I noticed how bad the issue with lost signal when you cover the antenna cover with your palm is and this happens if you are on 3G, so I changed to GSM only. Now I get full signal all the time but 70% of my calls are lost and diverted to voicemail due to unreachability. If I changed back to CDMA and GSM, I don't get lost calls but whenever I cover the lower back of the phone with my palm, I don't get calls again.
Neither is good so does anyone have a suggestion in regards to GSM only?
Related
Does anyone else have this annoying problem of 5-6 dropped calls in a row when using UMTS with Cingular?
It seems that when these dropped calls occur it happens many times again in a row. Then, after 5-6 there will be one that works and will continue to work for awhile. I know that if I swicth to GSM this does not occur, but switching back and forth gets quite annoying.
I called Cingular about this and they added my IMEI number to my account which I didnt think would help and it didnt. I never have a problem with data on UMTS. I get a range of about 800kb-1333kb per second.
TIA
yup. i've had problems too. i just switched to GSM only, and no more dropped calls. UMTS on Cingular is not stable yet...so i'm waiting until it is more fully integrated.
Hi everyone,
I'm on a fringe coverage area with AT&T. I have a pretty new sim card, but I noticed that I get a lot of dropped calls while on 3G (or H). I usually get 1-2 bars on 3G. Shouldn't the call I'm on, hand-off to Edge if the signal is not strong enough on 3G? Right now, its dropping the call altogether on 3G with no fallback to Edge. Is the Xperia's radio to blame for this?
Thanks!
i dont know who is to blame but if your on the fringe as you say, you should just manually set your device to use edge/gsm.
it will save on your battery and have less dropped calls. otherwise, you phone will keep bouncing between signals.
i also have the same problem and i am curious of the answer i dont want to lose 3g all together but i have 1 bar in my house and drop calls also.
Has anyone on AT&T tried to flash their xperia with the Raphael radio? Is the signal alot better?
not just exactly the same problem here, but similar (according to the network). at home, i have no 3g coverage and manage to get edge at best, problem is intermitantly my voice stops, even though i can here the other caller perfectly, the phone still keeps between 2-3 bars of signal, and i can even stay on the call over 30 seconds after it happens. the other caller can just hear like a dead noise. the network has me testing the 3g thing for the next couple of days though.
PS. this also happened with a K850i and a K800i
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?
I got an email while on a call without wifi. I'm in dallas. Anyone else getting data and voice now?
Has been possible since the beginning of time as long as you are on 3G
I concur. ↑
Sent from my Nexus One using XDA App
Really? I've never been able to do that until recently.
Usually when I'd start a call I'd lose the 3G icon and if I received email while in call it wouldn't show up until after I hung up.
Couldn't mess with data without wifi.
Used to do this on my cliq and G1 as well...
Odd.
Also been doing both (on TMob 3G) since February...
Any gsm phone can do that, but it is impossible for cdma
Your phone may have been set to WCDMA only up until now.
chalk that up as a win for GSM and a lose for CDMA
JCopernicus said:
Your phone may have been set to WCDMA only up until now.
Click to expand...
Click to collapse
WCDMA is 3G, it has nothing to do with CDMA
In a weak 3G signal area, the phone usually does a handover and transfers the call to the GSM network when the 3G signal falls under some threshold, and GSM doesn't support simultaneous voice and data (icon disappears while on a call)
maybe you have better 3G coverage now and your nexus doesn't need to go the GSM route
I've noticed problems with using data and voice together too. What seems to happen is that it works ok at first, but the instant you lose 3G it never comes back until the call is over, no matter how good your signal. Very frustrating when trying to use your data while on a long call.
Both AT&T and T-Mobile (as can any GSM carrier worldwide) can do voice and data at the same time as long as your phone has a "3G" connection visible while on the phone call. This has always been possible.
What you may see happen is that if you wrap your hands around the bottom of the phone during a call, the signal may drop to "E" or Edge. You can't use data and voice at the same time if your phone is on Edge.
To alleviate this, use a wired or Bluetooth headset, or hold the phone with your fingers rather than your whole palm.
Paul22000 said:
What you may see happen is that if you wrap your hands around the bottom of the phone during a call, the signal may drop to "E" or Edge. You can't use data and voice at the same time if your phone is on Edge.
Click to expand...
Click to collapse
Have you ever seen my problem where once the signal drops to Edge it will never go back to 3G? It doesn't seem like normal behavior to me but it seems to always happen when I need my data during the call. I've been stuck on multi-hour calls where my phone refused to go back to 3G almost from the beginning, and then the second I hang up the phone goes right back to a 3G signal with full bars again. Very frustrating!
pfmiller said:
I've noticed problems with using data and voice together too. What seems to happen is that it works ok at first, but the instant you lose 3G it never comes back until the call is over, no matter how good your signal. Very frustrating when trying to use your data while on a long call.
Click to expand...
Click to collapse
the ATT 3G network is not setup to do handoffs from gsm back to 3g. it currently will ONLY handoff from 3G to gsm during a call, and if you are still on your call, it will not switch back until you hang up. in the future this can be enabled both ways. tmobile apparently is setup the same way for now. so you're experience is normal until they reconfigure their network.
Actually it depends on the phone hardware. It IS possible to use GPRS and voice as well if the hardware supports it, its not only something available on 3G/UMTS/WCDMA. There is a pretty even split between class A and class B phones these days, you should look up the specs of the phone you're using.
Nearly all 3G devices allow you to use data and voice together since it isnt timeslot based and so voice and data is logically split and not time divided. This means you dont need specially designed hardware to do it, just the processing power to do it.
Class A
Can be connected to GPRS service and GSM service (voice, SMS), using both at the same time.
Class B
Can be connected to GPRS service and GSM service (voice, SMS), but using only one or the other at a given time. During GSM service (voice call or SMS), GPRS service is suspended, and then resumed automatically after the GSM service (voice call or SMS) has concluded.
Class C
Are connected to either GPRS service or GSM service (voice, SMS). Must be switched manually between one or the other service.
@kam187, thanks for that. I've been with T-Mobile since they were Voicestream, about 10 years now. And I thought I was making voice and data connections with my Nokia phone years ago, before their 3G rollout.
Here is the last phone I used before going the G1 route.
http://www.gsmarena.com/nokia_e61-1322.php
Yep E61 is on nokia's list of Class A devices:
http://wiki.forum.nokia.com/index.p...s_supporting_GPRS_Class_A_(Dual_Transfer_Mode)
Has anyone experienced this before? I seem to loose 3G connectivity while talking on a call. I can keep talking... but the 3G icon disappears and I see an alert icon notifying me that I've lose data connectivity.
This doesn't happen all the time, but quite often. Sometimes, the icon with signal bars will have a small 'R' at the top left indicating that I may be in Roaming mode.
I've got the ATT Nexus One with Bell Mobility as my carrier (Canada). They have a pure HSDPA network with no 2G fall back, so I'm not sure how I could lose 3G and still be on the call... I've got 2.2.1 FRG83 with Stock Android and the phone is NOT rooted.
Any suggestions? Should I reapply FRG83 -- or the entire stock android image (is this even possible on a non-rooted phone)?
Not sure if this is the same, as I never go into Roaming mode... but I routinely lose my data connection while making phone calls. I'm on T-mobile, btw.
Is this something normal? Have you just ended up living with it?
I'm slightly concerned about missing an email or SMS during a call if data connectivity is lost. Although, I don't think that data is truly lost as Bell Mobility only has a 3G network, there is no 2G to fall back on...
Are you sure you're not roaming over other networks? I'm sure you are switched to another network, and the data is dropped because Android has a switch to turn off data (which has nothing to do with SMS, by the way) when roaming, and this switch is on by default.
When the data is dropped, I believe it's not re-negotiated until the end of your conversation, so if you're switched to a roaming cell tower for even a second - your data is gone until the end of your call.
If your cellular carrier has agreement with other carrier's cell towers and they accept roaming (which is sometimes the case, as I've learned from this forum) - you should turn that switch off to retain data even when roaming.