Nexus 5, 4.4.4, stock
Hi,
I am trying to tether my phone to my laptop but have come across a weird issue. The phone shows signal strength of ~100dBm and HSPA.
I monitor the health of the connection by continuously pinging www.google.com. Every few minutes the ping jumps from ~100 to ~10000ms and browsing becomes impossible. The only way I have found of getting it back is to turn on and off aeroplane mode and then re-enable tethering.
I think its something to do with the HSPA connection reducing to 3G when not in use, hence keeping a continuous ping going, but this hasn't helped.
I installed RF Signal Tracker to try and work out what is going on. The graph showing signal strength hovers around 100dBm but occasionally blips to ~50dBm (still HSPA) for a few seconds, which is when the ping rockets and the connection becomes unusable.
I am tearing my hair out trying to get this to work properly - can anyone shed any light on what is going on?
many thanks
Related
Hello,
Why is this happening:
I'm using xoom 3g with hsdpa -connection. If I ping my xoom's ip from outside (or another address from the console) to maintain hsdpa -connection, the browser does not work as it should.
Sites do not load completely; the browser 'loading bar' stops in the middle and nothing happens. About only 1 image is loaded from the sites then nothing. But the ping keeps getting responses. I'm a bit confused why this is happening
- Andy
Ever heard of a DOS attack? It's where multiple clients ping a host on the internet so that there's so much traffic going to the host that it can't operate properly. Now, most hosts on the internet have a decent connection meaning it takes a lot to bring them down. You're on a 3G connection... which are flakey at the best of times, nevermind if someone's constantly jamming icmp packets down it.
Of course, I could be wrong, but your symptoms definitely sound like that's what's happening.
Why do you have a constant ping going anyway?
Thnx for your quick response!
The host that I'm pinging from the xoom is google.fi and when I'm pinging xoom, it's from my own server that is not under dos attack. I know that 3G connection can be a poor one but that's not the case imo. At least my ping response times are 20-40ms.
I did a fast testing with the new firefox5 and this effect does not happen with it. I have to do some more fiddling with firefox.
The reason why I'm pinging constantly is to maintain HSDPA -connection and prevent xoom from roaming when I'm actually using the device like browsing the web and using gtalk. The roaming happens way too quickly (xoom drops to 3g from hsdpa)
- Andy
wisekki said:
The reason why I'm pinging constantly is to maintain HSDPA -connection and prevent xoom from roaming when I'm actually using the device like browsing the web and using gtalk. The roaming happens way too quickly (xoom drops to 3g from hsdpa)
- Andy
Click to expand...
Click to collapse
Does that actually work? I see no reason why it should.
ed. I can't even reproduce what you're seeing. It may be that we're on different carriers, but my device isn't responding to pings from the world while on mobile data.
It's normal for HS*PA to fall back on 3G sometimes when it can't actually maintain a HS*PA connection.
ydaraishy said:
Does that actually work? I see no reason why it should.
ed. I can't even reproduce what you're seeing. It may be that we're on different carriers, but my device isn't responding to pings from the world while on mobile data.
It's normal for HS*PA to fall back on 3G sometimes when it can't actually maintain a HS*PA connection.
Click to expand...
Click to collapse
Yeah I thought the whole point of it falling back to 3G was because the wasn't capable of holding an HSPDA connection? Certainly if I'm travelling I get a mixture of 3G and H... and sometimes still GPRS (*shakes fist at Orange*).
ydaraishy said:
Does that actually work? I see no reason why it should.
ed. I can't even reproduce what you're seeing. It may be that we're on different carriers, but my device isn't responding to pings from the world while on mobile data.
It's normal for HS*PA to fall back on 3G sometimes when it can't actually maintain a HS*PA connection.
Click to expand...
Click to collapse
Yes it works with my provider anyway.. On the status bar when roaming/doing nothing xoom says that my connection is '3G.' When I start to ping it (or from it) the connection changes to HSDPA; logo changes to 'H' and it prevents it from falling back to 3G. Everything works much faster when the roaming doesn't happen and for some reason even the conn dies sometimes (no internet connection) when it keeps changing it back and worth.
Didn't have too much time to test it with firefox5, but it seems that this doesn't happen with it.. but firefox itselfs crashes a bit too often Maybe this whole "thing" is fixed in honeycomb 3.1.
- Andy
So the 2.20 OTA update released claims that it provides 3G/4G connectivity fixes... Does anyone know if this solves the occasional loss of connectivity (mobile network says "disconnected," "disconnected due to the network being unavailable," or "turning on" endlessly) requiring airplane mode toggle problem?
I discovered within the first few weeks of owning the phone (including 2 swaps which all did the same thing) that any time I leave a major area with good coverage my phone consistently does not work (texts do not send, phone calls cannot be placed or received, mobile network says disconnected or turning on), even though sometimes I may have 1-3 bars and the 4G symbol. Airplane mode only sometimes fixes the problem, and then it may or may not happen again within a few minutes if I am in the same area.
It's driving me crazy and I don't want to send it in and receive a refurbished phone... For all I know I could get one of the same early release devices that has the exact same problem.
I was at a friend's house on a nearby island this past weekend and the phone simply would not work. Nothing. I had 2-3 bars and "4G" THE WHOLE TIME. Upon leaving the island and returning home it is now working.
i never had a connection drop after updating to this rom.its awesome and battery life is insane.
Hello there,
I'm having a bit of a issue with my 3G connection; I'm getting a lot of different issues while using it inside of my house. The main problems I'm having are the following:
My connection keeps freezing; even with 3-4 bars in 3G coverage. It also happens randomly, it can work a while then stop working and then continue to do so. Sometimes I'm even barely able to use the 3G connection. Putting the phone in airplane mode, and then back "usually" solves it, but sometimes it happens every fifth minute so it's really annoying.
The phone keeps changing cell towers to other towers with poor 3G coverage (which pretty much kills my connection), even when it's connected to a 3G network with 3-4 bars it changes after a while to a network with 0-1 bars in coverage.
Sometimes while loading pages or when trying to download files they get corrupt due to the connection; I've got no idea why this is happening.
I've been in touch with my telecom provider before and they've told me that there's no issues with their celltowers in the area; they've even been there to check it and I'm the only one in the area who've reported the issue. I've tried to put the simcard in another phone, but still no luck.
Is there any way to resolve these issues? I've been thinking if there's any way to force the phone to stay on the same celltower, but I've not found anything regarding it as of now. Any ideas?
Bump. Anyone?
I can't figure this out to save my life. 6039s Android 6. No root. No special mods. Nothing. Bone stock.
In the middle of the day today I suddenly started getting a horrendous wakelock. I thought it was a Google Play issue but it turned out that it's some kind of mobile data issue.
My LTE connection isn't working right. It's slow for some apps and non existent for others.
For instance my sports score app loads at 2G speeds. My web browser seems to work okay. But my t mobile tuesday's app gives me a big warning that I'm not connected to the internet at all. And the Google Play app gives me all kinds of warning that I need to have background data enabled to use Play, but background data IS enabled.
Making matters worse, when this issue is happening my phone enters a miserable and unstoppable wake lock that drains the battery so fast it hard to even charge it. And it saps up the system resources to heavily that the phone slows down to a crawl and can't be used for anything else. Not to mention the phone gets insanely hot from the excess processing. Could a tower issue that's causing a connection problem cause such a wakelock?
I tried doing a reset of the radio connections in settings, but I don't think it actually did anything because all my settings and connections were still there. Still had my wifi password, BT connections, etc.
I tried wiping cache in recovery but it didn't work. Says it did it. But on reboot I didn't get the "app 1 of 82 is updating". So I don't think it actually did that either.
I cannot figure this out to save my life.
I thought maybe it was a tower issue. But my wife has the exact same phone and it's working fine. I called T Mobile and they said they are having a tower problem near my house, but still...wife's phone is fine. And I've seen this problem now in 3 different locations across about a 5-6 mile range. So I have to have been on more than 1 tower in that time.
When I turn on wifi and have a wifi connection the problem goes away entirely. That's telling me that the problem is the system getting upset that it doesn't have a solid internet connection. Changing the connection to 3G or 2G does not solve the issue.
The problem lasted the whole second half of yesterday, was fine overnight while I left wifi on, was fine on day 2 when I was back to 4G networks, and then suddenly is back again.
Anyone got any ideas or suggestions?
Is there some server android is trying to stay in constant contact with that I can block the connection to? Perhaps limit background data to something? I can't figure out what.
This update was irrelevant. Turned out to be a red herring. Still having the problem.
Nevermind this update. STill having the problem
I give up. I'm about to throw the phone against a wall to smash it. The system has become totally loused up. Whenever it goes into these goofy wakelock states the system is so overtaxed that everything takes forever to process. Nothing solves it.
And its' getting worse. Now I have oddly limited connectivity.
T Mobile's tech support was useless. They had me thinking it was a tower issue. That was 3 days ago. Now suddenly they have no records of a tower issue in my area over the last week.
I can make voice calls. But I cant' send text messages. I can use my web browser to search the internet, but not SOME apps that need data like a weather app or Google Play. Other apps work fine to pull data.
Yet it says I have an LTE connection the whole time.
This is the single weirdest issue I've ever seen on Android.
What in the hell could have just jumped in out of nowhere and started causing these issues?
Hello there!
I'm been having a strange problem with my device, which causes a semi reboot.
I mean semi, because it appears to be rebooting, but it's faster and it seems to not complete the whole rebooting process.
I've been investigating and discovered that it's related to WIFI.
I have a Archer C9 with 2.4 and 5Ghz wifi. Each is set to a different SSID, so I know which band I'm using.
My S8+ is a FD Exynos at ZTO/CRC7 Oreo.
There's a option in advanced settings of wifi section, that automatically alternates from wifi to mobile, when wifi signal is weak.
So I found a spot in my bedroom where the S8+ loses wifi signal for a moment, but it's sufficient to make it alternate to LTE, either in 2.4 or 5Ghz bands (even though the 2.4 Ghz gets 40~50% signal in that spot).
After that, the cellphone keeps saying that wifi is weak and won't let me reconnect to it, even if I'm close to the router.
After a minute it reboots and connects to the wifi.
I disabled that option and so far (15h) it hasn't rebooted yet, even if I go to that spot (it loses wifi signal there, but recovers after a few seconds)
Is that a software issue or a hardware issue?
Thanks a lot in advance!
seems like a software issue since it works after reboot
try resetting the phone to factory defaults