[Q] 4G LTE, signal bar.... - RAZR HD Q&A, Help & Troubleshooting

I have an interesting problem : On my XT925 ( XenonHD rom), I have no signal bar at all while connected to a 4G network(0 db). I can still make call and the signal bar actually appears when I call, but as soon as I hang up the bars go back to 0. While I switch to a 3G or H+ network, I can see my signal bar.
I have no 4G connection problem, data works fine.
I guess its no really a problem... I just wish I could see my signal strength in 4G.
Anyone as ever came across something like that ?

atessier said:
I have an interesting problem : On my XT925 ( XenonHD rom), I have no signal bar at all while connected to a 4G network(0 db). I can still make call and the signal bar actually appears when I call, but as soon as I hang up the bars go back to 0. While I switch to a 3G or H+ network, I can see my signal bar.
I have no 4G connection problem, data works fine.
I guess its no really a problem... I just wish I could see my signal strength in 4G.
Anyone as ever came across something like that ?
Click to expand...
Click to collapse
I read that in the change logs of a few ROMs that the 4G signal strength display is a little wonky. If you needed to see the actual signal strength you could you into Settings -> About Phone -> Status. Alternatively, you could change the status bar setting to show numerical signal strength at all times instead of bars.

no luck...
bananapeapod said:
I read that in the change logs of a few ROMs that the 4G signal strength display is a little wonky. If you needed to see the actual signal strength you could you into Settings -> About Phone -> Status. Alternatively, you could change the status bar setting to show numerical signal strength at all times instead of bars.
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Not working....when I switch to numerical display for the signal strength I get 0 dBm. As soon as I call out or receive a call it goes to -90dBm, stays up for 30 sec. and then goes back to 0.....
On a different note, the satus says that Im connected to LTE while the bar indicator read 4G.

atessier said:
Not working....when I switch to numerical display for the signal strength I get 0 dBm. As soon as I call out or receive a call it goes to -90dBm, stays up for 30 sec. and then goes back to 0.....
On a different note, the satus says that Im connected to LTE while the bar indicator read 4G.
Click to expand...
Click to collapse
Having the same issue with 4.2/4.3 roms. Thought it might have to do with network. Tried a few different settings, but no fix yet, and I'm not sure all calls come through. Data connection is no problem though. 4G /LTE are inter-changeable. Hopefully there's a fix it somewhere.

Related

3G control

I live in an area where my 3G signal strength is often 1 bar or below and is weak but my non 3G signal strength is 4 bars and strong.
Is there an app that I can use to set up when 3G cuts out and reverts to normal GSM signal.. I know I can set 3G to auto switch but it only cuts in when it feels like and often this means my phone is limbo with no 3G signal and no auto option to switch over to GSM and will often just drop my signal mid call at home.. or am I asking too much.. cheers..
When your 3G signal becomes weak it should automatically switch to GSM. If switching between the two is causing your phone to drop calls you can lock your phone to GSM only by changing it via the Comm Manager, tap on "change phone settings" and then "Band" on the bottom.
ok. cheers..

[Q] Signal Strength Indication Lies?

After finding out that forcing LTE Mode on the SamChg (See here) always results in a Signal Disabled "circle-slash" display for the network signal strength - even when you have a solid 4G connection - I am suspecting that the signal strength bars in the notification bar only show CDMA signal strength, and never show 4G signal strength.
If so, the signal strength indicator lies to us (at least, when the 4G icon is on the notification bar).
Is there a widget / app / notification mod that will show both the 3G and 4G signal strength? A dB indication would be fine. That way, I can identify the real 4G signal vs. the real 3G signal vs. the signal bar display.
Cheers,
Yes, the signal strength meter lies and only indicates 1xRTT signal strength, not EVDO or LTE.
OpenSignal Maps will show the LTE signal strength but it's a mapping program.
Real Signal shows separate 1x and EV bars like how Verizon feature phones display it, however it doesn't yet support LTE. I've e-mailed the developer to find out if this was planned and/or if they'd like any help in implementing that feature and I've received no response thus far.
skuzz said:
Yes, the signal strength meter lies and only indicates 1xRTT signal strength, not EVDO or LTE.
OpenSignal Maps will show the LTE signal strength but it's a mapping program.
Real Signal shows separate 1x and EV bars like how Verizon feature phones display it, however it doesn't yet support LTE. I've e-mailed the developer to find out if this was planned and/or if they'd like any help in implementing that feature and I've received no response thus far.
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It's no longer in the market. Do you have the APK by chance ?
Field test mode access seems to elude us on the Charge, but if we could find the code, there's got to be a signal strength indicator in there.
I'm going to query Samsung to see if they'll cough it up.
ram130 said:
It's no longer in the market. Do you have the APK by chance ?
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Click to collapse
nvm..found it under another name. Also Samsung is not the only one with misleading bars, Motorola too. Just look at the thread I did on it here:
https://supportforums.motorola.com/message/302492
distortedloop said:
Field test mode access seems to elude us on the Charge, but if we could find the code, there's got to be a signal strength indicator in there.
I'm going to query Samsung to see if they'll cough it up.
Click to expand...
Click to collapse
Meanwhile, googling around I found some info on enabling hidden menus on the phone (basically same steps as for Fascinate), but once there, none of the known dialer codes work for me, despite others saying they do.
HOWEVER, check out the app called SGSTools in the Market. Install it, run it, select Service Mode. A black screen comes up, hit the menu button, then back and voila, you're in LTE Monitor screen. You might be able to navigate around from there and get your signal information.
Hope this helps.
distortedloop said:
Meanwhile, googling around I found some info on enabling hidden menus on the phone (basically same steps as for Fascinate), but once there, none of the known dialer codes work for me, despite others saying they do.
HOWEVER, check out the app called SGSTools in the Market. Install it, run it, select Service Mode. A black screen comes up, hit the menu button, then back and voila, you're in LTE Monitor screen. You might be able to navigate around from there and get your signal information.
Hope this helps.
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Click to collapse
you should take a pic...I'm curious what that mode looks like. Don't have a charge to fool around with it.
Bumping this up because I just noticed that in Anandtech's review of the LG Revolution, there's a way at least for that phone to see the 4G signal strength: http://images.anandtech.com/doci/4450/DSC_0734.jpg
Given that the Revolution and Charge have different LTE chips, I'm not sure if this can be reproduced on the Charge.
Credit: Page 10 of the LG Revolution review by Anandtech
---------- Post added 10th November 2011 at 12:36 AM ---------- Previous post was 9th November 2011 at 11:55 PM ----------
I just looked around the LTE Monitor menu as distortedloop posted above (thanks!) and it does seem there are some values that may give a better idea of the LTE signal.
One interesting thing I noticed was some sort of MPSR timer that counts down; what it seemed like it was doing was counting down to the next time it would attempt to connect to the LTE network (I was on 1X at the time). Other values that I believe pertain more to the LTE signal strength include: RSRP (Reference Signal Received Power) and CINR (Carrier-to-Interference-and-Noise Ratio). I correlated faster LTE speeds with lower RSRP values (that is, LESS negative).

[Q] LTE + WLAN at same time

Hi,
today I was wondering about that. My N5 still holds a connection to LTE while it uses internet over a WLAN network. Only when I'm getting a call it switches to E/H/3G whatever to build up the phone call. Isn't it wasting battery holding up the LTE connection (LTE needs more power than the rest doesn't it?)?
Do you guys know why its made like this?
Thanks,
S3cret
Edit: Pic not showing up in thumbnails so here's a direct link:
https://dl.dropboxusercontent.com/u/52317361/Screenshot_2013-12-07-19-08-53.png
S3cret said:
Hi,
today I was wondering about that. My N5 still holds a connection to LTE while it uses internet over a WLAN network. Only when I'm getting a call it switches to E/H/3G whatever to build up the phone call. Isn't it wasting battery holding up the LTE connection (LTE needs more power than the rest doesn't it?)?
Do you guys know why its made like this?
Thanks,
S3cret
Edit: Pic not showing up in thumbnails so here's a direct link:
https://dl.dropboxusercontent.com/u/52317361/Screenshot_2013-12-07-19-08-53.png
Click to expand...
Click to collapse
Phone calls use data? It should say disconnected. Does it persist after a reboot?
Aerowinder said:
Phone calls use data? It should say disconnected. Does it persist after a reboot?
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Click to collapse
No it doesn't use mobile data. I'm just wondering that its still saying that the network type is LTE, cause when It's connected to a wlan the network usage would only be for phone calls and LTE does only support mobile data but no calls or sms. Just wondering why the network type isn't changing to GPRS or whatever.
S3cret said:
No it doesn't use mobile data. I'm just wondering that its still saying that the network type is LTE, cause when It's connected to a wlan the network usage would only be for phone calls and LTE does only support mobile data but no calls or sms. Just wondering why the network type isn't changing to GPRS or whatever.
Click to expand...
Click to collapse
Your picture looks normal, this screen shows the data network type, not your cell voice/sms connection. The network is LTE, but is disconnected while you are connected on Wifi.
To see what is happening, look on the status bar. It shows the Wifi icon then the cell signal strength but not LTE. When you disconnect the Wifi, the Wifi icon will disappear and LTE will appear next to the cell signal strength icon. If it is doing that, all is working correctly.
alistairs1 said:
Your picture looks normal, this screen shows the data network type, not your cell voice/sms connection. The network is LTE, but is disconnected while you are connected on Wifi.
To see what is happening, look on the status bar. It shows the Wifi icon then the cell signal strength but not LTE. When you disconnect the Wifi, the Wifi icon will disappear and LTE will appear next to the cell signal strength icon. If it is doing that, all is working correctly.
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Click to collapse
Yup its doing right that.
Still a little weird for me^^
Nvm, thank you guys.

[Q] Signal problems

I am running on [4.4.2] [FEB-13][UNOFFICIAL] AOSB Project [v1.2.9] with a I535VRUCML1 modem. my signal was giving me 1x so i went into the options and changed the prefered network type to LTE/CDMA/EvDo and allowed data roaming.and now it i toggle airplane mode i can get one bar of 4g but then it switches down to one bar of 3g and eventually down to 1x. I originally had the VRBMF1 modem with the same results. Also it might be worth mentioning that when i select LTE/CDMA/EvDo it apears as network mode: CDMA+LTE/EvDo. Any ideas on what i might be doing wrong, or how to fix it?
aarrison126 said:
I am running on [4.4.2] [FEB-13][UNOFFICIAL] AOSB Project [v1.2.9] with a I535VRUCML1 modem. my signal was giving me 1x so i went into the options and changed the prefered network type to LTE/CDMA/EvDo and allowed data roaming.and now it i toggle airplane mode i can get one bar of 4g but then it switches down to one bar of 3g and eventually down to 1x. I originally had the VRBMF1 modem with the same results. Also it might be worth mentioning that when i select LTE/CDMA/EvDo it apears as network mode: CDMA+LTE/EvDo. Any ideas on what i might be doing wrong, or how to fix it?
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Click to collapse
I won't trust the signal bar, specially on custom rom. You should download an app called SignalChecke light and see the reading in db. Around -102db is OK.
buhohitr said:
I won't trust the signal bar, specially on custom rom. You should download an app called SignalChecke light and see the reading in db. Around -102db is OK.
Click to expand...
Click to collapse
Its not the signal bar. I get the same Same signal strength as before about -98db of 4g. But the signal switches automatically. And holds on 1x
aarrison126 said:
Its not the signal bar. I get the same Same signal strength as before about -98db of 4g. But the signal switches automatically. And holds on 1x
Click to expand...
Click to collapse
Ah...I see, seems like you tried both modem and same issue, I would try flash back to TW rom and see...

anybody else have their cell signal disappear in the new update?

17.1810.2001.121 update
Sometimes my signal bars disappear, seemingly at random.
awsomjgp said:
17.1810.2001.121 update
Sometimes my signal bars disappear, seemingly at random.
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Click to collapse
I started to get the problem after upgraded to Android 10. It isn't random, it is related to signal strength. I use Network Signal App to monitor the signal strength. I noticed if the signal strength is over 52%, signal bar disappeared and once the signal strength dropped below 52%, it reappeared.

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