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[Q] 4g connection issue-keep dropping down to 2g

I just got the 200mb data plan It support 4g
but HTC sensation keep dropping down to 2g
I read from other site to change the sim card and i did still it keep dropping
i try WCDMA ONLY for the network 4g will stay connected but then my phone signal will drop
its been a known issue for this phone i mean its is the best phone on tmobile right now but what is the point if it keep dropping connection
does anyone know how to fix it
i read somewhere that it has to do with the signal band as well

Same here, but mine does this once in a while. Not often.

Shoot I thought I was the only one.....what speeds are you guys receiving over the "4G" network?

i call tmobile up but they didn't seem to help much at all
i mean if i have to go outside to use 4g what is the point
i have 4bars signal inside the house just that it keep switching to 2g
someone told me 4g connection is separate from phone signal
but if so then how come when i switch to WCDMA ONLY mode i get 4g connection, how come my phone signal drop to 0 bar

I get it very rarely as I said. I'm getting good speed over 4G:
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im on my third sim card and still had spotty 4G coverage...installed the new InsertCoin RC1 2.3.4 and it seems to be working great now...

@OP, is this your first 4G phone?If not, what kind of signal were you getting before? If you get good 4G on another phone but not this one ask for a warranty replacement.
Is this only happening in your home is it everywhere you go? If it's everywhere, see previous question.
If it's in your home only Where do you live? Call T-Mobile and ask about the new 3G in home repeater. It's being trialed in a few markets but I can't remember which ones. Maybe you qualify for one if your having signal issues in your home.

this is my first 4g phone
what is InsertCoin RC1 2.3.4
i would like to try see if it work for my phone

4g outside US

Hey guys, one quick question.
See, I live in Venezuela, I bought my sgs4g while visiting the states about 6 months ago... Of course down here we don't have 4g, and there are no plans for it just yet.
Normally my phone gets 3g connectivity and that's fine. However messing around with market enabler app, I set my carrier to tmobile, and i noticed that the app changes the apn values to tmobile's.
The weird thing is that after a few seconds, the phone switches from 3g signal to 4g. How can i be getting 4g if there's no such thing in my country? Though, speeds are the same as 3g.
Not just that but also I'm wondering how in hell can i get internet connectivity using tmobile's apn? Epc.tmobile.com ? If I'm living in Venezuela with another carrier Sim card...
My theory is that this phone is set to display 4g connection when connected (or set to be connected) with tmobile network. Even if the real connection is only 3g. I think this because the only way to get the 4g icon is to set tmobile apn and Sim card code, 310 260. I wouldn't get 4g otherwise.
What do you guys think?
Sent from my SGH-T959V using XDA App

Technically speaking, T-Mo's network is only 3G+. Pretty interesting (and funny) that they'd make the icon say 4G though. Haha.

So, you're saying that 4G basically represents the H that some phone display?
The i9000T also being used in my country displays the H instead of 3G most of the time, meaning the 3.5G or enhanced 3G is in use. Is that the same for 4G from t-mobile? I thought t-mobile's 4G was a "real" 4G network. Although it's indeed suspicious that my phone has never displayed the "H" (hsdpa) when other phones like the i9000 clearly do so.
But my question remains. Why do I get 4G icon only when using t-mob's APN? Otherwise is a plain 3G icon. I can't see any differences in speed, but I'd like the 4G icon all the time!
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Sent from my SGH-T959V using XDA App

[Q] CM 10 issues

Hello,
I would like to know if anyone is experiencing these issues after flashing to CM 10 (nightly or M2) and if you are experiencing them have you found a fix.
1. When I am in a 4G LTE area my service drops and keeps switching between 3G and H+ but it never picks up LTE.
2. It takes a really long time to send a MMS.
3. Screen times out when typing in the quick reply box for texting.
Thanks in advance.

njbballjerzy5 said:
Hello,
I would like to know if anyone is experiencing these issues after flashing to CM 10 (nightly or M2) and if you are experiencing them have you found a fix.
1. When I am in a 4G LTE area my service drops and keeps switching between 3G and H+ but it never picks up LTE.
2. It takes a really long time to send a MMS.
3. Screen times out when typing in the quick reply box for texting.
Thanks in advance.
Click to expand...
Click to collapse
Hmm, it seems kept only getting 4G the other day regardless what I did. After reregistering my network (Settings -> More... -> Mobile Networks -> Network operators -> AT&T) now every time I text it would go 3G/HSPA+ then back to 4G so I though that was normal.
I don't get any lag when I'm texting anyone. and when I go to quick reply it screen doesn't time out.
This is on the 101412 build. I did reinstall my stuff last night to get the new gapps 101112 but I doubt that would've made any difference.
I would try re-registering your network and see if that helps any.
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UZ7 said:
Hmm, it seems kept only getting 4G the other day regardless what I did. After reregistering my network (Settings -> More... -> Mobile Networks -> Network operators -> AT&T) now every time I text it would go 3G/HSPA+ then back to 4G so I though that was normal.
I don't get any lag when I'm texting anyone. and when I go to quick reply it screen doesn't time out.
This is on the 101412 build. I did reinstall my stuff last night to get the new gapps 101112 but I doubt that would've made any difference.
I would try re-registering your network and see if that helps any.
Click to expand...
Click to collapse
I just re-registered. I'll wait for a few hours to see if I notice any differences. Hopefully that'll fix some of my issues.
Thanks

IF your 3G internet download is ridicolously slow..

Thought I put this here, in case someone has the same issue.
Just got my Orange UK S4. Orange also run a 4G network called EE, and my phone is EVR ie EE network coded.
My contract is NOT on the 4G network, since I didnt need it.
My first attempt at using the internet connection (away from wifi) was a download of a 1.5meg PDF attachment in the email app, and it was ridiculous slow, like it took 5 mins
Also the browser was not responding or downloading data at all.
So had a brain wave and went into network settings/more networks/mobile networks/network mode/ and changed from 2g/3g/4g, to "2g/3g"
and this solved the issue perfectly.
I think the problem is that in the 4G mode, the phone keeps trying repeatedly (like for every packet) to connect in 4g, and gets rejected by the network, so downshifts to 3g or HDSPA for downloading one packet, and repeats the whole merry cycle...
Hope this might some confusion for others in the future.:laugh:

More likely that the phone was camped onto an Orange 3G bts initially. By swapping network type selection you forced it to pick up a tmobile site....remembering that tmobile and orange share each others networks now under the banner of EE.
A lot of orange sites were never that fast anyway, even worse now the join with tmobile. They are relying a lot more on the tmobile 3G sites.
Sent from my iPad using Tapatalk (how ironic is that eh)

On T-Mobile here and switching LTE off makes absolutely no difference to my speeds :/ Ran a test with LTE on and off and I get 10Mb on and off.
Sent from my GT-I9505 using Tapatalk 4 Beta

No probs on 3 network :good:
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OP here!
The first download was crazy slow, 1000 times slower than when I was on the pure Orange network, but it seems fixed now, and on my new rom flashed yesterday, it seems ok.
Completely agree about the orange/EE service at present. It has become terrible, I think they are shoving all subscribers onto one network, and its becoming harder to make a call without it dropping etc... And this is in West London!

Calling Problem (Airtel 4G)

[SOLVED] Can't make a call. It disconnects on its own while showing the message as that in the screenshot that I've attached.
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(On LTE). Doesn't work on 3G as well. On 2G, it's fine. But I'm not satisfied.
Current ROM- CM13.0 Unofficial by sultanxda.
But this problem has been there on every ROM I've tried. This problem was not there when I was using a 3G SIM. I've tried switching 4G SIMs but the problem persists. Please help! I want to use LTE and make calls together without changing the settings each time. The signals remain there the rest of the time but it gets disconnected as soon as I make a call. FUN FACT- SMSs work fine. Note- This isn't a ROM problem. I've called the technical support but they just don't know how to handle ****. This is very disappointing.
I'm using an Airtel SIM (India)
Thanks!
Sent from my A0001

Where in India? I use Airtel 4G and never experienced this issue.
BTW, I am from Bangalore.

Shankar9822 said:
Where in India? I use Airtel 4G and never experienced this issue.
BTW, I am from Bangalore.
Click to expand...
Click to collapse
In Faridabad (NCR). I just don't know what's wrong. I've tried almost everything.
Sent from my A0001

Airtel doesn't support voice over LTE. But your network should be automatically switching to 2g when a call is made and then back to 4g after the call. There will be no data access during the call except for WiFi.

rappa619 said:
Airtel doesn't support voice over LTE. But your network should be automatically switching to 2g when a call is made and then back to 4g after the call. There will be no data access during the call except for WiFi.
Click to expand...
Click to collapse
What about that dialog box in the screenshot?
Sent from my A0001

Try going to a place with a good signal and doing a network scan and select airtel manually instead of automatic.

There's a tower right next to my place, so I always have full connectivity. And I've already tried selecting Airtel. The problem still persists.
Sent from my A0001

If you know how to flash custom baseband/modems, maybe you can see if a different one can fix the problem.
If that doesn't work, then a factory reset is the last resort.

Nope, tried that as well. I perform factory reset every now and then.
Sent from my A0001

Well, I forgot to mention that the issue got resolved automatically after a few days. I don't know what actually fixed it. Maybe jgcaap's ROM, or a complete wipe. But it was fixed. Weird issue.