I have an LG Optimus F3Q (I'm a keyboard person) on T-Mobile. Rooted, stock. I've noticed that my wife and I will sometimes be in the same place and she with her un-rooted LG phone gets good 4G/LTE signal while I'm on 2G. I went to the T-Mobile store (did not tell them I was rooted, they didn't ask) and they gave me a new sim. That seemed to work ... for about 30 minutes. Then I got booted off 4G/LTE again. So I went back. They messed around with APN settings and stuff, still no permanent fix. But what I have noticed since doing that and learning a little bit about the network settings menu is I can manually get myself back on 4G/LTE by going into network settings>mobile networks>network mode and disabling, then re-enabling, GSM/WCDMA/LTE auto. (There is no "LTE only" mode for me to select.)
I printed out a logcat dump shortly after doing that successfully, but I know nothing about reading those logs.
Just for kicks I've tried adding an APN using epc.tmobile.com instead of fast.t-mobile.com but that one won't even connect me to the internet; perhaps I am doing something wrong in setting it up.
Anyone have any ideas here? I'd prefer not to have to go through several menus every time I want decent data service.
petegw42 said:
I have an LG Optimus F3Q (I'm a keyboard person) on T-Mobile. Rooted, stock. I've noticed that my wife and I will sometimes be in the same place and she with her un-rooted LG phone gets good 4G/LTE signal while I'm on 2G. I went to the T-Mobile store (did not tell them I was rooted, they didn't ask) and they gave me a new sim. That seemed to work ... for about 30 minutes. Then I got booted off 4G/LTE again. So I went back. They messed around with APN settings and stuff, still no permanent fix. But what I have noticed since doing that and learning a little bit about the network settings menu is I can manually get myself back on 4G/LTE by going into network settings>mobile networks>network mode and disabling, then re-enabling, GSM/WCDMA/LTE auto. (There is no "LTE only" mode for me to select.)
I printed out a logcat dump shortly after doing that successfully, but I know nothing about reading those logs.
Just for kicks I've tried adding an APN using epc.tmobile.com instead of fast.t-mobile.com but that one won't even connect me to the internet; perhaps I am doing something wrong in setting it up.
Anyone have any ideas here? I'd prefer not to have to go through several menus every time I want decent data service.
Click to expand...
Click to collapse
Just a piece of additional info: I've now noticed that I seem to get kicked off 4G when I make a phone call. So it seems like the phone is having some problem reinitiating its connection with the 4G data network ... ?
Related
Hello there I currently have an unlocked vibrant currently on the mobilicity network in Toronto, Canada.
The phone works well, no issues except for establishing and securing a connection with the network provider. Every time I go to an area where it loses service, like parking garages or subways it loses the connection- obviously- but when you get back to an area where there should be service I only connect to the roaming service. This is leading to extra costs since my plan has charges for that.
What I do now is when i go somewhere with no service i switch to flight mode. When i get back where there is service i have to usually turn the phone off and restart it and search for a network manually.
Are there any apps, hacks, or fixes that can stop me from seeing or detecting roaming services, and force the phone to lock on to my network provider's service?
I want to use it only in the current home zones, and if out of one, i accept the fact that the phone does not work at all. I am always in the coverage zone and never want to use it while roaming.
can anyone help?
At the setting, there is an option there Data Roaming, you need to check or uncheck it. Select the option that will prevent you from doing data roaming and that should fix your problem.
On the otherhand, I have a question for you. I have the same phone and same provider, mobilicity. Our problem is the 3g connection. It is spotty sometimes the 3g icon appears and then disappears. Does this happen to you? I noticed the problem occurs when I go under like basement when there is no signal. After resurfacing, I gell signal reception sometimes full but the 3g or data connection won't work. To solve this, we would usually shut down the phone and restart it. Do you experience the same problem? If yes, what was your fix. Thanks.
David
Same problem here. Any guidance will be appreciated.
I've done the suggestions for Wind but to no avail.
same mobile , same provider , same issue
hai guys i have the same issue , but my thing is more worser than you.....when ever i go to an underground parking my 3g gets turned off and wen i come out from that place i cant able to make or receive any calls .....i need to restart the phone to turn on the signal again...its really weird any one have the solution ?????
Hey all, I have a Vibrant on Wind, this is what I do.
Go to settings.
Wireless and Network -> Mobile Network -> Network Mode ->WCDMA only
This enables that you stick to Mobilicity's 3G network and not roam on the Rogers 2G network.
If you lose signal, you will not roam, but simply not be connected until you move out and pick up Mobilicity's signal again.
Hope that helps.
Mobilicity Fix.
I found this on Howard forumns:.... I know this post is old but the solution could help someone who recently bought a old for to get used to customization /flashing.>>> Hope its useful
From Post:
--------
It works!!! It totally works!!!! I love it! Thank you so much guys!!!! Now I don't have to restart my phone EVERY morning as soon as I pull out of the underground garage in my car!!!
Thank you, Thank you, THANK YOU!!!!!!
Dial: *#*#197328640#*#*
Click [1] debug screen
Click [8] phone control
Click [7] network control
Click [2] band selection
This is where you make a change, default setting is [1] automatic, which means it chooses automatically between gsm/cdma (Edge vs 3g). So we are going to change this and set it to wcdma band which is 3g.
Click [2] wcdma band
Click [1] wcdma all []
Now it should display “select wcdma all bands[*]"
Now on the bottom of your phone, click the menu key, it’s the one next to the home key, now click back, menu again one more time, back one more time, this is just to confirm it set to number 2 wcdma band.
Now click menu key one last time, click end.. and you are done. Now to double verify that the phone is locked into 3g, dial in: *#*#4636#*#*
Then click phone information Then scroll down to “set preferred network type” It should now have listed “wcdma only.” PS, if you tried to do a shortcut, and just set wcdma this way first without doing the lock above, it would just go back to gsm/cdma auto once you exit the screen.
Your phone should now be locked into 3g.
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Again found on Howard forumns and copied and pasted to word doc. to keep for my mum as she gets the phone.... I got her the the 27.50 holiday plan so she can call anywhere to anyone in North america with unlimited data....coverage is good so far...
P.S. i dont allow roaming as to not incure more charges.
I know this is an oldish thread but.
Trying to fix connection issues and the Dial code does not work for me. It just does nothing when I enter that. The only code that works is *#*#4636#*#* and that does not help me.
Anyone else having this issue and know why it's not working. I have an Amaze 4G. Only posting here about this phone because this is the only thread I could find related to my issue.
Searched all over now. Those codes are to be the only solution and they don't do anything on my phone.
Anyone have answers?
I have a mytouch 4g (it's actually the htc panache) that just suddenly wouldn't connect to the network after I restarted it. When I try to add a network manually, the only option I have is to connect to Canadian roaming...
I've searched all over for an answer but I can't really find any post with my issue. But before I jump in to it I thought I would provide background first to show where I'm at.
Htc thunderbolt -> One click rooted -> NAND made -> Wipe data -> flashed CM7 alpha -> Everything running smoothly (3g working before flash(3 weeks) and after flash(1 day) perfect).
Now, out of the blue, the 3g started to fail (day after flashing the rom). I get stuck on 1x (Note. I'm in 0 coverage for 4G). The mobile network type says unknown or CDMA-1xRTT (it changes back and forth a lot).
I restore the the phone from the backup (3g working one) and its in the same condition as it was in CM7, 1x or unknown or even no service.
Back in stock rom I dial the ##778# and the the enabling Rev .A. I commit, reboot, 3g!.... 1x... and it changes back and forth from there. So I also dialed the *#*#4636#*#* and change the unknown (or a 4g setting) to CDMA Auto prl. I get nothing, reboot, still goes between 3g 1x and nothing. It also force closes me often, is that normal?
Reflashed the CM7 and thats where it is.
I'm also in a strong 3g area, never get 1x. Another note is that it kicks off the "3g" i have when on the market or browser and says a Network error has occurred.
The majority of the time right now I have 1x or nothing (just 3-4 bars) with all these settings.
Any help or insight would be wonderful and greatly appreciated!. I've run out of ideas.... If any more data is needed just ask me.
[Edit]
So when changing the settings in the 4636 code I found it on CDMA only? I assume that favors 1x. So I change it to the Auto prl, then it force closes. I go back in to see its now on unknown, so I change it again. This time it sticks and 3g comes on. I'm not sure if I can trust this 3g or not. Any ideas?
Here's the deal, I bought my Rezound in 2012 and flashed it to PagePlus Cellular using CDMA WS.
I've used it and it's been fine, running CM10 most of the time. I just bought a Evo 4G LTE and switched to that. So I RUU'd my Rezound, and it says a SIM card is required, etc.. but there are no signal bars.
I go into About Phone > Network >
and Operater name is "Unknown," signal strength is "0", service state is "out of service."
Now, the question is, is that normal? Does the phone need a sim card to connect to verizon towers?
I don't want to sell it while it's not working. I did call up Verizon and they said the ESN was clear for activation though.
So if I sell it and the new user puts in a SIM card, will it clear up all the signal issues? Or have I done the RUU incorrectly? [I did it a couple times because it didn't work the first time (the SD card method, then I did fastboot method)]
Thank you!
That is not normal behavior and you may need to do some more work before you sell it.
Make sure all related network settings are correct for Verizon instead of GSM under Settings > Mobile Network menu.
Try entering on the stock dialer *#*#4636#*#* to access the hidden testing menu as well for the phone radio and verify it is on CDMA. If that code doesn't work on the dialer try it via an app like "Hidden Menus" or even "Battery Monitor Widget" by 3C (click "Tests" icon > Phone information from main page of app.)
Background: I broke off of my Verizon contract six months in and used my phone as a WiFi-only device (VoIP and internet texting apps) for the longest time. While I typically hid my signal icon and ran the phone in Airplane mode with WiFi toggled back on, I would occasionally turn my radio on to resync time and date to the cellular network. With no SIM in it clearly was syncing off Verizon CDMA signal still; I simply wasn't fully activated on the network any longer.
I just made the StraightTalk AT&T SIM card plunge the past couple of weeks and did an NV edit in CDMA WS as well, all alright on GSM. I am on the stock global ICS ROM at the moment, one I know could sync time on CDMA before. However, I cannot get the phone to switch off of GSM even in the hidden testing menu, even without SIM in... Likely has to do with the NV edits I made, and perhaps that may be your case too.
You *could* repurpose the sale as a GSM enabled unit... If it was even set up and working well as such. But due to the current technical issues of getting GSM mobile data above 2G I'd suggest to get it fixed and working back on stock CDMA for the consumer's sake if you can. Again AFAIK It should pick up a CDMA signal even without active service or the Verizon LTE SIM in, did so for over a year lol.
PhantasmRezound said:
That is not normal behavior and you may need to do some more work before you sell it.
Make sure all related network settings are correct for Verizon instead of GSM under Settings > Mobile Network menu.
Try entering on the stock dialer *#*#4636#*#* to access the hidden testing menu as well for the phone radio and verify it is on CDMA. If that code doesn't work on the dialer try it via an app like "Hidden Menus" or even "Battery Monitor Widget" by 3C (click "Tests" icon > Phone information from main page of app.)
Background: I broke off of my Verizon contract six months in and used my phone as a WiFi-only device (VoIP and internet texting apps) for the longest time. While I typically hid my signal icon and ran the phone in Airplane mode with WiFi toggled back on, I would occasionally turn my radio on to resync time and date to the cellular network. With no SIM in it clearly was syncing off Verizon CDMA signal still; I simply wasn't fully activated on the network any longer.
I just made the StraightTalk AT&T SIM card plunge the past couple of weeks and did an NV edit in CDMA WS as well, all alright on GSM. I am on the stock global ICS ROM at the moment, one I know could sync time on CDMA before. However, I cannot get the phone to switch off of GSM even in the hidden testing menu, even without SIM in... Likely has to do with the NV edits I made, and perhaps that may be your case too.
You *could* repurpose the sale as a GSM enabled unit... If it was even set up and working well as such. But due to the current technical issues of getting GSM mobile data above 2G I'd suggest to get it fixed and working back on stock CDMA for the consumer's sake if you can. Again AFAIK It should pick up a CDMA signal even without active service or the Verizon LTE SIM in, did so for over a year lol.
Click to expand...
Click to collapse
in the mobile network, I have it set to "CDMA / LTE" but I tried "CDMA only" and "Global" but none worked.
*#*#4636#*#* didn't work in stock dialer, it just disappeared when I finished typing it.
then I downloaded Hidden Menu, found *#*#4636#*#* in the list, tapped it, and it did nothing. I did some other ones and they did do something. I found htc diag mode, the same one I used to program it originally. I clicked read, and the phone number and min were blank. so I went to the prl and tried flashing a verizon prl file, then rebooted, and still nothing.
I'm going to try to RUU again and hope that solves it.
Update
I RUU'ed again, but still no luck..
Can anyone confirm whether or not, say you got a Rezound out of the box never activated, would you need a SIM card to get the signal initiated? I'm thinking either that's the case and my phone just needs a sim card to jump start it, or my rezound is toast.
I love this phone....there, I said it. But it's driving me crazy.
I bought it from a Chinese retailer, who shipped it with X821 firmware, but the box states that it's an X820. I doubt there is any difference in the hardware.
I would have left everything as it was, but I can't seem to make phone calls (don't have a data plan yet...yeah, I know....) with anything other than 2G, and that is about to go extinct. When I set it to WCDMA, it shows a UMTS connection, with no carrier designation, but the tower is the same one I connect to with 2G. The phone does sometimes show an AT&T 3G connection in the status bar, but I can't make calls, even though I have full signal. When I place the same SIM in my old HTC Inspire, the same monitoring app shows "UMTS - AT&T HSDPA+" and works just fine.
I'm at my wits end. I have rooted, installed TeamSpain recovery, replaced the firmware with the X829 and even tinkered with the frequency configurations through DFS Studio (which did a lot of complaining, and I'm still not sure if the changes stuck 100%). I also played with APN settings and tried the SIM in different slots, both alone, and with another SIM. And after all of that, still no progress in getting this phone to use a 3G or 4G connection to make calls. If I don't set it to "GSM only", no phone calls in or out. I'm essentially right under a tower, so signal shouldn't be an issue.
If anyone is using the same provider in the US, and is not having these kinds of issues, I'd really appreciate hearing what firmware you are using, and/or what you did to get things working.
I am using it on x820 with official stock 0.17s firmware, and did a dirty flash to cuoco92's 17s firmware. Everything works including HD voice calls, and full LTE.
xterminater07 said:
I am using it on x820 with official stock 0.17s firmware, and did a dirty flash to cuoco92's 17s firmware. Everything works including HD voice calls, and full LTE.
Click to expand...
Click to collapse
I tried this, as well as the Remix ROM. In fact, I think I've tried just about everything, without success. At one point, I had one of the apps indicating a 4G connection, but the phone diagnostics showed GSM (2G). Even the apps aren't all sure what to make of what's going on with the connections reported by this phone.
Currently on the cuoco92 v35 ROM. When WCDMA is enabled, I see simply a good UMTS connection , sans carrier name, in the "Network Cell Info Lite" app, and no ability to make calls. I also often (but not always) see the "AT&T 3G" sign. 4G or LTE never shows at all, even though the diagnostics show that the phone is communicating with an LTE transmitter, when preferred network is set to "unknown". It won't even let me set things like "LTE only".
Any chance you could set your phone to WCDMA and see what the "Network Cell Info Lite" app shows you? Anyone else with this phone on AT&T?
BTW, I am now using a data plan, which I thought might make a difference. It doesn't. EDGE data only for me . New SIM card is on the way, but my hopes aren't high.
Is it possible for a Chinese seller to have borked the phone so thoroughly with their x821 ROM (it's an x820 marked phone), that it keeps any subsequent radios from flashing properly? I don't know how/why it would work for some and not others.
Starting to really dislike this "phone"......it's more of tablet at this point.
Thanks.
I think APN is not set for AT&T
try this:
"Main steps
To use data services on our network with a non-AT&T device, you may need to program the data settings. The sections below provide the correct settings and steps for programming based on your device type and operating system.
.
Access the Settings menu.
Locate and select Wireless & Networks or More Networks.
Select Mobile Networks.
Select Access Point Names.
Locate and select the option to add a new APN. This is usually accessed by a + symbol on the screen or by tapping the menu button.
Program each field using the settings below.
Save the changes to return to the APNs menu and select the new APN.
Name ATT Phone
APN phone
Proxy Not set
Port Not set
Username Not set
Password Not set
Server Not set
MMSC
MMS proxy
MMS port
MCC 310
MNC 410
Authentication Type None
APN type default
APN protocol IPv4
Bearer Unspecified
Note: If you are unable to program your device following the steps above, refer to your user manual or contact the manufacturer for assistance."
Cadet_C said:
I think APN is not set for AT&T
Click to expand...
Click to collapse
Thanks, but I wish it were so simple. I have tried this, and other APN settings. None work to get this phone to be usable on anything other than 2G.
I just received and activated the replacement SIM. Still no improvement. While typing this, I have Network Cell Info Lite app running, and with the Set Preferred Network Type showing "Unknown" in the phone's diagnostic screen, It will switch randomly between "EDGE AT&T" (which works fine) and "UMTS -" (which is useless). Both have strong signals. For a split second before it switched to "UMTS-", the app showed "GPRS AT&T", but only for a split second before it kicks over to "UMTS-".
I wish someone using this "phone" on AT&T in the US, would run this app to compare notes. It may be that that the phone works fine on a full implementation of LTE (i.e. in locations where AT&T have already deprecated 2G) but not in other areas. Still, that doesn't seem to explain why this phone seems unable to register on the same 3G network, used easily by my other phone, with the very same APN settings and SIM.
You would have to call att and check if they turned our phone on to use lte. If your phone is not "registered" as an LTE capable phone it wouldn't be able to pick it up. This phone has all the bands needed for AT&T because I am using it now. All LTE work straight out the box, and i'm on the latest 19s cn rom
xterminater07 said:
You would have to call att and check if they turned our phone on to use lte. If your phone is not "registered" as an LTE capable phone it wouldn't be able to pick it up. This phone has all the bands needed for AT&T because I am using it now. All LTE work straight out the box, and i'm on the latest 19s cn rom
Click to expand...
Click to collapse
I'm a bit confused. Is this what you did to achieve proper function of this device? I.e. calling AT&T and getting them to do this for you? My conversation with their tech person didn't seem to bear fruit in this regard.
Also, which slot do you have the SIM card in? I've used the stock 17s and now on cuoco92 v35 ROM. There definitely seems to be a difference in how the network settings behave, based on the location of the SIM. At one point, after selecting BAND 6 (when it would let me), the phone showed a constant "AT&T 3G" connection, but it was useless. No calls and no data.
I have no 4G/LTE at all. Verizon SIM through StraightTalk. I went into APN settings, but everything is greyed out and can’t be edited, or added. When I go into my network settings and set my Preferred Network Type to “LTE only,” I lose all bars and signal. Is this just a Verizon thing or would it work with ATT SIM? Before I got the phone, I did extensive research to make sure it’d fully work on Verizon/StraightTalk, so I’m clueless right now.
A guy named Frank, with StraightTalk live chat, told me that my device isn’t 4G compatible....like, at all. Wth...? They didn’t seem like they knew what I was talking about, though.
When I type: *#*#4636#*#* and go to phone information, I have “LTE Only” and other LTE options show up, but if I switch to “LTE Only,” I lose all signal there as well.
The same SIM worked perfectly on my iPhone before I got this phone
43t34 said:
I have no 4G/LTE at all. Verizon SIM through StraightTalk. I went into APN settings, but everything is greyed out and can’t be edited, or added. When I go into my network settings and set my Preferred Network Type to “LTE only,” I lose all bars and signal. Is this just a Verizon thing or would it work with ATT SIM? Before I got the phone, I did extensive research to make sure it’d fully work on Verizon/StraightTalk, so I’m clueless right now.
A guy named Frank, with StraightTalk live chat, told me that my device isn’t 4G compatible....like, at all. Wth...? They didn’t seem like they knew what I was talking about, though.
When I type: *#*#4636#*#* and go to phone information, I have “LTE Only” and other LTE options show up, but if I switch to “LTE Only,” I lose all signal there as well.
The same SIM worked perfectly on my iPhone before I got this phone
Click to expand...
Click to collapse
This problem appeard on other devices as well. You should report this to Verizon support, ive seen 3 threads having the same issue with Verizon...
43t34 said:
I have no 4G/LTE at all. Verizon SIM through StraightTalk. I went into APN settings, but everything is greyed out and can’t be edited, or added. When I go into my network settings and set my Preferred Network Type to “LTE only,” I lose all bars and signal. Is this just a Verizon thing or would it work with ATT SIM? Before I got the phone, I did extensive research to make sure it’d fully work on Verizon/StraightTalk, so I’m clueless right now.
A guy named Frank, with StraightTalk live chat, told me that my device isn’t 4G compatible....like, at all. Wth...? They didn’t seem like they knew what I was talking about, though.
When I type: *#*#4636#*#* and go to phone information, I have “LTE Only” and other LTE options show up, but if I switch to “LTE Only,” I lose all signal there as well.
The same SIM worked perfectly on my iPhone before I got this phone
Click to expand...
Click to collapse
Guessing you're rooted? If so you can try and use a root file manager (amaze is a good one) and delete your apn.config.xml in system/etc and replace it with a different one and set permissions and reboot and then see if you can manually add your Verizon apns. For me this did the trick on a few roms and allowed me to add my carrier apns where as before it would not allow me to due to them being greyed out.. I have a few if you'd like to try them let me know and I'll post them here. I had no data on a few gsi roms on a few devices that I own and apns were greyed out as you say yours is. I don't have Verizon I currently use Boost but it's worth a shot and this will not break anything. Trust me I've had my fair share at messing with apns.
Here's one to try:
https://drive.google.com/file/d/1-2EGZByagz_EI12PBL5jvHWE-kV_ZmnA/view?usp=drivesdk
You can copy your current apn.config.xml in system/etc and transfer it to your sdcard first...