3G signal problems with certain CIDs - G1 General

Hi, I have a problem that I suspect is an isolated situation, nevertheless, it has been bugging me for over a month now. Hopefully the community will have some insight.
I will try to report the problem in it's entirety:
I do have a shortcut on my desktop to Phone Info (*#*#4636#*#*). From here, the thing I note of interest is the CID, which I guess is the tower ID that my phone is currently connected to. Also of note here are the ASUs, which I'm not quite sure what they are, but they seem to correlate with the number of bars being reported (ie more asu = more bars).
I also use Hello IM (AIM app from the market) heavily, and I have "Show notification icon" enabled, so it works fairly well as a visual indicator of connectivity, or lack thereof.
Ever since I upgraded from Super D to an Eclair rom, I've had problems with 3G handoffs on Tmo. Basically, whenever my phone switches from Edge to 3G, or one 3G tower to another 3G tower (different CID in Phone Info), the connection times out. I see the infamous "up arrow but no down arrow" activity on the 3G icon in the notification bar. This happened just about everywhere I went.
About a month ago, I decided to upgrade the phone radio, from 2.22.19.26I to 2.22.23.02. For one reason or another, this completely solved my problem. I had no problems with handoffs, 3G just started working again.
A couple weeks ago, I downloaded CM6 and tried out Froyo. The first thing I notice is the weak signal on my radio. Before flashing the rom, I did a nandroid backup, and I know I had 3 bars of 3G signal where I set the phone down. After the flash, my phone had no 3G signal, and for some reason refuses to switch to edge; so my signal indicator is sitting there with an X over it. After some time, it finally does pick up a 3G signal--this is where it begins to get weird...
My 3G works right now, for the most part. There seems to be 2 very specific locations where it does not work. As mentioned earlier, I am able to check CID's through the Phone Info menu. I notice 2 CIDs where my 3G connection times out. By time out, I mean an apparent loss of data (ping doesn't work in Phone Info). This happens every time I am connected to these 2 towers. As soon as the phone switches off to another tower, data works fine again. The strange part is, even though I am not getting data, the asu and signal bars continue to move up and down as if I have a normal signal. The phone also makes no effort to switch back to Edge, even though 3G data is completely stalled (Hello IM shows as disconnected, ping fails).
This started happening since the CM6 update, and have persisted since then. Even after I did a nandroid restore back to my previous rom (Super E 1.02), the radio problem remains. Before CM6 and after I updated my radio, I had no problem connecting to these same towers.
In a nutshell:
3G does not work when I am connected to 2 specific towers since CM6 update
Phone makes no effort to switch to other 3G towers or Edge when connected to these 2 towers
When connected to these towers, signal strength continues to go up and down as normal; usually hovers at a consistent 2 to 3 bars with the stock signal indicator (4 bars max).
Currently I have tried flashing all the Eclair roms available, as well as my old Super D rom (still using 2.22.23.02 radio). Problem remains.
Does anyone have any idea what's going on?

Related

0 bars 3g/HSDPA leaving me uncontactable / dropouts

Hi all,
I realise there are many discussion threads linking to problems with maintaining connections and so on, but I'd like to ask for advice specifically about the HD2 switching from 'H/3g' down to 'G'.
Basically, I'm finding there is a fair delay between the HD2 being disconnected from a 3g network and needing to switch to 'G'. I'm in a patchy area right now, and I often look down at my phone to see it displaying 'H' or '3G' but with 0 bars. If I attempt to make a call, it sometimes seems to force it down to G, or it just hangs and I need to redial. During the time I'm on 0 bars I appear to not be contactable, i.e. no calls can be received.
Just now I made a call and the other party could barely hear me. I looked at the phone and I was on 0 bars of 3g. I had to disconnect and call back, with the HD2 then stepping down to G. Why couldn't this happen straight away as the 3g connection was struggling?
I'd like to know if there is any way I can force the HD2 to step down to G fast, or whenever there isn't 1 bar of 3g available? My Hermes was very fast at switching between the two, and I could easily hold calls on the road going through different areas with minimal dropouts.
I've been reading threads on here, someone advised changing the setting in 'Band' to another setting then back to 'Auto'. This didn't help for me.
This is probably a radio issue, but I'm on about my 4th radio now and am still struggling. On a side note, my HD2 isn't latching on to 3g and holding a steady connection anywhere near as well as my Hermes did, but I'll keep experimenting with radios. How is your HD2 comparing to other 3g devices you have?
Is there anything anyone can advise to ensure that I can actually be contacted when my phone is on and in an area with 100% 2g coverage (besides disabling 3g all together)?
Hope this makes sense.
Network: O2 UK
Location: Tunbridge Wells, South East England
Rom: HTC 1.66
Current radio (will be reflashed with something else today): 2.07.51.22_2
Thanks!
You can flash tmo radios with 1.66?!
Which ones have you tried, for reference.
Can't answer a call.
I'm on AT&T US. I have a T9193. I'm having a similar issue. The phone will not fall back to E or G while ringing or on a call. It just drops the call. By the way I show 5 bars of H and my download speeds are 500-700kbps. The phone bands are both on auto.
If I call my cell from a land line, I hear 2 rings then a fast busy. It does NOT fall back to voicemail. I can't pick the HD2 up at home at all. I wait for the caller ID then force the phone band to GSM then call the person back. It's not random at all. It is EVERY call.
If the phone is on EDGE it works fine for voice.
I have tried the 2.07.50 default radio and now I'm running the 2.10.50.
I use the SIM from my trusty x7500 as my main number and it's 2 years old. I also tried my backup number with is a SIM from last October.
I'm lost at this point and ready to back to my cracked x7500. At least I can make a phone call. That is what these things are supposed to do right?

Puzzling coverage...

I'm on the Three network, have an unlocked HTC desire HD with 17 m2 radio.
Normally I get terrible signal in the flat that i live in, its a granite building in Aberdeen. Occasional the signal is around 1 bar, sometimes grey, and most of the time its X.. (no service), but i still manage to get 3G or H. When looking at the APN settings and specifically at available networks when doing a manual search, next to 3 is a green star which I assume means it's connected to 3 mobile network. But sometimes i get amazing signal, full bars, which puzzled me! so I looked at the available networks and next to 3, there was no star, so i tried calling a number and it rang and came through. I also tried using mobile internet when in this "good coverage" state, and google would not load (G is displayed in the notifications bar). After a while, the bars would drop to 1 or grey, and i would then get H or 3G, and google loads again. What's going on? and how can i take advantage of this when i have no signal.
try and find the app called open signal maps
that can be used to see where the signal-towers are
and how good the signal is
or use this site and search your adress
http://opensignalmaps.com/
sincere regards,
blokhoofd
The antenna is really wierd.
Normally I only get 2G connection.
But if I completly take my hand off the lower cover and lift the phone up a bit for a better signal, I get a 3Mbps connection, though as soon as I lower my phone back to normal the 3G signal is completly gone or gets really bad (zero bars and lower than EDGE speed)!
The antenna in this phone sucks really bad, my old Nokia phone atleast had a stable connection.
This is very bad news... I was considering DHD, but if there are isseus with gsm signal than I am really worried... Is it also happening on the stock ROM?
As long as network coverege is good you should be okay.
I swaped my SIM card with a friends and with better coverege, 3.5G worked good (solid 2Mbps), only slight drop if SIM cover is completly covered, which doesn't happen in normal use.
I just can't understand how I can get such high speeds with my SIM while on a badly covered area. haven't tested how well other devices pick up the 3G signal (my old phone wasn't 3G yet)
I'm still using stock ROM btw.
Have you tried a different radio?
People are reporting different results with them, so might be an idea to play around and see if anyone of them works better for you
I've tried the new Orange radio and I'm getting better signal, although threes coverage isn't great I would expect the device to seamlessly change between 3.5g and gprs but it doesn't it'll get stuck on hsdpa network until the x appears and sometimes it'll go to gprs and go back to three bars. Before it would be on x all the time and that's probably why the battery was quite ****. 3g doesnt penetrate buildings very well and I live in a granite building so would explain why I get better gprs signal. I just wish the antenna was smart and changed seamlessly.
Sent from my Desire HD using XDA App
So annoying dhd still not selecting the next best connection just no service but if I select to detect network automatically it connects eventually
Sent from my Desire HD using XDA App

[Q] Sporadic Signal Loss

Okay so i've got an aria rooted and flashed with the Liberated 2.2 rom. I've been using it for the past 3 months and I've noticed that I will go from full service while a phone call is comming in and complete signal loss when I answer it. I have set the phone on a table and watched the network signal strength go from -113 dBm and 0asu to -81 dBm and 16asu and vise versa. I have also noticed that when I lose signal my "H" for the data goes with it and service comes back a few seconds later very strong but showing "G". From there it will go to "E" then back to "H".
Could anyone explain this or have a better reason as to why this is happening? Maybe its just based on the connection where I live but I've used the app Antennas and the tower is about 1/3 mile away.
Any info or help would be awesome
Thanks
i'm not sure why this would happen outside of a poor bit of service where you're living.
i used the various roms for the aria and never had any sort of service loss issue.
as far as the icons switching around, e = edge network (2g), h = hspa (3g). when your phone drops its connection, it tries to reconnect as fast as possible, usually with edge, then after its strong it looks for the 3g connection.

[Q] Auto switching to HSDPA from UMTS

Over the last three weeks something has happened which has caused my phone to permanently keep an HSDPA connection to the network. Previously I would get the 3G symbol when mobile data was enabled, and then the H would appear only when actually transferring data. Now the H is there all the time. Even if I turn off mobile data the HSDPA connection is still there (verified from the Phone Info screen) even though neither H or 3G are displayed. This is playing absolute havoc with the battery life of my phone.
I'm strongly suspecting that something has changed at my provider's end (Vodafone in Australia) as they are actively upgrading the network in my area. I have also travelled elsewhere and seen the old behaviour, so I'm pretty sure it's not my phone. But I'm still wondering if there's not some setting I can change which might restore this type of behaviour, say in build.prop. I am running CM7 on an HTC Desire. I've tried a few different radios but none changed this behaviour. I'm currently using 5.17.05.23.

Bad Reception with this phone?

Hi,
Was wondering if anyone got bad reception with their phone. I tried 3 different carriers since I had my ideos, in neither of them I ever had very reliable reception and lately the problem is getting worse. I'm running aurora 4.1a and I loose reception all the time, and the battery drains so quick because it's always looking and looking. My sister, my mum and my dad all have good reception (2 of them with my old carrier and 1 with my current carrier).. I can put my dad's phone (same carrier) next to mine.. he will have full bars with 3g and I'll have no reception at all!!!!!! Then it connects and disconnects again, and so it goes... Anyone having such issues?
Thanks.
Tcm9669 said:
Hi,
Was wondering if anyone got bad reception with their phone. I tried 3 different carriers since I had my ideos, in neither of them I ever had very reliable reception and lately the problem is getting worse. I'm running aurora 4.1a and I loose reception all the time, and the battery drains so quick because it's always looking and looking. My sister, my mum and my dad all have good reception (2 of them with my old carrier and 1 with my current carrier).. I can put my dad's phone (same carrier) next to mine.. he will have full bars with 3g and I'll have no reception at all!!!!!! Then it connects and disconnects again, and so it goes... Anyone having such issues?
Thanks.
Click to expand...
Click to collapse
I'm having the same problem, I'm running Aurora ICS. I use to always have good reception everywhere, Then suddenly I've just been unable to. Any help would be great! If I do find out any fixes to the issue myself I will sure let you know.
Good to know that I'm not the only one! Thanks. Hope we find a fix soon.
I've fixed mine now, What I've done is I've gone into Settings > Wireless & Network > Mobile Networks, and scrolled all the way to the bottom, and simply re-registered on the network and selected Use only 2G Data. Mines now working fine with full connection everywhere. However I don't know if our problems are exactly the same, however this is what fixed mine. Sorry if this doesn't help.
I have the same issue. Mine connects to 3G and has good connection, but then it simply disconnects and moves to 2G or reconnects to 3G some time later. That happens pretty frequently and I thought it was an issue with the carrier, but now I am not sure anymore.
Blefish, that is EXACTLY what happens to me, and I tried 3 major carriers in Australia (the only 3 that have their own actual towers). Just after I posted this thread, I happened to do the same thing as IwAsBlack recommended and... so far it seems to work. I have generally better connection and I haven't seen that ugly no reception icon since! Of course, internet browsing will be generally a bit slower but then again, it's better than staring at the phone for 3 minutes until it reconnects just to open Google.
You haven't stated which model you have. I got rid of a Motorola Bravo for at U8800-51 and I have excellent performance over AT&T (US). Crystal clear even with only one bar and I have never had a dropped call.
Have the same issue on any ROM with any mobile network in Belarus. Can't use 2G as recommended above 'cos of a huge use of mobile internet for some net-radio.
Sorry for bad Eng.
Its a U8800 Q&A forum, I didn't think that I had to state the version since I have a U8800.
Yesterday I tested and kept an eye on for the whole day! The reception since changing to 2G only has been AWESOME! Only had a drop out when I was in the subway (of course!) but aisde from that, I had amazing reception not to mention.. that my phone lasted the whole day with still 15% left!! (3G on, it would have to charge it twice while I'm at work) So, it fixed my reception AND my battery problems.
Tcm9669 said:
Its a U8800 Q&A forum, I didn't think that I had to state the version since I have a U8800.
Click to expand...
Click to collapse
FYI, Ideos X5 U8800 describes four different models.
I know it does. What I meant is that I have the Normal U8800 model, so I didn't feel like it was necessary for me to point any variant model number like PRO or 51 or H, because it's STANDARD U8800
So we can make a conclusion that U8800 does not operate well on 3G. I can't switch it myself because I want to use internet too. And I am pretty sure we can't do anything about it, no matter if the problem is in hardware or software.
Blefish said:
So we can make a conclusion that U8800 does not operate well on 3G. I can't switch it myself because I want to use internet too. And I am pretty sure we can't do anything about it, no matter if the problem is in hardware or software.
Click to expand...
Click to collapse
Mate, if you switch to 2G you will still be able to browse the internet! It will only be a LITTLE bit slower, better than having constant disconnection!!! I constantly use the internet to sync my gmail, send free texts, browse the net and a bunch of other stuff.. works even better on 2G with constant reception, not to mention the benefit of the phone battery lasting a whole day (AND still have internet).. so switch to 2G and you will like it... still good internet only with better reception
Same issue
Having same issue when using GSM/WCDMA auto or preferred modes. works normal on GSM network only.
Even when I have no signal of 3g, gsm is working in the background.
problem arises when I have a call, 3g signal drops to minmimun, after the call phone tries to reconnect with the 3g signal but drops the GSM signal in the process.
Try this , as soon as you disconnect the call, try to call yourself from other at that instant only. Your phone will be shown unreachable because phone drops the GSM signals.
rdagar said:
Having same issue when using GSM/WCDMA auto or preferred modes. works normal on GSM network only.
Even when I have no signal of 3g, gsm is working in the background.
problem arises when I have a call, 3g signal drops to minmimun, after the call phone tries to reconnect with the 3g signal but drops the GSM signal in the process.
Try this , as soon as you disconnect the call, try to call yourself from other at that instant only. Your phone will be shown unreachable because phone drops the GSM signals.
Click to expand...
Click to collapse
Mine works on wcdma, but that is because i have the radio.
Sent from my U8800-51

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