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3G drops to GSM when receiving calls and during calls

I searched all the threads and found nothing on this as far as I can see. I have been having this since day one with my G1. Every time I receive a call on my G1 or during the call it drops from 3G to GSM. I had stock T-Mo roms on my G1 (Pre/Post Cupcake) then JF 1.51 and now cyanogen 4.0.2 and this problem persists. I called T-Mo a few times on this and they exchanged my G1 3 times and gave me a new battery and charger free of charge. Does anyone else have this issue or know of a work around? This happens when I am at home and work. I travel for work to different locations and it still happens. When my phone rings it automatically drops 3G and goes to GSM (no icon next to the radio icon in the status bar). While making calls it stays on 3G for about a few seconds before it craps out and drops to GSM. It totally skips EDGE and GPRS. T-Mo said they sent out radio antenna tech's to the antennas near my home and they said all is fine and dandy. I live In Queens NY and work in the Bronx. When I travel to Brooklyn its the same as well as driving though Manhattan. I hope someone can help me with this.

PeterC18st said:
I searched all the threads and found nothing on this as far as I can see. I have been having this since day one with my G1. Every time I receive a call on my G1 or during the call it drops from 3G to GSM. I had stock T-Mo roms on my G1 (Pre/Post Cupcake) then JF 1.51 and now cyanogen 4.0.2 and this problem persists. I called T-Mo a few times on this and they exchanged my G1 3 times and gave me a new battery and charger free of charge. Does anyone else have this issue or know of a work around? This happens when I am at home and work. I travel for work to different locations and it still happens. When my phone rings it automatically drops 3G and goes to GSM (no icon next to the radio icon in the status bar). While making calls it stays on 3G for about a few seconds before it craps out and drops to GSM. It totally skips EDGE and GPRS. T-Mo said they sent out radio antenna tech's to the antennas near my home and they said all is fine and dandy. I live In Queens NY and work in the Bronx. When I travel to Brooklyn its the same as well as driving though Manhattan. I hope someone can help me with this.
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ive always had this as well .. just never considered it a bug lol ... but i could see why someone would wanna keep their 3g while on a call .. reminds me of how sidekicks would lose data connectivity due to a call

xidominicanoix said:
but i could see why someone would wanna keep their 3g while on a call .. reminds me of how sidekicks would lose data connectivity due to a call
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Could you elaborate?
If you've had 3 G1's and a tech says there's nothing wrong with the network then it's clearly an issues with cupcake, be it a feature or a bug...
I don't really see why you would want to keep data conectivity while in a call, (unless you're downloading something in the background..?) so it sounds like a way to save battery..

AdrianK said:
Could you elaborate?
If you've had 3 G1's and a tech says there's nothing wrong with the network then it's clearly an issues with cupcake, be it a feature or a bug...
I don't really see why you would want to keep data conectivity while in a call, (unless you're downloading something in the background..?) so it sounds like a way to save battery..
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Here's a perfect example where 3G would rule when working properly.
I'm talking to my wife on my BT headset while driving home from work. I have my G1 on my dash with google maps running with traffic patterns showing. While talking I am able to talk clearly on 3G and still see where traffic is building so I can avoid it. Being stuck in rush hour in NYC sux homeless man [email protected] Whenever I do this and my 3G connection drops my call quality drops and we both hear it while we're talking and then it cuts in and out and the call drops then I dont get updates. It's a feature I would really like to have. Even when Im working and talking and downloading a new update of an app. This happens when I am at a static location as well. I know driving from cell tower to cell tower can have bad effects but it does the same when I'm just at home or any of my work locations. When 3G works properly which is rare its amazing. Its helped me get un lost and find my way many of times.
Point being when T-Mo released the 3G statement they said all users with 3G phones will expierence higher call quality from the extra bandwidth. Why would they cap or or disable it when they are promoting it? I see the the point of saving battery life but it still shouldnt be happening. 3G is made for that feature to work voice + data being accessed together.

It might just be there 3g network, imo tmobile reception is horrible. Like at my house it is so f'ed up, I can sit in my chair and have 3 bars then walk 2 feet and lose service. It does this all through my house and at my work. They said it must be something in the buildings I am in, bull**** I say because ATT never does that nor did vzw when I used them.

same thing happens with me and 3g and calls..also about the house thing, hows this one for u ill be sitting in the same spot and have good 3g reception and all of a sudden it drops to edge. I know a way around this is to set phone to 3G only but then in areas where theres non im screwed

I don't get it. My wife who had the original iPhone and then 3g and now 3gs never had this issue. She would stay on Edge and 3g depending if she waned to save batery life. My old BB 8700g would always stay on Edge never drop to GSM in my apartment. My 3G doesnt even fall to Edge it goes right to GSM. This is really annoying.

every t-mobile phone I have does this
I'm pretty sure its normal

No one knows if this is a hardware, software, or network problem. Except maybe HTC/T-Mobile/Google.
If your phone stays connected to 3G, it's all good. If it drops down to EDGE, even if for half a second, it will NOT reconnect to 3G until you hang up.

c2tmdsn said:
every t-mobile phone I have does this
I'm pretty sure its normal
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My coworkers Samsung t819 doesn't. That's regular cell phone not a smart phone.
Gary13579 said:
No one knows if this is a hardware, software, or network problem. Except maybe HTC/T-Mobile/Google.
If your phone stays connected to 3G, it's all good. If it drops down to EDGE, even if for half a second, it will NOT reconnect to 3G until you hang up.
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If any of those 3 know they should fix it or at the very least advertise that the calls you make are dropped to the lower bandwidth of the GSM network.
T-Mo finally got 3G for the last year don't dumb it down guys. Fix this.
Yes it is true once your phone drops beneath 3G it will not go to 3G until you hang up the call.

try running 3g only or wdma only by creating phone info shortcut on anycut .. im going to try that out and see if it ever drops .. should be a temporary fix for you atleast with the whole maps thing and such but if you ever in an edge only are your screwed

turboyo said:
try running 3g only or wdma only by creating phone info shortcut on anycut .. im going to try that out and see if it ever drops .. should be a temporary fix for you atleast with the whole maps thing and such but if you ever in an edge only are your screwed
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I changed it to wcdma only in phone info. Hopefully this works. Everywhere I travel to throughout NYC has 3G. Hopefully this works. Also I have noticed that when downloading anything from 3G be it the market or browser it would drop from 3G to Edge as well.

PeterC18st said:
I changed it to wcdma only in phone info. Hopefully this works. Everywhere I travel to throughout NYC has 3G. Hopefully this works. Also I have noticed that when downloading anything from 3G be it the market or browser it would drop from 3G to Edge as well.
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*UPDATE*
While at home downloading apps from Android Market on 3G with wcdma only selected the radio dropped with no netowkr connection. Bust.

PeterC18st said:
I don't get it. My wife who had the original iPhone and then 3g and now 3gs never had this issue. She would stay on Edge and 3g depending if she waned to save batery life. My old BB 8700g would always stay on Edge never drop to GSM in my apartment. My 3G doesnt even fall to Edge it goes right to GSM. This is really annoying.
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Did she use att or tmobile with the iphone? Because att has a much stronger 3g network then tmobile which could be why. I am pretty sure it is something to do with tmobiles network and not your phone, perhaps your area has to many users for it to stay on 3G. I have read about how the cell towers work and they have only so many bands for each user to access at any given time so if tmobile doesn't have enough towers or those things mounted on the towers it may be set up so you only get 3G for data usage and not calls since they don't technically require it to work.

crpercodani said:
Did she use att or tmobile with the iphone? Because att has a much stronger 3g network then tmobile which could be why. I am pretty sure it is something to do with tmobiles network and not your phone, perhaps your area has to many users for it to stay on 3G. I have read about how the cell towers work and they have only so many bands for each user to access at any given time so if tmobile doesn't have enough towers or those things mounted on the towers it may be set up so you only get 3G for data usage and not calls since they don't technically require it to work.
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My wife is on ATT. Isn't lower frequency better at penetrating through walls and such? (T-Mo 1700 MHz and 2100 MHz compared to ATT 1800 MHz) They haven't booted their 850 MHz antennas yet so I hear.
If that is true then why not boot me down to Edge or gprs why all the way down to gsm? I been living in the same area for 26 years. I have been with T-Mo before they even had antennas in my area and walking outside was the only way to get a signal with my phone. Now I get full reception in and out of my apartment and 3G connectivity in my apartment with a signal strength of -93dBm through out my apartment on 3G and -79 dBm on Edge.
T-Mo stated that this should not be happening. Hence the 3 phones new battery and charger and techs to the antennas. I'm starting to think its a HTC Android problem and not a T-Mo problem. Hopefully a new radio update can fix it.

I didn't even know GSM was still used in that way, I thought GPRS would be the bare minimum. How can you tell the difference? I use to only get a G icon and I looked it up and for the g1 it said that meant GPRS, what does it show for GSM? Not like any of this matters though.
I really have no idea why all this is happening to your G1 but I hope it gets resolved, good luck.
edit: on the tmobile coverage map it says edge/gprs and 3g, no gsm. does that make any difference? I checked for NYC overall not any specific boroughs.

crpercodani said:
I didn't even know GSM was still used in that way, I thought GPRS would be the bare minimum. How can you tell the difference? I use to only get a G icon and I looked it up and for the g1 it said that meant GPRS, what does it show for GSM? Not like any of this matters though.
I really have no idea why all this is happening to your G1 but I hope it gets resolved, good luck.
edit: on the tmobile coverage map it says edge/gprs and 3g, no gsm. does that make any difference? I checked for NYC overall not any specific boroughs.
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GSM is what Edge Gprs and 3G run off of. Think of it as a progression. GSM>GPRS>EDGE>3G.
The way I know it is on GSM is to the left of the Radio icon on the home screen there is another icon that shows the network your on. 3G=3G E=EDGE G=GPRS and no icon means GSM. GSM is still being used. Most SMS and MMS messages get sent to your from through GSM while you are on a call.

Problem with auto switch between GPRS and 3G/HSPDA

Hi,
I seem to be having issues with my S3 (on 3) where if it rolls back to GPRS when out of 3G/HSPDA coverage it will then not switch back again when I enter 3G coverage.
Has anyone heard anything similar, more with the phone than the network in question (Three)? I recall hearing one of the phone support people mentioning that this was a known issue, but can't recall if it was this exact problem.
Anyone?
Thanks.

Data Connectivity Dropping Cured

I just wanted to share my experience with some issues I had with my cell connectivity randomly dropping during the day and then randomly coming back. AT&T was no help what so ever and their only solution was to wipe my device (I'm rooted).
The Cause: Crappy LTE coverage in my area
I live between two towers that offer LTE coverage in my area, but not close enough to one or the other for them to connect. I solved the random drops by disabling LTE in the networks menu and then also going to *#*#INFO#*#* and using GSM only in that menu. I miss no more calls and everything works now. Apparently the phone was trying to get on LTE, succeeded in a handshake, and then didn't have enough signal to continue. It would then drop and try to reconnect several times before attempting to jump back on the GSM tower I can throw a rock and hit.
I can only hope AT&T gets their crap together and I hope this helps anyone with similar issues

Please Report If 3G Is working (or not) On Your MXPE

Edit: Problem has been resolved. See thread linked below in this first post.
Original Post:
Please confirm whether or not 3G data works on your MXPE and report which carrier you are using. If an MVNO, please
report the network affiliation.
I am using Ting on Sprint network and my 3G data does not work.
I described the problem In this thread: http://forum.xda-developers.com/moto-x-style/help/3g-data-t3233752
I'm working with Ting and Motorola to troubleshoot the problem. I am aware of 3 phones counting mine that do not get 3G data. Trying to ascertain whether this is a fairly isolated problem, if all MXPE phones have the issue, if this is a Sprint issue, or if it is a Ting or other MVNO issue on Sprint.
To summarize: Voice, text, LTE and 1X data all work. 3G data does not work although twice I was able to get it to work for less than 1 minute. It makes no difference if I am in an LTE area or not. SignalCheck Pro mostly reports the 3G data connection as "unregistered" although sometimes it reports it as "inactive". A SIM swap from a Sprint SIM to a Ting SIM made no difference (exact same part number). Various factory resets and carrier wipes also made no difference.
Another symptom is that my phone will not activate unless I have a Wi-Fi connection. Apparently the 3G data connection is needed to properly activate the phone.
Thanks much,
DC

Yes, on Verizon

I'm on Sprint, and when I'm in a low signal area (home), my 3G cycles on and off constantly. I came from a 2013 Moto X and did NOT have this issue. If Marshmallow update doesn't fix it, I will likely sell it and go Nexus 5x.

yes works on Verizon
Sent from my Moto X Pure Edition

Al three, LTE, 3G and 2G work on AT&T.

Looks like I am not alone here.
Mine is Moto X Pure Edition 32GB from Amazon.
I am in Singapore using Starhub.
I have LTE/4G or 3G, but it is like on and off.
Especially when I am on the train and the train goes underground, mostly i am not connected to internet.
It may show LTE or H, when I load FB, it will show me loading icon. That's it.
Hopefully this is a software bug.
It really pissed me off since my old phone Xperia Z Ultra has no issue at all in that area.
Anyone find anyway to fix it?
Thanks.

Thanks for the help. I also posted this request on a couple of other forums and even though the response was limited, there does not appear to be an issue with Sprint which leaves my phone or Ting as the problem.
DC

It works fine for me I'm on T-Mobile. Have you tried going into the settings and searching for cellular network? Because I had a strange issue where my LTE wasn't coming on. I'll post a screen shot of what I'm talking about.

This is in the settings where it says more.

As soon as I push cellular network it starts to scan then a list of providers pop up then I select my provider.

gokart2 said:
I'm on Sprint, and when I'm in a low signal area (home), my 3G cycles on and off constantly. I came from a 2013 Moto X and did NOT have this issue. If Marshmallow update doesn't fix it, I will likely sell it and go Nexus 5x.
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Turning off LTE in mobile network setting. That solve my problem for me. Personally I like to control network mobile manually. My old phone used to be completely manual means I can force my old phone to connect U.S. Cellular(3G) or Verizon(3G) while im in the 1x area.

joe1blue said:
As soon as I push cellular network it starts to scan then a list of providers pop up then I select my provider.
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Yes, I'm very familiar with that menu but it must be different for CDMA carriers. I get a new menu after choosing cellular network and one of the options (Preferred Network Type) is where I can choose LTE, 3G, 1X or Global. Makes no difference which I choose, 3G still doesn't work.
I've returned the phone to Motorola for a replacement.
DC

Just turned off 4g to see if 3g works since I always get 4g where I live. It works fine on Verizon.

I live un chile where the internet its not so good, but with aws i have a great experience
Enviado desde mi XT1575 mediante Tapatalk

Hi DC, I have the exact same problem as you. Wondering if getting a new phone from Motorola fix your 3g issue?

Thought I would test this since I'm on Sprint. Forcing 3g seems to work fine, downloading speedtest on 3g right now.
I am on MM and did not test on LP.

hmfish said:
Hi DC, I have the exact same problem as you. Wondering if getting a new phone from Motorola fix your 3g issue?
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I haven't received the new phone yet. Motorola took a bit longer than originally thought. The new phone is supposed to be here early next week. I'll report back after I get it activated and tested.
DC

hmfish said:
Hi DC, I have the exact same problem as you. Wondering if getting a new phone from Motorola fix your 3g issue?
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The new phone did not fix the issue. Still no 3G data. What carrier are you with? So far, other than a couple of overseas users, the only people I've found with the problem were customers of a Sprint MVNO.
Since I sent the first MXPE back, I've acquired an Airave because the Sprint signals at my house are a bit weak. Strange thing is that I do get 3G data when connected to the Airave but nowhere else.
DC

Update. After two Moto X PE phones, numerous factory resets, much research and testing, there is now a work around to this problem. The problem does not appear to impact any phones on the big 4 networks. It only impacts phones on a Sprint MVNO.
Thanks to all who participated in this thread.
There are now known eHRPD issues with Sprint and their MVNOs. The work around solution is to disable eHRPD. Sprint is working on changes to eHRPD that may resolve the issue permanently. Thanks to Ting for their persistence in helping get to the bottom of this problem.
DC

3G on Moto X Pure Edition.
Yes it works in some area's on T-Mobile, Does not work sometimes. Wish the range was better.

T-Mobile S5 on AT&T Network Dropping Service

I just wanted to see if anyone else has experienced this or knew of a fix. I have the t modeled S5 with AT&t network. My signal is constantly just going from full bars to dropping to none. Even when calling people I get a distorted sound (the signal going out) then the voice clears back up (gained signal strength). It's very frustrating and I was just curious as if anyone had any clue what's up with it.
Thanks
Tank