Can't connect to 3G or LTE - Nexus 5 Q&A, Help & Troubleshooting

Hey guys , I just bought a nexus 5 and a new T-Mobile sim card .I can only connect to edge and no matter what I do I cannot connect to 3G or LTE I have done everything I can think of and I even called T-Mobile and they gave me APN settings but the problem still persists .. I tried updating to marshmallow 6.0.1 and the problem still persists even though the signal has become fairly stronger . I appreciate any help

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Unable to get 3G on my Touch Cruise

I've recently got a new 3G iphone. It came with a new SIM card that is suppose to be optimized for iphone. When I put this sim card into my Touch Cruise, I am unable to get 3G. There is signal bars but I cannot make or receive phone calls. The only way to make or receive phone calls is by disabling the 3G. The same applies for Data. I thought maybe the radio ROM was not working so I changed it to the Murata ROM but I am still having problems. I am on the Rogers network in Canada. Has anybody else having similar problems? Any help would be appreciated as I still find my Touch Cruise more useful than the 3G iphone.
Most probably is ur phone broken. U will have to send it to the service. Maaaaany users had/have/will have problems with calls, connections, signal strenght,bluetooth, camera, broken wheel etc. I had... Touch cruise is crapy.
If you know someone with a non-iPhone 3G sim, try theirs in your Cruise and see what happens
benjimen said:
If you know someone with a non-iPhone 3G sim, try theirs in your Cruise and see what happens
Click to expand...
Click to collapse
Actually, I did this today. Same thing happen. I would get a 3G signal but when I tried to make a call, I get no signal. But when I disable the 3G, edge works fine with voice and data.
Hi, I sufered the same problem until yesterday. I had the same problems. Yesterday I switched off the HSDPA switch in the software, after a soft reset the TC came back online. Probably worth trying?
Gr. WAS
As good as it gets here is a link to an solution
http://forum.xda-developers.com/showthread.php?t=389601
Succes, WAS
WAS said:
As good as it gets here is a link to an solution
http://forum.xda-developers.com/showthread.php?t=389601
Succes, WAS
Click to expand...
Click to collapse
I've tried both Murata radio roms. Both gives very good 3G signal but when I try to make a call or use data, I get no connection. I've tried the original radio ROM and some of the Kaiser ported radio Roms. They all give me no connection with 3G. In every case, when I disable the 3G, I can make calls and get data although it is only through edge and GPRS. I looked at my box for the TC and it is revision A. Do I need to send my TC for repair? I even went as far as calling my cell phone provider(Rogers) and they couldn't help me. The phone is functional but without 3G I am not getting very fast data speeds.
The problem started with my TC started after upgrading to Udk R6 and R7, after upgrading to R8 and a new radio version
http://forum.xda-developers.com/showthread.php?t=351964
Will give you an updated radio version what will have a good match with the Udk diamond R8 Rom.
Succes, WAS
just a question, I'm on ATT, and the sim card I use on my polaris came off the iPhone3G, and I get the H (the high speed thing) sign on the phone during data sessions. on some areas I'm only able to get E and sometimes even the G sign came on and off. so I guess, maybe wherever you are, the 3G signal isn't strong enough, so you can only get edge.
and as of the other person noted, polaris is kind of at the edge of getting broken, fast. I only uses mine exclusively for web browsing for a week when the phone goes crazy. sent it to repair and everything seems to be in "sane" mode now let's hope that my phone didn't try to go insane again
rycckor said:
I've recently got a new 3G iphone. It came with a new SIM card that is suppose to be optimized for iphone. When I put this sim card into my Touch Cruise, I am unable to get 3G. There is signal bars but I cannot make or receive phone calls. The only way to make or receive phone calls is by disabling the 3G. The same applies for Data. I thought maybe the radio ROM was not working so I changed it to the Murata ROM but I am still having problems. I am on the Rogers network in Canada. Has anybody else having similar problems? Any help would be appreciated as I still find my Touch Cruise more useful than the 3G iphone.
Click to expand...
Click to collapse
I am having the same problem, 2 weks ago I traveled to other country without 3g network (only edge) and i had used a diferents simcards. When I come back to my country, I lost the 3g only works in GSM , I try another sims card and same problem and the orignal simcard in differnts mobiles 3gs worsk fine. Do you find any solutions? You are the only person who i find with the same problem.
Thanks
Edit/Delete Message
Guys, maybe a silly comment but did you check the following settings : phone/menu/options/band and check select network type to auto?
I have had problems before with 3G & HSDPA. Somtimes when your registered on HSDPA and you travell away from that mast/area into an area that only has 3G or even only Edge, then device does not re-register onto the other band and you will not be bale to make calls and will miss calls. This happened for days one time and i very nearly hard reset my device in frustration, i eventually found out it was a network problem.
Another work around is going to phone/menu/networks and manually select networks and hopefully it should bring up your 3G network.
Phone operators do not like telling you that their 3G or HSPDA networks do not have good coverage or intermittent quality of signal. My 3G network only has 70% coverage & 30 % of that is HSDPA, so i sometimes end up on EDGE and hence miss calls.
Try playing around with the setting above one at a time. When im stuck i manually set band to GSM (edge), then when travelling away reset back to auto. Most of the time however it is fine.
Hi, I'm from Argentina. I had the same problem with 3G after a trip to other country. Now my TC only works well in GSM Band. Unfortunatelly we don't have service support here so if anyone knows how to fix this will be highly appreciated.
I have the same problem in my Polaris. I tried almost every radio i could find, i tried with different sim cards, i tried with official wm6 and wm6.1 roms with no result. When 3G is enabled i can not make or receive calls. I think that the problem started when i first upgraded from WM6 to WM6.1. Now i keep band selection to GSM so at least i can use my polaris as a phone. There must be something that prevents gsm connection when 3G is active. I hope a registry tweak could be found for this. I' m just one step from sending my device to be serviced.
I have the same trouble with my virgin uk sim card and t-mobile which share the same network(need to turn off 3g),but no trouble with my asda sim which uses the vodaphone network.So if you try different sim cards make sure they dont share networks.Another thing i've noticed with my virgin sim is all my preferred networks are unchecked but my phone will still connect if my 3g is turned off?

Rom data integreation

hey guys i recently flashed a new rom thats meant for another phone but is backward compatible with my phone, but the data connection stays on edge and on the previous rom on the same location i get H or even H+ at 8mpbs speeds which is average for Blu life play on my network. Now i tried changing the modem and even asked others for help but no help arose, what do you guys suggest?
ok so it works on sim 1 but not sim 2 slot

Galaxy S7 LTE problem's

Hello from Bulgaria.Some one have had a problem with 4g network.Samsung S7 when he was lte \ 3g \ 2g after 30-40 minutes , scope disappears and receives a missed call notification.The problem gone after restart the device and after 30-40 minutes is same situation.If a phone is an 3g\2g no problems.
Sorry for my bad english.
Same here
My cousin bought an S7 Edge, but it had the same problems as listed. She then proceeded to change the phone, yet the other S7 Edge had the same problem. What could be the solution to this problem, and what caused it?
I change 3 phone 2 black and now give to me gold,for now i don't have a problem with the gold piece. Everything work fine.
Gachev said:
I change 3 phone 2 black and now give to me gold,for now i don't have a problem with the gold piece. Everything work fine.
Click to expand...
Click to collapse
We changed two gold ones, awaiting for the third. Problem seems to be persistent.
Hi!
Go to settings and find your APN-settings. Remove IPv6 and save it. Then everything should work fine.
I'm having the same problem. I'm sitting beside my friend with his ip6s+ and he's not having trouble connecting with the lte. just saying that this might not be just a network problem.
I've read about multiple people, including me having this issue, for some the APN IPv4 switch seems to work, but not for everyone. So what is this? Is it related to the phone hardware or software? Or is it a network problem? And will it be fixed? As this is starting to irritate me a bit..
Many People in my country (indonesia) is having similar problem. The signal somehow stuck in 3g. Forcing it to use LTE only using the app "4G LTE Switch) makes the signal gone, emergency only mode. Only a reboot would bring 4g back.
However it only acts up when using one specific mobile provider (telkomsel). Switching to my second sim, also by the same provider, didnt help. But if I switched to another provider, the problem doesnt happen.
Widespread issue in Germany as well. It's carrier independent. Had to exchange one unit. The new S7 Edge I got works fine so far, but has a pink hue on the display. Samsung QA! -.-
Any solutions or updates?
Solved?!
Hi,
I had the same problem in bulgaria with telenor.
Yesterday i got an update on my s7 edge to XXU1APCH and it seems to solve it.
This night it stayed connected. Normally i had the no service available in the morning.
Anybody else see the same?
heinda said:
Hi,
I had the same problem in bulgaria with telenor.
Yesterday i got an update on my s7 edge to XXU1APCH and it seems to solve it.
This night it stayed connected. Normally i had the no service available in the morning.
Anybody else see the same?
Click to expand...
Click to collapse
Havent got any updates here in my country.
Would u be so kind to upload the firmware using this method
here
and
here
heinda said:
Hi,
I had the same problem in bulgaria with telenor.
Yesterday i got an update on my s7 edge to XXU1APCH and it seems to solve it.
This night it stayed connected. Normally i had the no service available in the morning.
Anybody else see the same?
Click to expand...
Click to collapse
Downloaded bulgarian firmware,, XXU1APC8 is the only one available. Tried to check for update, nothing yet to xxu1apch...
Update:
Emailed Indonesian Samsung Support, they came up with a temporary solution:
go to phone, dial *#9900#
select debug level disable/low
change to mid
wait for phone to reboot.
2 hours past no signal lost yet
update: 3rd hour signal gone again
hi,
has anyone found a solution for the problem above?
in my case I have really slow internet (mobile data) on 2,3 or 4G, it's like it freezes when I try to open a page
when I connect to 4G it maybe works for a second and then nothing else, it's like 2G, very slow (wifi works normal)
can it be hardware problem? I already cleared cache and reset the phone, but it's still the same..
At me the phone can not change back to 2G from LTE, if 3G network is unavailable.
If I use LTE/3G/2G option and somewhere is not 3G network I can't receive or make voice calls.
Phone only works with 3G/2G option in network mode.
But in this case I only can use edge if somewhere only 2G and 4G networks are available.
If I use LTE network, the phone doesn't receive incoming calls.
I bought my samsung s7 gold one month ago in Lebanon (Middle East). I faced exactly the same problem, I couldn't receive any phone calls. Went to the store and they told me to switch from LTE/4G to 3G. Now my phone is always on 3G and working ok so far. But I can't put it on 4G !!!
get new simcard will fixed problem
Hi, is there a solution to this?
got info that there is a patching from samsung for this issue but since i am using custom rom, i cannot confirm this.
anyone has any update?
Same problem! I'm from Mexico and i just bought my pink s7 Edge on sunday, i've been going everyday to the carrier store and yesterday they finally gave me another one but im having the same issue! I can't take it anymore i don't know what should I do Maybe all the pink ones have the same problem? They have already changed my SIM Card, i have tried with another one and it still happens
This sounds very similar to the LTE problem on the Nexus 6P I wonder if it is actually the same problem.

Nexus 5 LTE weak signal reception.

Dear experts.
i have finally decided to share my ''unlucky epxerience'' with you.
i have got a serious problem which i have been fighting with since the first day i purchased my phone.
i have a white nexus 5 32 Gb version,D821 model.
and i'm from morocco,which means 4G will work for me because my phone is the indian version not the american version that doesn't support 4G in the rest of the world.
so,my problem is like that: when i first bought this phone i got stuck in ''emergency calls only'' for one week like every nexus 5 users did due to this known problem about the phone.
and after many reboots,clearing cashe,and searching manually for network,i got the signal again.
i never tried to switch to LTE mode,becuz i thought it would charge me a lot of data.
but,after a while i decided on and switched to LTE and got stuck again in emergency calls only !!!
i tried many things like contacting my carrier,searching manually,inserting another Sim card,force switching to LTe by dialing *#*#4636#*#*
but to no avail.
i decided to go to the nearest 4G tower and make sure if the problem had to do with 4G coverage or my phone's antenna.
then,i finally saw the LTE logo with full bar.
to sum up,now,i can't use 4G unless i'm near a 4G tower.
moreover,sometimes my phone loses signal even when i'm using only 3G which leads me to switch to 2G to catch the signal or reboot my phone many times and manually search for network.
i don't know if the problem has to do with the antenna or the bands of my phone.
and since i know nothing about flashing drivers or enabling bands.
i don't wana risk and end up by disabling any obviously enabled band.
i never took my phone to repair,because Lg service isn't available in my erea,plus i don't wanna give my phone to a dumb that would make it worse,because i fix my phone all by myself.
please help me solve this problem.
if anyone has any clue like repairing my 4G with octobox or trying to fix the antenna please.
any kind if suggestion is accepted.
best regards
Zakaria.
Edit : yesterday,i removed the back cover of my nexus 5 and found out that it's actually a D820
that's weird because rebooting the phone to bootloader it says D821 (H)
and i was wondering what does that (H) revers to ?
but the thing that confuses me is if it's actually a D820 why does it catches LTE near a 4G tower?
does that mean the bands are already enabled ?
do i still need to enable any other band to make it work properly ?
thank you so much in advance and waiting to hearing from you soon.

Note EDGE data connection not working

Hi,
I have a note edge n915G. It was passed down to me. Previous owner never uses data connection.
When i took over, i realize if i switch on data, my signal seems to drop a lot from H+, H to edge and then emergency call and no signal. It connects and disconnects constantly.
Also, it NEVER connects to 4g eventhough i have the right settings and my 4G is working on my other phone.
Flashed CM, stock rom from different n915g country and etc and it doesnt seem to solve the problem.
Could it be a hardware problem? Now i live in malaysia and this phone was bought in Singapore so it'll take quite an effort just to send it in for warranty. Thanks in advance.
edit: even without data, my signal drops on and off. What could be the problem?
Find updated modem and flash in odin
Sent from my SM-N930T using Tapatalk
use the scirpt from the n910t it will fix ur issues cuz ive done it all ready

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