5G Phone Stuck on 2G - General Questions and Answers

Hello!! I'm new here! I hope I'm posting this in the right place. I have a TCL 30 XE 5G (T767W) from Metro by T-Mobile and I had it sim unlocked by an eBay seller who had me hook it up to my PC via USB. The settings menu says it's still locked but it does accept sims from other carriers so I think it's unlocked. The problem is that it won't find any service at all with any sim other than the original Metro sim unless I set it to 2G only mode. Even selecting my service provider from the available network list doesn't work. The only way I can get the phone to find service is to force it to connect to 2G then change the network mode to LTE and then finally set it to 5G and that doesn't always work either and even when it does it's only a matter of time before it randomly disconnects and is left forever searching for service but never reconnecting until I set it back to 2G only mode again. All this is happening in a city with great T-Mobile coverage and all of the sims I've tried run on the T-Mobile network. The only sim that works without any fuss is the Metro sim even after the phone was unlocked. I'm using the phone on a T-Mobile MVNO now but it always disconnects sooner or later. I don't understand how a new phone can't automatically find an LTE or 5G network without first connecting to 2G and it doesn't find that either unless it's set to 2G only mode. Aside from the obvious inconvenience this causes, T-Mobile plans to shut down their 2G network soon at which point this phone won't be able to find service. Has anyone else run into this problem? I have two of these phones both are doing the same thing. Did something go wrong with the unlock? Is it a software issue? I tried asking my carrier for help but they can't figure it out either. I appreciate any help or info anyone here can offer. Sorry for the long post.

i suggest taking into a service and getting it there unlocked. perhaps your method prove faulty.

Fytdyh said:
i suggest taking into a service and getting it there unlocked. perhaps your method prove faulty.
Click to expand...
Click to collapse
Could rooting the phone fix it?

Help!!!

Related

AT&T Nexus S work on a foreign simcard without unlock?

Did you have to unlock the phone to do that?
I called AT&T and they said that they don't have the unlock code since they don't even sell the device, but that it works on sims outside the US. She seemed to imply that it won't work on tmobile but that if I go outside the US, and just put a sim in, it will work without me having to unlock the phone in anyway.
Can anyone verify this?
Thanks
dannypp said:
Did you have to unlock the phone to do that?
I called AT&T and they said that they don't have the unlock code since they don't even sell the device, but that it works on sims outside the US. She seemed to imply that it won't work on tmobile but that if I go outside the US, and just put a sim in, it will work without me having to unlock the phone in anyway.
Can anyone verify this?
Thanks
Click to expand...
Click to collapse
Most customer service representatives are pure idiots .... Nexus S is a Google phone , so it's factory unlocked to any SIM card you use with it(you may or may not get 3G on other networks depending on the other network 3G frequencies , and if the forgein network has 3G on 900/1900MHz it will have 3G on this Nexus S)..
Hope this helps..
Well I went to tmobile and the guy put in a sim into the phone and the phone got no reception nor did it seem to recognize the sim at all.
So it seems that it isn't unlocked.
I tried putting in this code: *#7465625#
Its supposed to tell you if the phone is unlocked or not, but nothing happens, it just says: Connection problem or invalid MMI code.
I don't need it to work on tmobile, but I do need it to work on foreign simcards. And I saw on other forums that for some people it worked on tmobile and others it didn't so there doesn't seem to be any clear answers.
dannypp said:
Well I went to tmobile and the guy put in a sim into the phone and the phone got no reception nor did it seem to recognize the sim at all.
So it seems that it isn't unlocked.
I tried putting in this code: *#7465625#
Its supposed to tell you if the phone is unlocked or not, but nothing happens, it just says: Connection problem or invalid MMI code.
I don't need it to work on tmobile, but I do need it to work on foreign simcards. And I saw on other forums that for some people it worked on tmobile and others it didn't so there doesn't seem to be any clear answers.
Click to expand...
Click to collapse
you have another issue here , check your phone
Thanks for the response.
What do you mean by other issue and how should I be checking my phone?
In any case, I put in a simcard that my brother gave me which I believe is from Mozambique on a carrier Vodacom. It asked for the code of the sim when I put the phone is as always, and so I got in putting in 0000.
It then showed no connection to anything whatsoever, also as always.
Keep in mind I did have wifi on.
Then all of a sudden it asked me to update my phone and install something. So I just said yes and it updated and rebooted.
All of a sudden I have bars here and there and it recognizes that tmobile and AT&T are in the area. I also saw I think at the top of the notification bar when I pull down the notifications tab, it said Vodacom. Of course I get no reception whatsoever but that is expected, this sim was a gophone sim in Mozambique.
Does this mean that its unlocked if it is recognizing another sim, even though no confirmation of reception? I plan to try again with tmobile now and perhaps make sure I have wifi connection while doing so and leave it in for longer.
Thanks and please let me know if you have any thoughts.
what ROM you're on now?stock or costum one ? you also might consider a FULL phone wipe.because this might be caused by a difference between at&t apn or other Sim data and the other .check for that
I'm on stock 2.3 that the phone came with. Haven't messed with it at all.
So I assume you saying that if I want to switch to another sim, I should do full phone wipe then? so that the at&t apn doesn't confuse it?
IF it doesn't work with tmobile again, I will try taht, and I will also try to learn what an apn is.
Thanks for the help.
Might work or might not !!! backup all your data and apps first then use the shotgun method lol
But what I am sure of is that Nexus S phones are always unlocked and SIM free..

[Q] HTC Merge SIM help

Hello, I bought a SIM card from straight talk hoping to use it on my merge because I have seen people online that says I can do that as long as i have my SIM card unlocked. But after I got the card activated and put it in my phone it don't work. I try changing to GSM and using their APN but I have no signal, the mobile network just stays unchecked and I cannot check it. After a few minutes my phone suggests switching over to global mode and i do have mobile signal then but still no connection with anything. I called the straight talk woman and she told me it only works with AT&T or T-Mobile phones but it just don't make any sense to me that you have to have one of those previous carious just to get them as a new carrier? Am I missing something here?
Fixed
deathknight842 said:
Hello, I bought a SIM card from straight talk hoping to use it on my merge because I have seen people online that says I can do that as long as i have my SIM card unlocked. But after I got the card activated and put it in my phone it don't work. I try changing to GSM and using their APN but I have no signal, the mobile network just stays unchecked and I cannot check it. After a few minutes my phone suggests switching over to global mode and i do have mobile signal then but still no connection with anything. I called the straight talk woman and she told me it only works with AT&T or T-Mobile phones but it just don't make any sense to me that you have to have one of those previous carious just to get them as a new carrier? Am I missing something here?
Click to expand...
Click to collapse
Thanks to the helpful people over at 2fastroms and their quick response I found out that you have to have the 1.06.00.0910 verizon radio flashed to your system. You have to install the radio in the boot-loader and not the recovery menu, it took me a minute to figure that one out. Just informing anyone that has the same problem as me because I could not find it anywhere else on the web. Anyway credit to jianC for the help.

Signal/Network problem

Hi guys,
I've been having this problem with my N5.
Its a d820 model, unlocked and rooted.
I have no signal, cant register to the network either.
I can use wifi with no problem too.
I changed the micro sim card with other carriers, same issue. I asked for a new micro sim to my carrier too (not cut), but still getting the same problem.
It's worth mentioning that the micro sim works flawlessly. Im using it everyday on an HTC One S and signal and data works perfectly.
When I first get the simcard on the N5, it asks for a reboot, after it comes back up, it shows strong signal, but I can't make any call or receive, no messages either.
After a few minutes, the signal goes down and it shows only emergency calls.
Going into mobile networks and searching for my carrier takes quite some time, but no matter how many times I try to select my carrier,it always comes back with not able to register in the network.
I did a factory reset, and went back to stock, and then performed the system updates to 4.4.4.
I flashed a couple of radios as well, but no luck.
The IMEI shows well, and its the same that shows on the box, so I guess no problems there with a corrupt IMEI.
Has anyone else had any problem like this? Any suggestions?
I've been reading some threads here, and I still have to try a different kernel/ROM, but if anyone else knows of a similar situation, I would appreciate any suggestions.
May be it has something to do wid preferred network...
If u use 3g go to dialpad
Type
*#*#4636#*#* phone info
Select modem as wcdma only...
If u use lte select lte only... See if this works
I think I already tried that, but cant remember for sure
Will give it a shot, thanks
Is the phone second hand?
Have you checked if the IMEI is blocked by the network?
sounds like you bought a used phone that has been blacklisted. if blacklisted, your phone wont work on any US carrier, and many Canadian carriers.
Yes its a second hand phone, and I don't know if it is blacklisted on USA, but Im in South America, so that shouldnt be a problem
And there are no carriers here working with N5 so they cant blacklist the IMEI either
(This doesnt mean that the phone doesnt work here, actually, my wife has another N5 that works like a charm here)
masok said:
Yes its a second hand phone, and I don't know if it is blacklisted on USA, but Im in South America, so that shouldnt be a problem
And there are no carriers here working with N5 so they cant blacklist the IMEI either
(This doesnt mean that the phone doesnt work here, actually, my wife has another N5 that works like a charm here)
Click to expand...
Click to collapse
the carriers dont have to work with the n5 to blacklist it. in other words, they can blacklist any phone that connects to their network. as soon as you connect to the network, they know your imei and other info about your phone. anyways, they blacklist your imei, so when your phone tries to connect, it cant. the agreement that carriers have in the US and Canada, could possibly be for all of the americas, or, in south america, they could have their own blacklist.
---------- Post added at 12:25 PM ---------- Previous post was at 12:23 PM ----------
googling, i found that carriers worldwide are sharing blacklists.
The GSMA, an international association of wireless carriers, also keeps a database that wireless carriers worldwide could check to prevent stolen phones from being reactivated on their networks.
Click to expand...
Click to collapse
I will check on that, I think I can just call my carrier and ask if that IMEI is blacklisted or not
masok said:
I will check on that, I think I can just call my carrier and ask if that IMEI is blacklisted or not
Click to expand...
Click to collapse
yup, thats the best thing to do. the people that first answer the phone, customer service, probably wont be able to help, maybe someone in tech. or, use this website to check(there art other sites as well).. http://swappa.com/esn
Well I just checked. IMEI not blacklisted on my carrier, also checked with swappa, not blacklisted either.
I used the *#*#4636#*#* to select wcdma as well as other options there, but still no go.
Also, under Mobile network settings, changed the preferred network type to LTE, 3G and 2G, but no luck
Tried Choose automatically the network, but still getting the message that its unable to register to the network right now and that I should try again later
I guess Im left with flashing some other ROM/kernel to see if it helps, unless someone has any other suggestions
masok said:
Well I just checked. IMEI not blacklisted on my carrier, also checked with swappa, not blacklisted either.
I used the *#*#4636#*#* to select wcdma as well as other options there, but still no go.
Also, under Mobile network settings, changed the preferred network type to LTE, 3G and 2G, but no luck
Tried Choose automatically the network, but still getting the message that its unable to register to the network right now and that I should try again later
I guess Im left with flashing some other ROM/kernel to see if it helps, unless someone has any other suggestions
Click to expand...
Click to collapse
call your provider first, problem can be on their end.
---------- Post added at 07:02 PM ---------- Previous post was at 06:58 PM ----------
also, what kind of nexus 5 is it, a d820 or d821? it would make a difference signal-wise. ones for north america, ones for europe. honestly, i have no idea which you would need http://www.phonearena.com/news/Differences-between-the-two-Nexus-5-models-D820-and-D821_id48985
I don't know if the problem is with the carrier, since I'm using the very same simcard with another phone and I have data and network with no problem.
The phone is d820, but I know it works here (my wife has the same one), network 2g and 3g work well here, LTE is the only thing that won't work here with this phone but I don't care about that
I'll keep looking just in case, and I guess tomorrow I'll flash different ROM
Sent from my Nexus 5 using XDA Free mobile app
masok said:
I don't know if the problem is with the carrier, since I'm using the very same simcard with another phone and I have data and network with no problem.
The phone is d820, but I know it works here (my wife has the same one), network 2g and 3g work well here, LTE is the only thing that won't work here with this phone but I don't care about that
I'll keep looking just in case, and I guess tomorrow I'll flash different ROM
Sent from my Nexus 5 using XDA Free mobile app
Click to expand...
Click to collapse
If the problem is wid radio flashing a different rom won't matter ..
Have u tried flashing a factory image ?
I know flashing a new ROM wont help with radio, but I've seen that using *#*#4636#*#*, going into phone information and then Select Radio Band, gives me an error and force closes.
I've seen some threads about that, and someone saying that it was working on a CM ROM, so I was thinking of trying that in order to be able to select the radio band and see if that helps.
About the factory image, yes, I used the google images to go back to stock, and then performed the system updates.
Well I flashed Slim Rom, and was able to get into *#*#4636#*#* to change radio band. Tried them all, no change.
Played around with the preferred networks and no luck either.
I'm officially out of ideas, but I'll keep digging around to see what I can find.
Any suggestions welcome.
Also, I know that there is a known issue with the GPS signal on some Nexus 5, and there are a few videos on Youtube showing how to fix it (basically opening the back of the phone, and sticking a piece of paper under the connector).
Does anyone know if there is something similar happening with the radio? Does anyone have a photo of the phone showing which part would be the antenna?
One additional thing I noticed.
If I switch, or just take out and reinsert the micro sim, the phone asks for a reboot. After doing that, when the phone boots up, I see I have network (full bars), going into mobile operators, I can see my carrier, and I can register too. But I cant make or receive any calls or messages.
During this 10 minutes that I have this sort of fake signal, if I go into *#*#4636#*#* and phone info, I can see my carrier, but it doesn't show my phone number. Weird.
Lg nexus 5 network issue
i am facing the same issue with exus 5 .In my hometown in India,the phone simply shows "Emergency calls only" and shifts to normal working mode with full network coverage once i travel to other parts of my state (parts which probably has a better signal strength ,i dont know ).i have tried out changing the sim card and a factory data reset ..Both didnt help ..
masok said:
Hi guys,
I've been having this problem with my N5.
Its a d820 model, unlocked and rooted.
I have no signal, cant register to the network either.
I can use wifi with no problem too.
I changed the micro sim card with other carriers, same issue. I asked for a new micro sim to my carrier too (not cut), but still getting the same problem.
It's worth mentioning that the micro sim works flawlessly. Im using it everyday on an HTC One S and signal and data works perfectly.
When I first get the simcard on the N5, it asks for a reboot, after it comes back up, it shows strong signal, but I can't make any call or receive, no messages either.
After a few minutes, the signal goes down and it shows only emergency calls.
Going into mobile networks and searching for my carrier takes quite some time, but no matter how many times I try to select my carrier,it always comes back with not able to register in the network.
I did a factory reset, and went back to stock, and then performed the system updates to 4.4.4.
I flashed a couple of radios as well, but no luck.
The IMEI shows well, and its the same that shows on the box, so I guess no problems there with a corrupt IMEI.
Has anyone else had any problem like this? Any suggestions?
I've been reading some threads here, and I still have to try a different kernel/ROM, but if anyone else knows of a similar situation, I would appreciate any suggestions.
Click to expand...
Click to collapse
praveenkrishnan said:
i am facing the same issue with exus 5 .In my hometown in India,the phone simply shows "Emergency calls only" and shifts to normal working mode with full network coverage once i travel to other parts of my state (parts which probably has a better signal strength ,i dont know ).i have tried out changing the sim card and a factory data reset ..Both didnt help ..
Click to expand...
Click to collapse
Has anyone been able to track down the issue and get it resolved? I'm facing the same situation, and almost taking it to an authorized LG support so that they can change the motherboard.

[Q] 3G not working

My new Honor 6 H60-L02 doesn't seem to have a data connection. The telephoning/messaging works well, but when I am out of wifi range, and want to use the internet, the message I get is 'no network connection'.
Any help appreciated.
Sorted!!
It was my sim card settings, OK now.
Which settings you mean? I've got the same problem on h06-l04 and did everything like deleting the APN, tested APNs from other providers etc. - nothing helped. The SIM shows h+ and h all the time, but when I try to open a site or try to update my apps over google play the connection works a few seconds up to a minute and then the connection got lost again. It never happened on my galaxy s2.
I used the APN settings on my sim card providers web site and they worked perfectly. If I am not in a wifi zone the phone switches to h+ and performs very well.
3g not working
So my new huawei honor 6 is not supporting 3g. It only shows edge connection. How to sort this out? Please help.
Logno said:
So my new huawei honor 6 is not supporting 3g. It only shows edge connection. How to sort this out? Please help.
Click to expand...
Click to collapse
What model do u have? H01, H11 - won't support Euro 3G, thay are only for China. H02 and H12 - should work fine with 3g. H04 - Should work fine with 3g and 4g in your country.
Also please check if your carier provides 3g service.
jamsh said:
My new Honor 6 H60-L02 doesn't seem to have a data connection. The telephoning/messaging works well, but when I am out of wifi range, and want to use the internet, the message I get is 'no network connection'.
Any help appreciated.
Click to expand...
Click to collapse
What country you live?
Mine just had 2g network on TMobile network USA
hi guys if want to solve this problem i know this is very late replay like a year xD but this can be fixed by turning airplane mode on then off
I received huawei from Uk. Honor 7, Network unlocked but i cant access 3g to 4g service data. It only works when i turn to 2g, edge and very slow. Any help?
3G/4G issue
I'm also having the same issue with my Honor 6+ which i bought last month from dubai. I'm trying to use data connection using 3G/4G in india as i'm residing in India, but even after following all the required settings that are provided by my service provider and the other trouble shooting steps i'm still no where. It always displays the 3G/4G icon at the top but never works. I doubt if it is something to do with the software/firmware version. Please suggest.
I'm also having the same issue with my Honor 6+ which i bought last month from Malaysia and using in Bangladesh. I tried airplane mode on and off, it shows 3G for few moment or minutes but then again it becomes edge mode. Please help me out from this problem.. thanks in advance..
I live in India and I bought my Honor six plus online from a local retailer, and my phone can only access 2G data (or EDGE, apparently ) which is too slow to support anything. At first, I thought it was a sim card issue but I tried using the same sim in someone else's phone and that person's phone had no such problem. Even my brother's Iphone faced nothing of the sort. Any one know how to fix this?
Check on the back of the phone for phone number. On my honor 6, on the back on the lower part are 2 lines with text. on the second line I have found my phone model: H60-L2, in my case. Then you can check with, for example, http://willmyphonework.net/ if your phone model will work in your country. I know for example that my phone model will not allow 4G in all European countries.
If you prove that your phone is working in your country than its a matter of settings. You can try:
- Place the sim card with a data plan on the main sim tray. Honor 6 not rooted and running stable ROM will allow data only on the first tray. In Settings -> Dual Card Sim Management you can see which card is in which tray. If necessary switch the sim cards into the other tray.
- Check your settings and here the most important one is the APN. Make sure that the settings of your operator are correctly set in order to have mobile connection.
Generally the 3G network should at least be recognized, so if your phone is not registering with a 3G network then either it is not hardware compatible or you have placed your SIM in the wrong tray. Most probably is the first option and what you can do is to change the phone...
Man...i was having the same problem...well just 2 mins back!??
I have marshmallow update...and wat my problem was that the apn was set, though correctly, but in upper amd lower case....
And it seems apns are case sensitive...so check it!
Honor 6x is my latest mobile, which i bought a week before, it's seems like the mobile having data connection problems. till i'm using 4G sims but i'm not getting at least 2g speed, most of the time i'm not getting internet connections. at the same time it's showing H and H+ symbols ...
if possible, someone pls help me here.

Sprint HTC U11 unlocked but not working properly with T-Mobile

So I recently bought a Sprint HTC U11 off ebay, and at first it didn't work at all with my T-Mobile SIM, all it showed was a full strength signal with a capital R next to the signal bar. I called Sprint and they confirmed it's unlocked, although they said it may still be tied in some way to the original owners account, which could potentially cause problems.
I managed to get it working on LTE, by going into testing mode (*#*#4636#*#*) and setting the network to CDMA/LTE only, but with this setting I can only use Data, no Calls or Text. It is also has Sprint as the provider instead of T-Mobile, and I can't switch on VoLTE (greyed out in the Testing menu).
I tested it with some of the other settings, but anything that turns on GSM makes it glitch out, connect for only a few seconds to either T-Mobile or U.S Cellular (a provider I automatically roam on where I live), and then disconnect and refuse to reconnect to anything until I switch back to CDMA/LTE and reboot.
Is this a common problem with the Sprint version of this phone? Are there any fixes for it? The phone is currently not rooted or modified in any way, and is running Android 8.0, Software version 2.33.651.10.
Thanks for any help.
Packaroo said:
So I recently bought a Sprint HTC U11 off ebay, and at first it didn't work at all with my T-Mobile SIM, all it showed was a full strength signal with a capital R next to the signal bar. I called Sprint and they confirmed it's unlocked, although they said it may still be tied in some way to the original owners account, which could potentially cause problems.
I managed to get it working on LTE, by going into testing mode (*#*#4636#*#*) and setting the network to CDMA/LTE only, but with this setting I can only use Data, no Calls or Text. It is also has Sprint as the provider instead of T-Mobile, and I can't switch on VoLTE (greyed out in the Testing menu).
I tested it with some of the other settings, but anything that turns on GSM makes it glitch out, connect for only a few seconds to either T-Mobile or U.S Cellular (a provider I automatically roam on where I live), and then disconnect and refuse to reconnect to anything until I switch back to CDMA/LTE and reboot.
Is this a common problem with the Sprint version of this phone? Are there any fixes for it? The phone is currently not rooted or modified in any way, and is running Android 8.0, Software version 2.33.651.10.
Thanks for any help.
Click to expand...
Click to collapse
Do the following on the thread and everything will work.
https://forum.xda-developers.com/u11/how-to/convert-sprint-branded-u11-to-unlocked-t3664154

Categories

Resources