone appears to agree on is to flash the MF1 AIO (all in one) package and then flash the ML1 modem only. Problem is finding a legit source for the MF1 aio package seems to be up in the air.
Like I said though, I didn't even do this. I was just trying all kinds of combinations of modems/aio's/ and rpm's and I got lucky. 2 days now with a solid signal at all times. LTE speeds are blazing too, 45 down and 10 up.
Check ur imei number. Or flash a backup and see if that fixes ur problem.
Sent from my SCH-I535 using XDA Free mobile app
jayjr1105 said:
Like I said though, I didn't even do this. I was just trying all kinds of combinations of modems/aio's/ and rpm's and I got lucky. 2 days now with a solid signal at all times. LTE speeds are blazing too, 45 down and 10 up.
Click to expand...
Click to collapse
Can you share the specific steps you took? What worked for you and where can we download it from?
thanks!
I had my N5 on Sprint for a few months and didn't see any difference in signal from my S4.
I switched to Cricket and everything was fine for a bit.
I manually updated to 5.0.1 and have a build of lrx22c Baseband is m8974a-2.0.50.2.22
kernel 3.4.0-g88fbc66
My battery is draining like crazy and I see that Cell Standby is high, looking at it, I see %46 time without signal.
Person in the next office has a One Plus One and has full signal all the time.
I am thinking of resetting back to default, but wanted to post here to see if anyone has any clues.
Try another radio perhaps. Otherwise, nothing else you can do about it.... Except disable data when your signal is bad... That will all but stop the drain. ?
I had same problem, flashed stock image from Google and all was fixed for me
Yeah flash stock. Also which network mode are you in? It sounds like you may be in LTE only.
Sent from my Nexus 5 using XDA Free mobile app