Alright guys, I am done with this. I am at unlocked international/UAE S10+ (SM-G975F on Exynos) which is kept uptades as soon as OTA comes out. Now I am on Build PPR1.180610.011.G975SFXXSASH1, baseband version G975FXXU3ASG8. Sometimes (like 2-4 times per day!!) I got this issue, where my signal is lost, and network gets disconnected (Screen 1 & 2). At the same time, for comparison, my iPad LTE is still connected, without any network issue (screen 3). iPad uses same carrier as SIM 2, SIM 1 is different, but as you can see, both are disconnected. Once I turn on & off the airplane mode - everything comes back to normal just in a second (screen 4). I tried wiping cache, wiping network settings, but it's not helping! The issue is, that once it's disconnected I have no idea how long it keeps this way, and nobody can call me during that time, that pisses me off. It seems like a software issue to me?
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Hello
My wife's stock & unrooted S4 started to turn off when she returned for a vacation (she didn't use the network for 3 months; only wifi). From what she is saying and what I witnessed, it looks like an issue with the network : when she turned it on after a flight, it started to turn off itself after a minute. When she came home, I tested it and noticed the same issue. She wasn't getting any network signal however.
When I activated the wifi (don't think it's related but who knows), it started updating apps & everything and after a while, the network finally turned on and the phone stayed on for a full night. Phone calls & texting was working.
I thought it was settled but the phone turned off itself again after she got one of my message this morning; note that it's turning off without rebooting.
Is it a known issue ? Is there a fix or a test procedure I should go through ?
Phone is up to date.
Thanks !
Hi guys,
Ive had my Moto X for Tmobile for about 2 weeks now and I noticed that there are times when the phone would be stuck on HSPA+. The only way to reconnect it to LTE would be to turn off data or rebooting the phone.
Does anyone else have this problem? I tried a factory reset and it doesnt seem to resolve the issue.
Is my unit faulty?
Tuan
I have noticed the exact same thing, but have no idea what do to about it yet.
I spend a lot of time underground for work, losing all signal. I've found that it won't reconnect (even if you go in and search for networks) unless you reboot or, more easily, throw it into airplane mode for 10+ seconds and then come back out of airplane mode. I've had a few issues where I get stuck without data but have voice and the same process resolves it. I'm assuming it's all related. Really annoying when I go a few hours without data/voice when I don't check my phone and realize it dropped.
I need help this is driving me insane!
I've been running Dynamic Kat Rom for about 6 months or so now. Everything was working fine then all of a sudden a week or two ago I noticed my mobile data is not enabling at all.
I can only connect on Wifi and only receive SMS.
I've tried
- Messing will all the data/network settings
- Turning Mobile Data on and off -- no effect
- Toggling Airplane Mode on and off as suggested in some places
- Wiping everything but Data and reflashing latest ROM
- Reseating the SIM card
- several other things I forgot..
I do see the carrier information in the top left (AT&T) and I am getting signal bars.. but not indicator for 4G/LTE/etc
I've been messing with this for a week now and it's driving me insane.. I can't get a connection anywhere unless I'm on Wifi.
Anyone have any suggestions? I'm not super phone savvy, but willing to try any suggestions anyone may have.
Hmmm.. weird.
So I called AT&T and asked them about it.. figuring it could possibly be a carrier issue.
They told me to try things I had already done 100 times.. turn the phone off and on.. turn wifi off... etc.
I turned Wifi off... (which I had done 50,000 times before) and 4G popped up.
I guess they did something. So.. guess it's resolved.
Problem has returned.. same issue. I will have 4G signal for hours and then all of a sudden it will drop completely and I can't get a data signal no matter what I do.
I see AT&T in the corner and have signal bars, so I AM getting some kind of signal.. but no data connection whatsoever.
It seems completely random and intermittent.. I can have data signal for days with no issues then I will lose it for days.
Restarting the phone 5-20 times sometimes fixes it.. but that's about it. Anyone have any ideas what could be causing this?
Bad signal / carrier issue?
Call them and report a fault in your area?
I have called them multiple times, they will reset the signal.. sometimes it will come back right away, sometimes it wont.
And this happens regardless of where I am. I know for a fact where I am right now has a great signal strength. I get 4-5 bars on average. But this also happens at home as well about 20 miles away, which also has a good signal, or anywhere I go really it can happen. This isn't in the middle of nowhere either, it's smack in the middle of SoCal (LA/OC)
I'm beginning to think it may be a SIM card issue or a hardware issue with the phone. I'm going to try asking them to send me a new SIM card.
Another thing I will notice is when I have a working 4G LTE connection, and I'm on Wifi... it will sometimes CONSTANTLY switch back and forth between wifi and 4G like every 10 seconds, even when I have full signal strength on Wifi and 4G.
Disable Smart Network Switching in WiFi settings
it's nothing but a buggy headache, disabling might fix most of your problems, almost certainly the constant switching back and forth
Yeah forgot to mention I have disabled that. It's disabled now. It solves the constant switching back and forth (when I actually have a data connection), but that's kind of a separate issue as the losing data connection.
Hello,
I have the Sony Z2 on Tmobile USA, completely stock (no ROMs, or modifications).
Approximately twice a day, my Z2 randomly stops receiving calls, making calls, and accessing the mobile internet. It still shows plenty of "bars" on the reception meter, thus I have no idea that I'm not receiving calls.
When it happens, this can only be resolved with a restart, or turning on Airplane Mode, then turning it off again. The problem will usually come back within 6 hours, requiring another restart cycle.
If I have WiFi enabled when this is occurring, then I can still access the internet via WiFi, but I will not get calls and text messages. I get no indication anything is wrong, until I try to place a call and it fails.
When this happens, the "Signal Strength" meter (under "About Phone", "Status") does not change, it would read something like -95 dBm no matter where I would take the phone (even in areas of poor coverage). It appears the phone simply looses synchronization with the mobile network, but doesn't notify the user. Other phones on the same mobile carrier continue to work perfectly at the same place, so it's not a mobile carrier issue.
I've had this phone for 8 months, and this is a new phenomenon.
This is Z2 model D6503 and I am on the latest firmware (Android 4.4.4, build 23.0.1.A.0.167). Sony support said "reset the entire phone", of course.
Please share any thoughts you may have about what could be wrong.
Any input is very much appreciated. Thank you!
mail_e36 said:
Hello,
I have the Sony Z2 on Tmobile USA, completely stock (no ROMs, or modifications).
Approximately twice a day, my Z2 randomly stops receiving calls, making calls, and accessing the mobile internet. It still shows plenty of "bars" on the reception meter, thus I have no idea that I'm not receiving calls.
When it happens, this can only be resolved with a restart, or turning on Airplane Mode, then turning it off again. The problem will usually come back within 6 hours, requiring another restart cycle.
If I have WiFi enabled when this is occurring, then I can still access the internet via WiFi, but I will not get calls and text messages. I get no indication anything is wrong, until I try to place a call and it fails.
When this happens, the "Signal Strength" meter (under "About Phone", "Status") does not change, it would read something like -95 dBm no matter where I would take the phone (even in areas of poor coverage). It appears the phone simply looses synchronization with the mobile network, but doesn't notify the user. Other phones on the same mobile carrier continue to work perfectly at the same place, so it's not a mobile carrier issue.
I've had this phone for 8 months, and this is a new phenomenon.
This is Z2 model D6503 and I am on the latest firmware (Android 4.4.4, build 23.0.1.A.0.167). Sony support said "reset the entire phone", of course.
Please share any thoughts you may have about what could be wrong.
Any input is very much appreciated. Thank you!
Click to expand...
Click to collapse
Most probably random software issue. If you installed any apps recently one of them could be the culprit. Uninstall them or trying booting into safe mode and see if the problem persists with continued usage.
As a last resort you can factory reset the device using the PC companion. But since the lollipop update is round the corner wait for it and see if the update fixes the bug.
If a factory rest or firmware flash doesn't solve the problem its a hardware fault, return it and ask for replacement.
I know I randomly get data drops, but I always cycle mobile data off and on to fix it. Next time it happens, I'll try to make a call to see if this is the same bug that I've having.
Quick update:
Right before the problem started, I installed the current-as-of February 2015 version of Audible on my phone.
After I uninstalled Audible, the issue appears to have disappeared (haven't seen it re-occur yet). Bizarre, but that's the situation,
I have a stock t-mobile s7 edge device. It's losing the mobile network. I've noticed it a couple of months ago - it happened a few times but recently the problem is getting worse. It already happened 3 times this week.
Seems like completely random. Sometimes I notice it after I go somewhere with weak signal or no signal at all. Sometimes when I get back to an area with good signal it reconnects and sometimes it doesn't. Sometimes it shows the bars and says it's connected to t-mobile but 4g doesn't show up at all. So you can call but no internet. Sometimes no signal at all.
When it happens the only way to connect is to reboot the phone. Nothing else helps. If you try to connect to network manually - it can find t-mobile but unable to connect. just spins. Changing from lte to 3g or 2g also doesn't work.
I even tried to create a new APN - same thing.
Please heeeeelp...........
Last time this happened to me on another device, it was the sim card that had a problem. Have you tried with another SIM card?
No, but I don't believe it's a sim card related problem. Wife's phone has the same problem although less frequently. But she also travels less.
It looks like a configuration / firmware or maybe hardware issue to me.
I'm experiencing the same issue. It seems to happen when the phone loses signal completely like when deep inside a building. Then it won't reconnect to data or the network by itself.
From the first moment when I got my edge back in April I noticed that the radio performance was weaker than other phones. Then I got the Note 7 and same issue again. Then back to an s7 edge and the problem seems to be worse on this one specially after the latest software update.
Sent from my SM-G935T using XDA-Developers mobile app
My wife (s7) and me (s7 edge), as well as a co-worker (s7) are having this same issue.
Before it was happening occasionally, but after the last update its happening WAY more often.
Wiping cache seems to help with frequency, but still did not eliminate the problem. Hopefully it gets fixed with an update. I'm not sure how much longer I'll be able to put up with it.
Edit: I forgot to add a "simple" fix I've found that works almost all the time is to turn off mobile data, turn on airplane mode, turn off airplane mode, wait for signal, then turn on mobile data. Those steps in that exact order work for me most of the time.
So I've been having the same issues as everyone stated. The only fix is to reboot the phone, but who wants to that every time. I even changed the sim card!! I wish T-Mobile would get out of their feelings and start selling more flagship phones.
I have made the decision to jump to LG V20. I hope this issue doesn't exist with the LG.
I've just got my s7 edge and I'm sort of having same problem at home got 2 bars and sometimes goes to 4 bars but also wen I called someone the line was crackling but person said could her me fine so done a wiped cache and think it's sorted it now for the time being
(Edit ~ it's done it again could hardly hear person I was talking to)
Sent from my SM-G935F using XDA-Developers mobile app