Database Develop

3G No longer working?

I live in the Chicago area and am testing out AT&T service and the Tilt (thinking of switching from Verizon). Anyway, late last night the Tilt started searching for signal and could not find the Voice or Data network. I tried doing a hard reset... still nothing. When I got up this morning, it was still searching. I tried another hard reset, and now it is able to get on the voice network. The data network is working as well, but only as Edge, as it does not seem to see 3G capabilities anymore.
My question is do you think this is an issue with the radio, the SIM or simply AT&T's network. I was using 3G with no issues since Friday. The phone is brand new and was working flawlessly until last night. I did not perform any tweaks, or install any software other than Flexmail.
Your input is appreciated.
SC

Dont worry, it could be just a network (provider) issue.
I got 3G signal at home, but sometimes (very rare) I got GPRS only
It will be ok

i am in chicago and all of today couldn't get on 3G, I hope it is network because I didn't change anything from when it was working till now

I don't think this is a network problem. For 2 days everything was fine. Now, mine does the same thing as eras2r. Works fine on Edge but when I am on 3G, it not only fails to connect for data, but it also kicks me off the voice network. Takes about 5 minutes or more to reconect. Sometimes it throws me out when 9n 3G area for no reason. AT&T told me to return, but since I was Premiere, I could only do an exchange. Total suck. Hopefully I get my new one and it won't have this prob.
Turns out it was a radio ROM problem. Need to make sure you are using:
ftp://xda:[email protected]/Uploads/Kaiser/Radio/KAIS_Radio_Only_1.27.12.17_CustomRUU.rar
I had 1.27.12.11 and it was killing me, but now all is good in the World!

N1 - No 3G or HSPA!

Hi-
I have a Nexus One and I am having a problem where if I am in a location where there is HSPA available, then my phone loses 3G and HSPA connection. My phone has a 3G icon, but in the testing menu it shows that is keeps flipping back and forth between HSDPA and UMTS. Also the up arrow continuously flashes, but I don't receive any data back.
When I leave the area with HSPA service and switch to another tower which has regular 3G then my phone works fine. I figure the issue has to do with my phone missing something or having a corrupted file that is not letting it connect to HSPA service.
My phone had no problem connecting to HSPA earlier this week but all of a sudden I am having problems.
Anyone have any ideas?

I'm on vacation in Fort Collins, CO and have been having similar problems with 3G
only showing the up arrown and never downloading. I got sick of it and switched to EDGE for the time being. My wife has an N1 also and it is doing the same thing, so it looks like it's not the phone. I switched over to CM6 which has the 3G and H indicators and it will only download data with the H never the
3G indicator.
Rob

I also have the same problem. When I am on HSDPA my up arrow gets "stuck" and I lose all data connection. Here is a link with others having the same issue. http://forum.androidspin.com/showthread.php?t=2720&page=2

Have a look at your apn settings in menu I had that prob and switched a few this around and got it kinda working
Sent from my Nexus One

my build.prop file was apparently missing the necessary entries in it. I flashed CM6 and now it works again, although my phone now thinks I am in Phoenix instead of Dallas.

Phone was working fine then all of a sudden doesn't work. No change in the settings. Has to be network related.
Starting at around 1AM EST last night 7/11 and running until this moment I have been going back and forth between Service, No Service 3G no 3G, able to place a call and unable to place a call.
My bet is there working on the network with this new HSPA+ roll out. The problem seems to be in markets that are expecting the roll out. I live in Jacksonville Fl. Up until last night I had flawless 3G and Data. It was terribly fast but I had it.
Now over the last 12 hours or so 3g Voice and data has been intermittent with no settings made to the phone.

Data connection is suddenly not working

After 2-3 days of not messing with the phone anymore (flashing, putting root apps, etc) my somewhat alright LTE signal has now turned into 3G with no circle around it meaning it's connected to the network, but not actually getting data. It happened while I had the phone in standby for a few minutes, so I can't think of any one app that caused it. Reinstalled rom even after a full wipe.
The strange thing is I will sometimes get a faint signal of 3G which then dissapears within a minute. I did the latest OTA before I flashed my rom so I should have the newest radios and everything. I can't update profile either. My family is getting good signal so I know it's something with my phone. Any ideas?

Happened to me too..I re activated with Hands Free activation to reset the data connection to Sprints network..Only worked twice for me through out the day then the phone was just stuck in the same spot as yours (3G with circle around it). Nothing we did reset the data link to sprints network(cust. svs rep).I brought the phone back to where I bough it and they didn't allow an exchange unless they held the phone over night to test it..I didn't have time for it and everything i hear about the Triband set up Sprint is doing not allowing data while in a call and the growing pains of the network rebuild have worn down on me after 10 years so i had to return the phone and buy it on a network that allowed the phone to operate the way it was meant to..

When I first got the phone, it would hold an LTE signal much better than my m7. Then last night I notice LTE cutting in & out where it was pretty stable before. I check it was trying to connect to Band 26 which is 800 LTE. It might have been from a further away tower. This was the first time I have ever seen Band 26 in my area which is currently being deployed. The constant cutting in & out also drains my battery down. This has nothing to do with my phone but the towers which my home tower has been having issues since last July. For now I set my phone to CDMA only since I have wi-fi at home & work anyway I don't need the phone on LTE. Even when LTE was working on 1900 which was stable, the signal was still pretty week and would drain more batter than a strong 1X signal. Since LTE is data only right now, there is no reason to have the phone prefer LTE when wi-fi is on. With CDMA only it's not bouncing around all over the place.

Resetting 'band' setting changed from test *#*#info#*#* menu?

The short:
I changed the "Select radio band" setting in the test menu (*#*#info#*#*) and it screwed things up.
I wiped and reflashed CM12.1 - but it didn't reset that setting (it's still borked).
Does anyone know where it stores that setting, or how to reset it somehow?
The long:
Initially in CM12.1 I was having problems staying on LTE - it always fell back to 3G and stayed there.
So tried this band change that someone who had the same problem suggested.
Now, every option I try is great for LTE but says "cellular network not available" and I can't make calls.
The exception is "Cellular" which I can make calls but only get 1X data.
These are the options in the menu:
"JAPAN Band (WCDMA-800/WCDMA-IMT-2000)"
"USA Band (GSM-850/PCS-1900/wCDMA-850/WCDMA-PCS-1900)"
"Cellular (800-MHz)"
"PCS (1900-MHz)"
I don't know what it was before and I can't see figure out how to tell what it currently is set to.
I just want to flash back to stock so things work again, but if this setting doesn't get reset then I don't know if that will work anyway.

Any chance settings like that are stored on the SIM card?

try to re-flash radio only

masterchapter said:
try to re-flash radio only
Click to expand...
Click to collapse
Worth a shot, but doesn't seem to have helped.

Try the instructions here: http://forum.xda-developers.com/showthread.php?p=57778872
I seemed to have luck when I made the changes according to this post and then immediately ran the ping test. I don't know if the ping test really did anything to help but I've had cell service since following these steps.

mh0520 said:
Try the instructions here: http://forum.xda-developers.com/showthread.php?p=57778872
I seemed to have luck when I made the changes according to this post and then immediately ran the ping test. I don't know if the ping test really did anything to help but I've had cell service since following these steps.
Click to expand...
Click to collapse
Unfortunately that's what I did initially. The setting in that link ("Cellular") made my calls work, but I could only get 1X data.
So somehow by just flashing and reflashing different things (including failing to reflash to stock), it's back to where it was when I started.... which sucks, but is at least useable. Calls work and data works, but the first time it has to drop back from LTE to 3G, it get stuck in 3G forever (until airplane mode). Super sucks since it's my primary home router tethered. I have to airplane mode like 5 times a day.

Just in case someone else ran into this problem, I ended up getting a new sim from Verizon and everything's working now finally. It still says "000000" when it's in 3G, but I don't care about that - it works and it goes back to LTE when it can, rather than staying on 3G forever.

Works for Moto X play - should work for others too..
I too did the same mistake. Changed my Band to "USA" and couldn't restore to previous despite Factory reset.
The SIM 1 went into 4G data only (No voice) , didn't recognize 2G & 3G network for any sim.
However Sim 2 worked fine for 2G,3G & 4G.
i came across a thread in XDA, and after breaking my head over how to execute it, I finally did it.
I have written a brief guide to it. Here's the link.
http://forum.xda-developers.com/moto-x-play/help/network-band-changed-to-usa-t3278614#post65991684

Cell radio drops randomly in US after having used foreign SIM

Trying this forum before I commit to re-flashing ROM.
I'm running lineage 14.1 on an HTC 10, and since I went thru using my phone with UK, Canadian and Mexican SIMs, my radio will randomly completely lose signal on a US SIM, and it seems more frequent when I allow LTE than when I have it set to UTMS only, though it still happens then.
I have to go into #*#*4636*#*# and toggle between gsm only and gsm+LTE, sometimes reboot my phone, and eventually I get signal back with full LTE.
It seems to me like my phone stops searching for towers until I prompt it to do so again by messing with its config and rebooting.
Looking for any ideas before I decide to reinstall my system.