Laggy phone when switching between wifi and 4g or low signal - Samsung Galaxy S10+ Questions & Answers

Hi,
I have S10+ HK snapdragon version and always when phone switching between WiFi and 4G, like when Iam leaving my home/work and getting out of range of my router, it becames really laggy for a few seconds, and its really annoying when Iam typing text message or something.
Also these lags happening for example, when I was travelling in mountains with bad service... and my signal was jumping between really low and Emergency calls...
Previously I had S7 edge and never have this problem
Is there anyone who have same problem or have some advice what to do?

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Dropped calls from my X1

Hello guys,
I just got my X1 (Generic_UK) few days ago, and i was shocked by the poor reception or i might say the dropped calls by the phone.
In fact each conversation the phone was managed to dropp the call by itself after 2 -3 minutes maximum, so i had to call the other party all over again.
I updated the firmware to R2AA010 yesterday and switch the network to GSM only, and that didn't fix this problem, and i also used my friend's card (different carrier and end up with same result)
Any one can help me with this issue ? if I'd never fix this problem , I'd definetly sell it out.
Thanks.
probably won't help, but my phone shows exactly the same behaviour.
i am on a 1800 GSM network.
an update of the radio rom to the newest version that is available here on the forum did not help.
TBH this sounds like a phone fault... mine works flawlessly and now that I have 010 ROM its even better... are you in a very remote area? if not perhaps its a fault and you might need to take it back?
The HTC Touch HD seems to be affected by exactly the same problem. (link)
Strange
Well, I'm running the Voda X1i but flashed to Generic UK R2A_10. I have had nothing but perfect calls, only 1 call dropped but I don't think it was my fault because my signal was max.
It's true the signal is often low, I keep it next to my iPhone which is also on voda and comparatively the iPhone has better signal, but the sound quality in my iphone is appauling and in comparison, when I make a call on my Xperia it's like the person is standing next to me.
I have put up with the BS from my iPhone for too long, as well as the horrendous echo that anyone that calls me suffers from and invariably complains about and refuses to call me.
If you're in a good signal area and you're still getting problems on R2A_10 i'd recommend returning it for a replacement.
X1 definitely has serious reception problem.
I am not taking about the number of bars but off and on signal are comepltely gone and it will start searching for a network.
I have tested this by putting the phone on the table and by observing the signals bars over a long period of time. Often I have noticed full signal bars and many time there are not signals at all.
Service is weak in my area but none of my pervious mobiles have shown such a poor reception.
zeemalik said:
X1 definitely has serious reception problem.
I am not taking about the number of bars but off and on signal are comepltely gone and it will start searching for a network.
I have tested this by putting the phone on the table and by observing the signals bars over a long period of time. Often I have noticed full signal bars and many time there are not signals at all.
Service is weak in my area but none of my pervious mobiles have shown such a poor reception.
Click to expand...
Click to collapse
same here, ive had major reception issues compared to other handsets on same network
I have never had any problems with reception or dropped calls.
?????????

[Q] S5 droping cell reception

Hey yall, Recently got my new s5 from t-mobile. SM-G900T. i love this phone, but i have one issue that is very very annoying. At complete random it will say 4g or 4g lte <depending on where im at in my town>. i will show almost full bars but completely loose cell and data reception. unable to load web pages, and unable to make calls. it normally takes a power off let sit and turn on to fix. but that can last anywhere from 5 minutes to 3 days.. stayed in a hotel with Full lte. my S4 worked perfectly in the exact same spot. my S5 constantly droped out and would not load anything or call anyone untill i reset. all apps are the same thats on my s4. wifi seems to work when the phone network drops.. Has anyone else experienced this? its highly annoying and irritating. no error messages other then <you are not online> even tho my lte says full signal. <put my sim in my s4 to see it work perfectly in same area>

Strength of network signal unstable

Hi all,
I recently bought this phone, and I'm very satisfied.
However I found a "problem".
The strength of my network signal is very unstable.
Without moving the smarthpone too much, It varies a lot.
Here there is an example, i didn't move the phone and I didn't change the way I handle it (or at least not too much): Unfurtnately I can't post outside links...
I started monitoring the signal, and it was very high. Then it started to go down.
When it was near the zero, where is the green arrow, I made a phone call: the signal went up again.
So, seems, that while the antenna is in idle the signal is very unstable. But when I make a phone call, the signal strenght goes up.
What scares me is that the signal strength varies too much while not on call. Just see the spike before the arrow...
Someone has experienced this too?
Is this normal?
Thank you very much
In the US I was using a Note 2 for a couple of years on the Verizon CDMA network. I must say the Note 2 on that network has been pretty reliable and I live in a rural mountainous area. I got my Zuk and I could not use Verizon plan with it, so I got a pay as you go plan with At&T GSM to demo it, because I really wanted a dual sim phone. The service is not as good, I work at many locations where I have to go in basements, and even in the city areas where I have full 4 bar service, I cant keep signal with the Zuk, but with the Note 2 it is no problem. In my home basement I can keep service somewhat, but sometimes I even will miss calls. I wish I had a spare AT&T phone that is sold in the states to compare it with for service.
So sadly I think my trial with my beloved Zuk is coming to an end and it is going to end up on Swappa before long.
I got your point: maybe the ZUk Z1 doesn't have the best reception ever.
However, apart this, I'm experiencing a very strange behavior.
Almost motionless, the strength of the signal varies too much.
But, maybe even more strange are these snapshot: the green arrows indicates when i started a phone call. (here too, the phone almost motionless)
h ttp://i.imgur.com/fSI1dED.jpg
h ttp://i.imgur.com/OOmfrM9.jpg
h ttp://i.imgur.com/sUYKY8N.jpg
h ttp://i.imgur.com/1JjOR9t.jpg
h ttp://i.imgur.com/f2NuSYv.jpg
h ttp://i.imgur.com/nwfyTJX.jpg
In particular, here can be seen the spike that worries me so much: h ttp://i.imgur.com/KZRPndR.jpg
Possible that i'm the only one experiencing this problem?
Of course, where the signal is stronger I don't have these problems.
So, I think there is a bug in the managing of the antenna
Sorry for the broken links, otherwise I didn't can post them.
Nopaste said:
I got your point: maybe the ZUk Z1 doesn't have the best reception ever.
However, apart this, I'm experiencing a very strange behavior.
Almost motionless, the strength of the signal varies too much.
But, maybe even more strange are these snapshot: the green arrows indicates when i started a phone call. (here too, the phone almost motionless)
http://i.imgur.com/fSI1dED.jpg
http://i.imgur.com/OOmfrM9.jpg
http://i.imgur.com/sUYKY8N.jpg
http://i.imgur.com/1JjOR9t.jpg
http://i.imgur.com/f2NuSYv.jpg
http://i.imgur.com/nwfyTJX.jpg
In particular, here can be seen the spike that worries me so much: http://i.imgur.com/KZRPndR.jpg
Possible that i'm the only one experiencing this problem?
Of course, where the signal is stronger I don't have these problems.
So, I think there is a bug in the managing of the antenna
Sorry for the broken links, otherwise I didn't can post them.
Click to expand...
Click to collapse
Let me look and see? I can see the bars in the notification area are not for real.
How did you bring up the advance strength meter, I would like to give that a try?
It's an application that I downloaded from the store.
In italian It is called "Info Segnale Rete"
Nopaste said:
Hi all,
I recently bought this phone, and I'm very satisfied.
However I found a "problem".
The strength of my network signal is very unstable.
Without moving the smarthpone too much, It varies a lot.
Here there is an example, i didn't move the phone and I didn't change the way I handle it (or at least not too much): Unfurtnately I can't post outside links...
I started monitoring the signal, and it was very high. Then it started to go down.
When it was near the zero, where is the green arrow, I made a phone call: the signal went up again.
So, seems, that while the antenna is in idle the signal is very unstable. But when I make a phone call, the signal strenght goes up.
What scares me is that the signal strength varies too much while not on call. Just see the spike before the arrow...
Someone has experienced this too?
Is this normal?
Thank you very much
Click to expand...
Click to collapse
Me too Bro.. Recently bought this phone and now I am having very poor network reception for Airtel telecom operator in India. Places where i used to have good network coverage with my previous phone aren't any longer a good reception area when using Zuk Z1.. When checked in GSMArena, i saw that zuk doesn't have that much bands supported for 4g/LTE. However, that shouldn't mess up with the 3G/2G signal receptions, right.? Any idea that updating to /CM 13 will help.?? Or any other option to upgrade the radio firmware so that network reception will be better.? Pls lemme know if anyone has some clue on this.. Thanks in advance..

Apps close when cell coverage changes.

Okay, this is beyond frustrating. I'll preface by saying that this was happening with my Note 4 as well, I only got the s7 edge in hopes that the problem would go away, but it persists even with the brand new edge.
My house is on a very frustrating edge of a 4g signal, so my phones bounce from "1x, 3g, 4g, and just nothing" all the time. The signal is always in flux. The weirdest thing is, that anytime the signal changes, any apps that I have open close and the phone freaks out. There is no error message or app crash, they just close and the screen flashes. I have the phone on wifi which is rock solid, sub 10ms latency, 90mbps Comcast connection. Havery tried different routers just to rule out some type of wifi issue. This only happens when I have a cell signal, and it changes to something else, like from 3g to 1x. But with solid wifi, why would there be any issue at all?
Any help would be great.
Edit: I notice it most when playing games. Nothing like running a war attack on clash of clans and having your phone dip out on you. Also, this may be important. IF I TURN ON AIRPLANE MODE AND RUN WIFI ONLY, IT WILL NOT HAPPEN...

B29 Update Bugs

Since I updated to B29 I have noticed some serious cellular connectivity issues. While browsing the web I simply get no response. I have to toggle on/off the data switch in order to fix the connection, despite the phone showing 4G LTE and 3 or more bars on T-Mobile. Even accessing the Google Play Store I get a message the following message: "No Internet connection. Make sure Wi-Fi or cellular data is turned on, then try again", despite showing 4G LTE and 3 bars on my phone. Is anyone else experiencing the same bug? If so, has anyone found legit a fix? Or perhaps there is another bug you are experiencing. Please share with us in the forums.
Thank you for your time.
I haven't experienced any network issues since I updated. Granted, I didn't have problems with internet on B27 either. Which provider do you have? Did you fully wipe data when updating?
The only bug I've experienced is that sometimes apps don't stay in memory and have to be restarted everytime I switch back. A restart fixes the issue though
No issues on B29 with Verizon here.
No issues here on AT&T stock B29
Same here on att no issues.
I am on AT&T and wonder if others are having issue with going inside a building where the signal is weak and getting a "no signal" message? On the ZTE USA web site it has been pretty much nailed down to the radio hanging on to a weak LTE signal and dropping it instead of automatically switching over to 4G or 3G like it's supposed to do. I have had this issue from the day one, before B27 and B29. Hopefully ZTE will get the bug worked out soon.
My suggestion , before you blame the update is to call t-mobile and ask. They often have problems with towers, being hacked,etc and will not say anything unless asked.
I'm having issues with audio level dropping randomly. Happens when watching YouTube or listening to Apple music.
Some apps that could do background audio playback won't do it anymore in b29 for me, and the Facebook app closes when the screen goes off. Signal and all else seems to be the same for me.
B4oE said:
Since I updated to B29 I have noticed some serious cellular connectivity issues. While browsing the web I simply get no response. I have to toggle on/off the data switch in order to fix the connection, despite the phone showing 4G LTE and 3 or more bars on T-Mobile. Even accessing the Google Play Store I get a message the following message: "No Internet connection. Make sure Wi-Fi or cellular data is turned on, then try again", despite showing 4G LTE and 3 bars on my phone. Is anyone else experiencing the same bug? If so, has anyone found legit a fix? Or perhaps there is another bug you are experiencing. Please share with us in the forums.
Thank you for your time.
Click to expand...
Click to collapse
I solved this issue with me a LONG time ago by turning off VoLTE. Did you try that?
I don't want to 'blame'the update, but ever since, whenever I minimize an app and then re-open it, it loads all over again. Webpage login again, games reload from beginning. I'm probably just missing something,...and it has nothing to do with update. Maybe I toggled something by accident,... Any ideas?
I got my new 2017u yesterday (iam german) and the first iam really impressed about the LTE/4G receiving but the 4G indicator seems to be buggy because it shows me allways 4G but in real i have only 3G/H. When i have real 4G/LTE it shows 4G and under that LTE.
I have my rooted so is it possible to change that, that it shows the real receiving instead of allways 4G?
tasar said:
I got my new 2017u yesterday (iam german) and the first iam really impressed about the LTE/4G receiving but the 4G indicator seems to be buggy because it shows me allways 4G but in real i have only 3G/H. When i have real 4G/LTE it shows 4G and under that LTE.
I have my rooted so is it possible to change that, that it shows the real receiving instead of allways 4G?
Click to expand...
Click to collapse
Look here
http://forum.xda-developers.com/axon-7/help/axon-7-wrong-4g-icon-status-bar-t3461166
HSPA+ in US is marked as 4G. I don't know how to change it with root, if you find a way post it!
thanx for clearing, dont know the difference. Hope that someone find a way to change that, but iam not the person, have not enough know how for that
Horizontal notifications are still unusable. How does something this simple still not fixed? Granted I hardly ever hold my phone horizontal but when I do and pull down the notification bar, I'm reminded how shoddy this software can be.
runderekrun said:
Horizontal notifications are still unusable. How does something this simple still not fixed? Granted I hardly ever hold my phone horizontal but when I do and pull down the notification bar, I'm reminded how shoddy this software can be.
Click to expand...
Click to collapse
This is because ZTE chose a very high DPI setting for the phone making everything huge. I changed mine to 480 a while ago and everything is much smaller and landscape mode is a lot better. Granted there are still some graphical glitches here and there because of that change, but overall I'll take them. Hopefully when Nougat comes out they will ditch their in house quick toggles for stock ones and keep the new DPI slider so people can change it properly.

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