So using the secret menu, I was trying different methods to see what signal strengths I was getting at my place, same spot. Interesting enough, the signal strength bars are different when using CDMA auto prl (4-bars) and EvDo only (2-bars) mode, even though I still see the 3g icon. Also, it seems the 1x radio is always on in every mode except EvDo only, plus I tried calling using all 5 modes.
Thus far, (1-yes, 0-no) I can make a call in mode:
CDMA auto PRL - 1
CDMA only - 1
EvDo only - 0
CDMA + LTE/EvDo - 1
LTE only - 1
so my question is, why can't I (and is anyone able to) make calls over EvDo only mode? When I place one, it hangs for a sec, and ends automatically saying "Call was lost". I was hoping to get better call quality (even if I can't have 4g speed), cuz right now calls sometimes sound muffled (but clear enough to understand), compared to when I had my nexus one on t-mo. (I tried eHRPD and EvDo-rev.a modes to no avail)
PS I know (atleast I read somewhere) that the T-Bolt cannot support calls over LTE itself, or VoLTE as it's called (unless if that's changed or I am wrong.)
Any thoughts? your experiences? I just want to get ppl's thoughts on this.
So... I guess no answers then?
Well, EvDO-only would not permit any voice calls because you've told the radio to only operate with a data signal. EvDO, or "Evolution-Data Optimized", is the 3G data component of CDMA wireless networks, so without a preferred network mode that includes CDMA you won't have any voice service.
when i had my phone on evdo only (stupidly thinking it was 1x) i couldn't make or receive any calls
evdo handles data, 1x handles calls/sms
squeakyl said:
when i had my phone on evdo only (stupidly thinking it was 1x) i couldn't make or receive any calls
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Right. CDMA = 1x data and voice EVDO = data only. If you force the phone into a data only mode, voice will not function.
Related
With Use "2G Only" checked I get NO data. I've been googling and testing for 4 hours.
When I uncheck "2G Only" it switches to 3g and I get data. If the 3g signal is bad it will switch to E and I will get data and if I move near the window and the signal gets better it will switch back to H. So I know Edge works fine and is in this area.
At the same location, if I check 2G Only, I get no data. Voice is fine.
I went into *#*#4636 Info and when GSM Only is selected, I press Menu, and it shows Enable Data connection but when I select it, it does nothing. The menu disappears but it acts like nothing happened.
When I boot Windows Mobile 6.5 Edge and 3G work fine.
I have to get 2G only working because the 3g is random in my condo.
FYI, I can't get MMS sending to work either. I tried port 8080, I tried with username and without, with and without passwords, with APN type and without too.
I've had the same problem on builds that have a 3g only choice (wcdma). When selecting, I get no signal, otherwise it was fine. I wonder what that is messing with.
nrfitchett4 said:
I've had the same problem on builds that have a 3g only choice (wcdma). When selecting, I get no signal, otherwise it was fine. I wonder what that is messing with.
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I have the same issue too
What network are you on? TMobile I assume since you talk about Edge and GSM.
Edge is 2.75G in essence. TMobile does not have a distinct 2G signal, at least not that I am aware of. It goes G (no data), E (Edge 2.75G), 3G, and H.
So by choosing 2G only, you eliminate even E...therefore no Data.
J
I'm on AT&T with a Telstra phone that has 850Mhz data.
If 2.75G is Edge and HAS data, how do I select it from the *#*#4636 or from some other menu?
On Windows Mobile 6.5, when I select GSM only I still get EDGE for data. So I can have a reliable voice call and when I'm not talking I can have Edge data.
From what I've read, it's possible to to disable the high speed connection and leave only EDGE and other slow connection by change network mode to GSM only. However when I tried that on mine, I lost all connections altogether include voice call, and left with "unregistered sim, emergency call only". My carrier is CDMA, so not sure if that has anything with it.
What am I missing here?
Hspa 3g only on gsm system.
For cdma you have 1x and evdo..don't know if you can disable evdo or not. Please see setting/wireless & networks
Sent from my GT-I9100 using Tapatalk
My SG2 is set up in network mode with GSM/WCDMA(Auto mode).
When I’m home the signal strenght, WCDMA, is -101 dBm 7asu and the voice quality is very bad, almost unusable.
When I manually switch to GSM the signal pops up to -73 and 15 asu and I can talk with a sound quality as it should be.
To me it seems that the phone doesn’t switch to GSM, or too late, when the WCDMA signal is bad.
I have tried quite a few different modems for the SG2 but I can’t see any difference between the versions. Maybe it’s the network provider that manage when to switch?
If would be great if someone could give me some info. on how the switching between WCDMA and GSM works, and the thresholds.
GSM auto (PRL) will favour GSM over 3G.
I am not sure if it will work with your network, but you can only try...........
There are a few apps around that will do it, or you can just use the following:
1. Phone dialer *#*#4636#*#*
2. Phone info
3. Set preferred network type to : GSM auto (PRL)
Edit: I am not sure if it will revert after a reboot.
This post was rather useful info, although different phone and network, principle is the same:
http://forum.xda-developers.com/showpost.php?p=6591404&postcount=1
Hi All,
I just got the international Z5c, model E5823, which supports both tmo us LTE bands in my area (bands 1 and 12). When I have preferred network type set to 3G, I get more bars and have data connectivity. When I switch it to 4G, the bars go down to 1 or 2, and I get no data.
I did a logcat while switching from 3G to 4G and noticed that while switching, the icon switches between H+ and H, then eventually drops out. I'm still trying to see if there is anything useful in the logcat, but the one thing I noticed that seemed interesting was
Code:
D/StatusBar.NetworkController( 2598): updateIconSet, voice network type is: 13/LTE, data network type is: 13/LTE
To me, this looks like I might be seeing issues with some failed attempt to use voice over lte (as this phone supports it).
Regardless, does anyone know how I can disable voice over LTE? There was an option in the phone menu on the Z3 supposedly that would let you toggle, but I don't see it anywhere on this.
I'm going to be cross posting this in the sony forums as well, so if I hear back I'll post here.
Fixed it. I turned it onto 3g and selected "Internet settings" from the networking menu, which seems to have downloaded some configuration stuff from my carrier. After switching back to 4g I have fully working data.
I have a CDMA Samsung Note 3. The phone can run on GSM networks just fine. First initial problem I had was I couldn't get any signal strength to do anything. Now I can text and use data, however attempting to place a call immediately ends like within a second. What setting would cause this to happen?