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X1i when using 3G on AT&T I cant make or receive calls???

So when I leave all the band settings to auto on the phone, it immediately connects to AT&T's 3G network and shows the "H" in the title bar it worked for a little while then calls stopped coming through, after a hard reset it works again with calls for a few hours, then it begins to fail.
If I switch the bands to GSM and manually select the frequencies (850 + 1900, according to wm) then it connects to the EDGE network, and I can make and receive calls as I please, no problems, except for the crappy network speed.
So someone help me out here please, is the phone defective, or is it not working as it should because of the lack of the 850 band? I know that AT&T works on either or but this problem has me stumped.
Other than this rather huge problem (phone that cant make calls), I absolutely love the Xperia and would hate to return and wait for another.

did you try to use the connection wizard to let the phone config itself?
after I put my iphone sim in it shows the H/3G icon on anf off all the time, while I can receive call I was unable to go online.... after someone suggested me to call att to update the imei on my account to the x1, I found that I still have to go to connection and change the setting myself b4 it can go online. you will have to remove the user name and pw in media net setting and uncheck the proxy server.
I guess my case is a little different than yours but I guess you can give it a try... good luck =)

Thanks, I actually haven't tried that since i figured it would be the same as what happens when you turn the phone on for the first time, when it autoconfigs.

if it say it detect a new sim and ask if you want to do the auto config then I guess its the same... but again I did need to change some settings inside the network config to make it work too... so I am guessing the "auto config" has some flaw in it

No problem with my X1i when I venture in a1900mhz area close to my home. I live in a small town in Ca. only 850mhz here. But in the larger Metro area around me... No Problems with calls or hspeed data access...
Stuart

Thanks for the replies, It looks like the Configuration wizard in the settings menu did the trick. It do something else that the autoconfig doesnt. The phone seems to work now just fine, although it doesnt hang on to the signal as well as my old k790a. The office I work in is an ATT dead zone and I could make calls using the K790a with only one bar, with the Xperia it either doesnt go through or drops the call.
Again this is better as it works now, just not as well as my old phone.
Also, scl_electronics, so you are saying the X1i has both 850 and 1900mhz bands? I had a feeling mine did too, but I thought it was put to rest that that wasnt the case with the X1i....

Sorry Aaron J,
i should have been more specific!! Where I live, 3G is only on 850mhz band so I don't get access..Just The edge network. When I venture about 10 mile away toward the major Metro areas..The 1900mhz band are used. So the H is displayed, but I don't have those access problems for calls or data!!
But i am waiting to see if they can crack the rom for 850mhz-3G access!!
Stuart

scl_electronics said:
Sorry Aaron J,
i should have been more specific!! Where I live, 3G is only on 850mhz band so I don't get access..Just The edge network. When I venture about 10 mile away toward the major Metro areas..The 1900mhz band are used. So the H is displayed, but I don't have those access problems for calls or data!!
But i am waiting to see if they can crack the rom for 850mhz-3G access!!
Stuart
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Oh ok thats kind of makes, sense although I thought the X1i didnt have an 850 band at all, so what frequency does it work off then?
Anyways, back to my problem....I spoke too soon, it dont work on 3G switched to EDGE. I might just try getting a new sim card, mine is a Cingular one from 2005, that has been in at least 4 different phones now including the X1i.

Aaron J said:
Oh ok thats kind of makes, sense although I thought the X1i didnt have an 850 band at all, so what frequency does it work off then?
Anyways, back to my problem....I spoke too soon, it dont work on 3G switched to EDGE. I might just try getting a new sim card, mine is a Cingular one from 2005, that has been in at least 4 different phones now including the X1i.
Click to expand...
Click to collapse
Well out here in Ca... 850mhz gsm/edge is used ..So I quad band gsm phone is handy!!!
Stuart

Yes it is! My little problem is a little confusing though as one thing I just realized that I didnt say before is that the phone has no problem connecting to the 3G network using HSDPA. I get full bars with the H icon pretty much everywhere in my area and my data speeds are very good. So I can surf the net, download programs, watch high quality youtube videos using the app in touchflo and even send and receive texts just fine.....just no calls when on 3G. I'm hoping its just setting somewhere and not a faulty device.
I live in Raleigh NC by the way so maybe it could be a faulty tower?

Well when venture into Stockton Ca. my phone switches to 3G-HSDPA:1900MHZ Without a connection hitch....
Have you tried a soft reset......
But when all else fails Hard Reset to the Rescue!!!
Btw... in several of my ppc-wm units when restoring to OEM setting(hard reset) there has been many time the process had a problem. So something would be screwed up!! So when You don't succeed, try another hard reset!!
Good luck,
Stuart

hey i was wonder if your problem is HSDPA/HSUPA being on, i have at&t also and it worked for the first few weeks fine with it being on then all of a sudden it stopped and couldn't connect to the internet, before i had the H/Edge showing up and also my email never updated when it was set to do it every 15minutes. Now that i disable the HSDPA/HSUPA i see 3G/Edge and email update all the time on the X1i. Just wonder if that might fix it, I'm all kinda still new to all this but i had my X1i for 2 1/2 weeks now.

Hello thanks for all the suggestions, Experiaenjoy, no I haven't tried mainly because I can connect to the data network just fine and get awesome speeds with full bars pretty much everywhere, all of my data related activities and programs work just fine (aka murder my battery life ). I just cant make calls while on 3G.
I talked to a coworker today who used to be a regional manager at AT&T hee said that he saw many cases of people who were having problems where it was due to the SIM card. He said they all had the older orange Cingular card and that an update to the new blue AT&T card solved all problems. So right now I'm trying to see if I can get mine updated (I do have an older Cingular SIM). Once I get that, I will do a hard reset (3rd one also done about 20 soft resets since I 've had it-I've installed a bunch of programs and tweaks) and skip the auto config and go straight to the connection wizard.

Forcing G1 to Roam

I'm going camping this coming weekend to a place in the mountains that tmobile has very poor coverage in. I was there last month and discovered my friends at&t phone had full service while my g1 showed service, just didn't show any bars and other times only showed one bar. Calls with my phone were flacky and dropped out, his worked perfectly. Is there a way to make my phone switch to roaming on at&t?
I have a national plan on T-Mobile.
I'm running Cyanogen 3.9.5
Thanks!

nickwinn said:
I'm going camping this coming weekend to a place in the mountains that tmobile has very poor coverage in. I was there last month and discovered my friends at&t phone had full service while my g1 showed service, just didn't show any bars and other times only showed one bar. Calls with my phone were flacky and dropped out, his worked perfectly. Is there a way to make my phone switch to roaming on at&t?
I have a national plan on T-Mobile.
I'm running Cyanogen 3.9.5
Thanks!
Click to expand...
Click to collapse
Should do it automatically. I saw my phone do this the other weekend when I was travelin. My phone showed ATT, Corr Wireless, and some other service and certain points.

The tmobile signal is just strong enough to keep it from roaming there. I was hoping it would switch automatically but it never did. I know the phone does have roaming ability, i've seen it switch to roam and work fine.

I would assume then just change your APN settings.

you can try manual operator selection, by going Settings > Wireless Controls > Mobile Network Settings > Network Operators > Search Networks then select whatever network you want to use

Hi.. I'm using CyanogenMod 3.6.8.1 on my HTC Dream and I've got the same issues with roaming. I've travelled to 3 countries last month and I had issues with connecting to GSM network.. There was error message that my sim card cannot work with specific networks.. I've tried to use auto connection and I've tried also to connect manually to specific networks, but with the same result. I've tried also rebooting and removing the battery... Problem disappeared after few hours... I had this issue in Austria, Hungary and Turkey so it's not operator/country specific. Problems doesn't exist on different cell phone (Nokia). Everything works fine after powering on the phone.

3G connection issues

I'm having random 3G connection issues on my Samsung Focus.
At radndom times 3G connection is lost and the only way to get it working is to turn off and on the phone.
I tried putting the phone into airplane mode, turn off/on data, turn 3G off/on, nothing works, only a reboot works.
Today I checked my email on my phone and it says;
Last updated 4 hours ago
We're having a problem connection to exchange.xxx.com. Try again later.
Last tried 2 seconds ago
Error code: 80072FA8
This error shows up on all 3 emails I have setup.
IE doesn't work, Zune, any app requiring 3G connection.
And this happens at random times, at least once a day.
The phone has the lastest updates and is jailbroken.
One other thing to mention is, the phone is now having the 3G connection issue but i have it theathering to my computer and the internet connection is working while theathered, cause i'm posting this email.
I have no idea what's happening or how to fix it.
Thanks

same with me. are you using another carrier ???
Mine is unlocked AT&T Focus, when I'm using indosat (IM3) carrier, I'm having this issue. I downloaded Network Profile from Samsung Zone. After reboot the device, the network profile still pick AT&T, and I can't change it to my carrier.
Then I tried change my carrier to 3, after reboot the phone, the network profile changed to 3 INA. And after that I haven't got that issue till now.
Not sure what caused this. But when I looked at the registry there's a bunch of duplicated APN settings.

I had a similar issue, Focus AT&T on EU network.
Chevron unlocked and enabled the 3G toggle.
From time to time, I couldn't download from Marketplace or use the 3G connection. That was before I updated to NoDo. I haven't experienced this again since I updated.
To fix that, I used to toggle 3G off and on again after 15-30 seconds.
Sometimes, even that didn't work and I had to leave 3G off. Any lower data connection was working while 3G wasn't.
Speaking of data connection, not everyone is aware that after updating to NoDo, HSUPA is disabled on AT&T.

I'm having the same issue.
I´m using an unlocked at&t samsung focus at my local carrier.
I have this issue a few times a day, and the only way to restore my internet connection is rebooting.
I have noticed that this happens when my phone changes to Edge and goes back to 3G again. The issue doesn't seems to happen every time, but sometimes I lost connection.
Did you managed to solve this?

Same here
Using it with mtvmobile italy
Have to reboot everytime

I was having the same issue, being unable to connect to 3G. Just go the first page after Googling: set att apn. AT&T users should put in the APN, username and password. Hope it helps! It worked for me. =D

I´ve the same problem, here at Costa Rica with my focus which is not unlocked nor jailbroken

CRDeveloper said:
I´ve the same problem, here at Costa Rica with my focus which is not unlocked nor jailbroken
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Click to collapse
Did you solve this problem, I'm in Costa Rica but have issues with 3G connection... :-(

[Q] Mobile Data not working

Hello all,
I have resorted to posting here as i have trawled the web for a solution without any luck. Here is my problem hope you can help.
I have a nexus 4 and am currently in Spain. After traveling abroad and not using data roaming i came back to Spain to no mobile data connection. The usual tricks of restarting, toggling mobile data airplane mode didn't work. It was quite frustrating. I went as far as to cancel my contract and go for a prepaid card - Lebara as they have a decent data tariff - but the problem persisted. I have configured the APN, gone through all the restart procedures, even factory reset the phone twice and nothing helped.
Mobile data is switched on. I have the APN set up as needed. However, the H E H+ never appear next to the bars on top no matter what i do. I have ordered another SIM card from a different operator in desperation but it might not be here for another week.
I really hope it is not the phone but now I really don't know. I am taking suggestions...
Thanks
PS one thing I just noticed is that if I download apps from my browser the device is listed as vodafone nexus 4 although I have never been on vodafone. This might have some relevance

tiobojo said:
Hello all,
I have resorted to posting here as i have trawled the web for a solution without any luck. Here is my problem hope you can help.
I have a nexus 4 and am currently in Spain. After traveling abroad and not using data roaming i came back to Spain to no mobile data connection. The usual tricks of restarting, toggling mobile data airplane mode didn't work. It was quite frustrating. I went as far as to cancel my contract and go for a prepaid card - Lebara as they have a decent data tariff - but the problem persisted. I have configured the APN, gone through all the restart procedures, even factory reset the phone twice and nothing helped.
Mobile data is switched on. I have the APN set up as needed. However, the H E H+ never appear next to the bars on top no matter what i do. I have ordered another SIM card from a different operator in desperation but it might not be here for another week.
I really hope it is not the phone but now I really don't know. I am taking suggestions...
Thanks
PS one thing I just noticed is that if I download apps from my browser the device is listed as vodafone nexus 4 although I have never been on vodafone. This might have some relevance
Click to expand...
Click to collapse
Go to the dialer, press*#*#4636#*#* this brings you into new menu. go to the phone information to see to what network you are connected. if you scroll down you can force the phone to use 3g (WCDMA only) see if this work. this seting will change when the phone goes into reboot.
also if you happen to have the "3g bug" connecting to a wlan might help as stated by some users.
For me starting the hot spot function does the trick.

endet said:
Go to the dialer, press*#*#4636#*#* this brings you into new menu. go to the phone information to see to what network you are connected. if you scroll down you can force the phone to use 3g (WCDMA only) see if this work. this seting will change when the phone goes into reboot.
also if you happen to have the "3g bug" connecting to a wlan might help as stated by some users.
For me starting the hot spot function does the trick.
Click to expand...
Click to collapse
Thanks for the advice endet. I have done this but to no avail. When I switch to WCDMA only in the field GPRS service it says connecting for about a minute and then disconnected. After restart it is directly disconnected. I have toggled between GSM only and WCDMA only and restarted the radio. Played with the other settings in this screen and nothing. Only once did I get brief flash of the H on top but trying to replicate the steps didn't lead to anything.
Starting tethering didn't help either...
Could be something with my IMEI? Or CellInfoListRate?

[Q] How can I get 4G back?

I updated the PRL on my Note 3 using the dialer code. Ever since my phone won't connect to 4G LTE. I'm running Eclipse, not sure if that matters. Is there a way to get 4G back?

hehe i knew this would come in handy. Had the same happened to me. service menu 27663368378 > UE SETTING & INFO > SETTING > PROTOCOL > CDMA > EFS PROFILE > eHRPD PROFILE > SET TO VZW DEFAULT. Then restart. Problem should be fixed.

6d00z said:
hehe i knew this would come in handy. Had the same happened to me. service menu 27663368378 > UE SETTING & INFO > SETTING > PROTOCOL > CDMA > EFS PROFILE > eHRPD PROFILE > SET TO VZW DEFAULT. Then restart. Problem should be fixed.
Click to expand...
Click to collapse
Thanks for the suggestion, but the service menu doesn't work with the Eclipse ROM. The longer version of my problem is that I went on Vacation, and was getting poor reception. The coverage map seemed to indicate I should be getting better reception, so I tried to update my PRL. That is when I lost 4G completely. Upon arriving back home, I updated my PRL again while in an area I knew I usually got full bars of LTE. Now I get LTE, but it drops back to 3G after a few minutes if I'm not actively downloading anything. To get LTE back, I have to cycle airplane mode.
I may try to flash a rom that the service menu works with and try what you suggested when I find the time.

have you tried [APP][1.6+] CSC Changer + Refurbishment Check + Phone INFO
MongarEric said:
Thanks for the suggestion, but the service menu doesn't work with the Eclipse ROM. The longer version of my problem is that I went on Vacation, and was getting poor reception. The coverage map seemed to indicate I should be getting better reception, so I tried to update my PRL. That is when I lost 4G completely. Upon arriving back home, I updated my PRL again while in an area I knew I usually got full bars of LTE. Now I get LTE, but it drops back to 3G after a few minutes if I'm not actively downloading anything. To get LTE back, I have to cycle airplane mode.
I may try to flash a rom that the service menu works with and try what you suggested when I find the time.
Click to expand...
Click to collapse
heres link. free from playstore should work around the google dialer. http://forum.xda-developers.com/showthread.php?t=2609045
also the "activity launcher" app from the play store may help as well

Hehe i use that app to get inside the service menu. Since dialing the code doesnt work on the stock verizon rom. Served me well.

LordOfTrance said:
heres link. free from playstore should work around the google dialer. http://forum.xda-developers.com/showthread.php?t=2609045
also the "activity launcher" app from the play store may help as well
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Click to collapse
Nice!

I tried going back to the MJE modem, problem seemed to get worse. Went back to the NC4 modem and updated PRL, and LTE seems to be sticking now.

What procedure did you use to update the prl. Honestly prl update on their own so I dont know why you decided to do this

drewcam888 said:
What procedure did you use to update the prl. Honestly prl update on their own so I dont know why you decided to do this
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I was on vacation in LA and was getting terrible signal wherever I went (coverage maps indicated I should have had a good signal most places). I figured it would be a quick thing to try. I dialed *228 to do it. I thought it was a long shot that it would fix anything, but I figured it couldn't hurt.

MongarEric said:
I was on vacation in LA and was getting terrible signal wherever I went (coverage maps indicated I should have had a good signal most places). I figured it would be a quick thing to try. I dialed *228 to do it. I thought it was a long shot that it would fix anything, but I figured it couldn't hurt.
Click to expand...
Click to collapse
*228 Should never be uaed on a 4G phone it could easily mess up your phone like it seemed to do. PRL are automatically pushed to 4G devices. I don't undwrstand how but you can supposedly ruin your sim card by doing it.

Interesting. I'll try swapping sim cards with my tablet. I'm traveling again, and LTE isn't working now that I'm in Atlanta. It was working this morning in DC. That service menu setting didn't seem to help.

I swapped sim cards with my tablet, and both devices had LTE. Did a speed test, and they both got above 15 Mbps. When I swapped the cards back, my phone once again failed to connect to LTE. I don't have any idea what information sim cards hold, but it seems weird that my phone sim card works fine in my tablet but not in the phone. I guess I'll be getting a new sim card.

MongarEric said:
I swapped sim cards with my tablet, and both devices had LTE. Did a speed test, and they both got above 15 Mbps. When I swapped the cards back, my phone once again failed to connect to LTE. I don't have any idea what information sim cards hold, but it seems weird that my phone sim card works fine in my tablet but not in the phone. I guess I'll be getting a new sim card.
Click to expand...
Click to collapse
Don't do *228 anymore also that way you save your sim card.

I'm still confused why the "bad" sim card works fine in my tablet.