[Q] Galaxy S4 LTE (i9505) connection issues... - Galaxy S 4 Q&A, Help & Troubleshooting

Hi guys,
I'm using the Google Play Edition ROM for some weeks now and noticed something strange.
I have one of the best ISP's in my country (Belgium) which has almost everywhere 3G and on the most places even 4G. In the past I had very good 4G signal almost everywhere with my HTC One but with the Galaxy it's always stuck to 'E' and very occationally I get 'H' or 'H+'. But let's say for the most part, like 90% of the time, I only manage to receive 'E'...
The specific ROM:
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As I'm not allowed to post in the development thread itself, I thought I could ask it here...
I already tried setting different connection types:
but none seem to work like it should. Or they work but I keep being stuck in 'E' mode...
EDIT:
I also tried using the 2 different kernels, but no change.
Another thing I noticed, when I'm on the phone with somebody I can hear them clearly but they all say my connection get's disrupted and they can't hear me (or not clearly) but the connection stays present.
Thanks!

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[Q] Wifi calling quality suck (Stock GB)

I had 2.2 Froyo and the wifi calling quality was kind of weak, would be staticy and chop in and out, can't really make sense of what the other person says, he says the same with me
I decided to get CM7 7.0.1 and it did the same thing.
I then tried another router and it still had the same problem.
I now updated to 2.3.4 rooted and it still has the same problem.
Sometimes I even lose the call completely and it drops after a bunch of loss
Am I the only one? I couldn't find a post on the MT4G forums about this, nor do I know how many people actually use wifi calling.
I registered at T-mobile the 'Free Wifi calling' where it doesn't deduct minutes so I prefer to use wifi, just don't know how to fix this
tl;dr
2 different routers, 3 different OS's, all combinations, same issue
What are your internet speeds like?
WiFi calling works like a champ here. No issues at all unless I get to far from my router / repeaters. I have 100Mb internet though.... so speed isn't really an issue.
thanks for the reply
i'm probably 10ft from the router
i have a 25mbps/25mbps FiOS with 1-2ms jitter
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There's a screenshot of a speedtest just now

NET10 nexus 4 T-Mobile APN settings

I don't know but in Miami I think AT&T sucks everyone I know drops so many calls, bad call quality, and average data. AT&T sucked for me on net10 and now they have a data cap 1.5gb. Now T-Mobile is much better for calls but data is weird just doesn't work sometimes it just freezes and I have to turn mobile data off and on.
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Sent from my Nexus 7 using Tapatalk 2
I just created the same thread lol. I already tried this, didn't work for me
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I am able to access "Factory Mode" when trying to get to download mode it looks like some chinese recovery at least there maybe a possibility to root?
Im a lil stumped would appreciate any advice on how I can get this device working? or is this a lost cause? The phone is as Ive read in other threads SW is MOLLY and custom build version is I9228.
Thigns Ive tried:
-factory reset
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Network Signal disappear often with my i9500 phone

I have the Galaxy S4 i9500 and i have very strange Network problem:
When im on the way- the netwok works (means i can call and get calls) but i dont get the data network to work (i have low data network signal). Means i cant get even Whatsapp messages:
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When im at home- in certain places i dont get any network signal. But i can see that the Sim Card is inserted:
Now, when i was trying to isolate that problem and i start to think what kind of problem it is exactly. If it is software (Android version or modem- ill burn ROM on it and so) or Hardware problem (in that case i will buy the network housing or the part i will need to buy to fix that) but i cant get determin what cuase that exactly.
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My phone details are:
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Are you rooted?
Sent from my SM-G935V using Tapatalk
Hi. I am yes using as s8 port. Have always been rooted and never had this symbol. Can I remove it!?
I had that symbol on a custom ROM. It disappeared after a day, no idea what it was though, sorry!
Ok thanks. Hopefully it'll go then!!
That icon is lte connection its your mobile data at a much faster pace then 4g
Ok. If i turn off wifi the ymbol disappears but I have no data. So I have a problem with this rom maybe as only wifi works it would seem.
Ignore that last post. So this symbol is here whether I'm on wifi or 4g. It's huge. Don't like it! It's on as well as saying 4g.
Its the IMS logo. You can delete anything relating to IMS using titanium or any other program to remove it.
IMS?
Its more like your connected to a much higher quality reception
https://forum.xda-developers.com/tm...ps/mod-remove-rcs-service-volte-icon-t3362336 this link will allow you to get rid of it
For VOLTE connectivity.

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