Stupid 4g dropping to 3g - Sprint Galaxy S 5 Q&A, Help & Troubleshooting

I just don't get why I can't get it to stay on 4g. If I turn off data and turn it back on, it finds 4g then goes back to 3G after like 30 secs. How can I fix this. Can I change bands or force let or install a new rom. I'm rooted with stock 5.0 rom.

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Can't connect to 4g on new ruu update

After updating to jcase's ruu update I can no longer receive data when on 4g only 3G. Anyone else experiencing similar issues? Any fixes?
I'm in same boat with you.
Sent from my HTC Thunderbolt
give it atleast 10 min.. it should connect, mine was doing the same thing and i was freaking out lol... for somereason the old radio seemed to connect faster
It's been hours.
Sent from my HTC Thunderbolt
I tried this and it worked. I downloaded the lte on/off program from the market switched my phone to just 3g and rebooted. When rebooted turned the 3g to lte only and rebooted. when rebooted turn it back to 3g/4g and rebooted and 4g was back to stay. Reboots may not be necessary but i didn't try this without rebooting.
I think I may to be on to something. Download LTE OnOff from the market. Try and toggle between CDMA auto (PRL) and lte + CDMA/edge. Run the ping test when you have the 4g signal in your status bar. If it fails, try to switch it to just LTE, if you do get a successful ping test, switch it back to lte + CDMA/edge. I'll have to see how long it lasts because I seem to be loosing full signal randomly while stationary. The bizarre thing is that it shows I have 4g signal strength, but the network is actually disconnected.
Already discussed here.
Turn off mobile data for 30 minutes, and check to see if its back on. If not, turn it back off and wait another 30 minutes. There are rolling updates in the North-East right now (Probably preparing for the LTE roll-out).
Runduck said:
I tried this and it worked. I downloaded the lte on/off program from the market switched my phone to just 3g and rebooted. When rebooted turned the 3g to lte only and rebooted. when rebooted turn it back to 3g/4g and rebooted and 4g was back to stay. Reboots may not be necessary but i didn't try this without rebooting.
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Yeah what he said.
So far so good.

Constant data drops

So I am currently running bamf 1.6.3 and I change kernals a lot, but one thing I can't seem to fix are the data drops. I live in raleigh, so no LTE, and am running the .7 cdma / .6 LTE radio combo. The data drops off a lot, more noticeable when changing towers. Even sitting at home with good signal it will just drop to 1x and is hard to get 3g back without a reboot. Anybody else see this? No reboot problems
So am I the only one with this issue??
Mine drops 3g and 4g for a second or two and then comes back. It has been happening a lot recently.
At one point in time I would have that happen, it was because of a local tower being screwed up. Maybe switch from eHRPD to the standard 3g network? or vice versa?
Had the same issue with 1.6.3 and went back to 1.6.1 and Im fine again. Ill wait for another version before updating again
Having this same problem but I'm on stock and it only happens while I'm on 3G....nothing but problem since I got this phone....did Verizon and HTC test this phone out? Gps problems,reboot problems,data problems,battery...I'm really sorry I left my carrier for this phone.
mbrown3460 said:
Having this same problem but I'm on stock and it only happens while I'm on 3G....nothing but problem since I got this phone....did Verizon and HTC test this phone out? Gps problems,reboot problems,data problems,battery...I'm really sorry I left my carrier for this phone.
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the NEW 4g network is going to take some time to get running properly and because of that will have issues as will the phones. Not everything works flawlessly off the bat, give time to get everything settled and figured out and it will get perfected.
With all the radio/prl updates they have been doing I wouldnt be suprised if it is caused from that.
I was having the same problem. Disabling eHRPD has seemed to fix it. I still see strange signal drops, but I'm not seeing data drops at all.
It's not a fix, but rather than rebooting, just turn on airplane mode, wait for the airplane icon to appear, and then disable airplane mode. I have the same issue you describe, so I just keep the airplane mode toggle widget on my second home screen panel.
I'm getting very frustrated with the inconsistent data connection on this phone. I halfway considered trying to get VZW to let me swap it for the Droid X 2 when it releases next week.
I have similar problem. I live in Northern CA with 4G coverage. The problem will be like this:
- 4G works OK, data works
- Moments later, 4G icon shown upload activity (arrow up sign)
- Shortly afterwards, no data. Mail, Google Maps, etc. failed
Fix is to turn Airplane mode OR REBOOT the phone. I have tried switching radio mode (using LTE ON/OFF) but to no avail.
I understand 4G is new and so is the phone, but c'mon.. it has been sometime now and we are STILL paying for the service, even when the 4G network is down (few weeks ago) or when the phone loses data.
This happens to me on stock. Will be using 4G and then all data drops, then comes back, then drops, then comes back and repeats the cycle. Rebooting, airplane mode, nothing helps. Eventually it goes back to normal.
My phone went wacky yesterday. 1x and no data for four hours. Spent an hour on the phone with Verizon tech. We did everything possible and nothing. Then it just fixed itself. Had someone with a Droid X in the same room as me with great EV signal. Now the phone is perfect again. I dont get it . I have enabled REV A and now I put it back and that didnt matter.
zx12dak said:
My phone went wacky yesterday. 1x and no data for four hours. Spent an hour on the phone with Verizon tech. We did everything possible and nothing. Then it just fixed itself. Had someone with a Droid X in the same room as me with great EV signal. Now the phone is perfect again. I dont get it . I have enabled REV A and now I put it back and that didnt matter.
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Mine as well on 1.6.3 bamf remix. i had to keep going in airplane mode. it was stuck on no service or even the 4g icon (not blinking and no service)
We are Guenna pigs....
Since i have gone to the new leaked gingerbread radio not the latest froyo radio but the new gingerbread i dont have data drops
get it here http://www.multiupload.com/KQCRTNALV9
I too had continual problems with data yesterday (on BAMF 1.6.3) in San Diego. Kept switching from 4G/3G/1x. Today seems to be running smooth.
I'm gonna say thank god I'm not the only one, I don't live in a 4g area, yet there's many times my 3g will do the same arrow thing showing up and than everything fails. I'm running the new radio and perfect storm 1.4
, and drods kernel
Sent from my ADR6400L using XDA Premium App

no 2g to 3g?

As the subject says recently when i turn off 3g to use edge and then go to turn back it wont let me
The only way i can get back to 3g is to turn data off and on manually by hitting airplane mode
Any suggestions?
Thanks
no one else has this issue?
I have the same issue it takes a long time to get 3g, I'm with vodafone au so the network is horrible. This might be the issue that the phone can get the troubled network.
Sent from my Nexus S using XDA App
I have this issue. Only fix I've found is airplane mode/battery pull.
However, if the phone automatically switches down to edge (2g), it will usually switch back on its own.
Don't even get me started on the frequent complete data shut-downs though, and that's with what little there is of the signal present. Completely ruined Google Voice functionality.
Sent from my Nexus S
Well IM on ATT in the northeast US. I upgraded my radio from XX to UCK and I think it solved the issue for the most. A lot of outages here tho after our storm (apparently only on ATT tho as USUAL since verizon and sprint seem to be fine. ATT blows!

[Q] Odd 3G/4G connection issues ViperDNA

I rooted and flashed a rom onto my DNA the first day that I got it, so I don't know if this happens on stock or not.
Often, my phone will show 3G or 4G when I'm not in that coverage area. Such as, sometimes it'll show 4G when I move into a 3G area (even after being in that area for 10-15 minutes) and the data doesn't work.
Also, often, the data just doesn't work. I can show full bars with 4G, and not have access to Facebook or Internet. Same with 3G.
Sometimes I'll just have the bars, and no 3G or 4G icon.
So far I haven't found a surefire way to get around this, but I have had some limited success with going into airplane mode and back again.
Anyone else have this issue or have any suggestions? I don't think I've ever updated the radios or anything like that, so if that's something I should try let me know!
callmechewy said:
I rooted and flashed a rom onto my DNA the first day that I got it, so I don't know if this happens on stock or not.
Often, my phone will show 3G or 4G when I'm not in that coverage area. Such as, sometimes it'll show 4G when I move into a 3G area (even after being in that area for 10-15 minutes) and the data doesn't work.
Also, often, the data just doesn't work. I can show full bars with 4G, and not have access to Facebook or Internet. Same with 3G.
Sometimes I'll just have the bars, and no 3G or 4G icon.
So far I haven't found a surefire way to get around this, but I have had some limited success with going into airplane mode and back again.
Anyone else have this issue or have any suggestions? I don't think I've ever updated the radios or anything like that, so if that's something I should try let me know!
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I should mention that these issues were even worse with CM10.1.

Lte/4g latching/locking problem

Hi guys, Im running on stock galaxy s8+ global.
However, for the past few days, my phone cannot lock or latch into 4g or lte.
Heres what I have done.
1. Install 4g locker which solve it partially by using LTE only mode. Now the problem is, i cannot receive calls because VOLTE is locked in this phone (this is another problem)
2. Now everytime I wanted to use data and surf the net, I have to lock into 4G because it is much faster and after Im done i have to change it into auto, which automatically change my line into H+ so that I can receive calls. MANUALLY.
I know I have 4g coverage. Because I can connect to 4G in 4G only mode. Just that, after i set into LTE/HSPDA/GSM, it only shows 4g for a 2 second than its changes to H+.
It really is a pain to manually set everytime here and there.
Can anyone help me?
EDIT: NVM guys. Its already fixed. What I have done is, I went to the city centre, which have extra strong 4g signal, then it fixed it self. I dont know why.

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