Develop Bugs

Signal Issue

I purchased the HTX One X last Friday after some low life stole my Xperia S in Norway. So far I like the phone, however I'm have a major problem due to unreliable and intermittent 3G signal. The data speed varies significantly from a good connection to complete drop out over a period of a few seconds both at home and in the office. I also think that the continuous signal drop out is killing the battery life as the phone is continuously searching for a signal. The phone was purchased sim Free and I have a Three sim only contract. .
By comparison my Xperia S (also on three) had a really fast and stable 3G signal. I also did a couple of tests tonight using my old Iphone 4. The Iphone averaged 2460 kbps using the speed test app while the HTC averaged only 542 kbps. It was also noticeable that the Iphone gave consistent results while the HTC was pretty random and often couldn't finish the test.
I'm pretty certain that this is a faulty phone and will try and return it tomorrow for a replacement. however before I take it back I just wanted to check if anyone has had a similar problem and if they found a solution.
At the end of the day I'd prefer to stick with the HTC but if the connection issues cannot be resolved then I may have to go back to the Xperia S

What is your Firmware Version ?

I had the same issue with poor signal o2 uk, with 1.26 software but after upgrading to 1.28 my signal strength improved! try checking for software update and see if that helps!!

software version is 1.28.401.9

I have sw 1.29. Sinne yesterday i have a very Bad signal. I changed my sim i placed the sim in my iphone. Sim and network are working correctly.
Now i have in good network areas only 2 3 signal bars.
Sent from my HTC One X using XDA

I checked now again the hox. I have no 3g signal. Only edge.

exchanged the handset yesterday and the connection speed seems to be much more stable. However I haven't updated the firmware from1.26.401.2 as I'm concerned that the update may have caused problems on the previous phone. If I update and experience the same problems is there a way to change back to the original firmware version?

calls are disconnected after few minutes

hi all,
stock 551ML no root, the calls running on SIM1 (4G) gets disconnected after 5/10 minutes. i suddenly see the radio bars disappearing, i can't hear anymore the called party, and then the call drops. Tried with 2 different carriers on SIM1. The phone is always enabled with 2 SIM's, but on the second one (whatever the carrier is) there's no such problem. I think this phone has large issues when dealing with 2G/3G/4G swap, signal quality on SIM1 is terrible (tested in comparison with wife's iphone6+ with same carrier same location) and often i lose signal on SIM1. Definitely not a work phone in this way. any idea? can a full reset improve the situation?

Please ensure firmware is updated to latest version. Next please try performing a hardware reset including cache wipe partition. http://www.asus.com/us/support/FAQ/1011956/
If the problem continues then it may be a hardware issue with the SIM slot and will require RMA service.
Sincerely
ASUS_USA
[email protected]

after few weeks i can say more about this issue, on SIM1 the 4G slot. (stock phone updated and wiped completely)
1) carrier signal reception has now slightly improved with .59 and .63 update
2) problems on switching from 4G to 3G still there, when 4G signal is poor the phone is not able to detect it, and tries and tries and tries sending data to nowhere. after a minute or so, switch to 3G happens and i got network connectivity again
3) comparison with iphone6+, samsungS5 and sonyZ3 (same network, same location) is still terrible, while i got no network, iphone does and loads the pages, slowly but it loads the full page. i think here is the price difference between the two -> antenna, radio, optimized software for any signal condition
4) under bad (bad from a 551ML point of view) signal conditions the battery drains a lot more faster, and that's fine but at least i would like to use the phone, to receive calls, messages, whatsapp and so on.
5) during a call on SIM1, it still happens that signal disappear and i the call is dropped, less frequently than i had before .59 update, but still happens.
6) i'm calling using SIM2 BTW, SIM2 on 2G has no issues.
i will be soon able to compare with honor7 (it should have a very good optimization on the radio part) and let you know.
bye

I am on AT&T in the US and having a similar problem and hoping someone can help except for me it is SIM 2 that is the problem and for me it is at home. Last night I was on a call that kept dropping, and it was not a good thing at all and I had to end the call. I pretty much cannot sustain SIM 2 calls in my house but SIM 2 elsewhere is okay; calls on SIM 1 are perfectly fine and with my previous phones (Note 3, iPhone, Windows Lumia 1520) no reception problem history ever at all. So this clearly is a device issue and not an AT&T issue as I get good coverage in my house. I had two phones up until a month ago when I opted to consolidate by getting the ZF2.SIM1 is perfectly fine most of the time-I've never dropped a call although a couple times I have to say I've not heard as well for a moment as I could, so I question if my house and the Zenfone2 are a good match, although that is really a weird thing as I live in a major suburban metro area that is not a coverage problem in any way shape or form with any dead spot problems, so I am wondering if something is wrong with my hardware and I need to exchange my phone. I'm going to have to pop my SIM 1 back into my Note 3 in the interim and forward calls on my second line in the interim in the meantime if that's the case . (my windows phone takes a nano SIM) and send my ZF2 back for an exchange Should I do a hard reset? Why would my house be a problem? It's not a dead spot area or remote or anything like that. I really like this phone already got a new SIM 2 card once before when I had problems at first but it seemed to be better until I then tried to make a c all yesterday and it wouldn't work.Could my phone be defective? Hard reset?? My software is up to date.
Sent from my K010 using XDA Free mobile app

After latest updates and various test i can say that signal coverage and battery life has been improved so much. Thanks a lot asus, it's a pleasure to work with this phone now. Keep doing the same good job!

Federic0 said:
After latest updates and various test i can say that signal coverage and battery life has been improved so much. Thanks a lot asus, it's a pleasure to work with this phone now. Keep doing the same good job!
Click to expand...
Click to collapse
Glad to hear things worked out for you. My situation didn't work out. I just returned the Zenfone yesterday. I had gotten the replacement phone through ASUS, still replaced yet another SIM card, and the problem with my SIM 2 persisted and got even worse. For me, the SIM slot being 2G did turn out to be the destructive feature of the device. My area is too upgraded for it apparently. You're the only other person I've come across that has referenced SIM 2 usage to me, so I get the sense that most people are just using the ZF2 as a single SIM and don't have a second phone line or data line. Therefore I can understand people being happy overall as it's a decent device for a single SIM user. You are lucky that your SIM 2 coverage is good everywhere. Mine was good in some areas but certainly not in and around my house and there my SIM 2 was unable to sustain phone calls. I didn't care about data-I only wanted phone calls but I couldn't do calls even.I had no cellular connection and my SIM 2 would X out and drop off all the time.
I never had a problem with SIM 1. I always got calls just fine and I found that ASUS always provided updates and I noticed changes in battery life. I was pleased in every other regard but the very purpose that I bought the phone for -to be able to get calls to both my phone lines. I do think ASUS dropped the ball with the 2G slot and need to make their next model with both slots supporting LTE. They me might get me back as a customer if they do.
Sent from my K010 using XDA Free mobile app

It looks like I am not the only one who has the sim 2 signal issue. My phone has this issue from day one, the signal of sim 2 just comes and goes all the time. Software update doesn't help at all. I've also tried putting a new sim card, but still have the same problem. I think this is a hardware issue.

[Question][X9076]Modem issue

Hi guys, I think I have problem with my modem.
Around 3 months ago I bring my phone to Oppo Service Center because I cannot get 4G connection, I can only get 3G or H+.
The technician said that my 4G antenna is broken, it need to be replaced if I want 4G connection (price more than USD 200), I cancel it, because this phone is my daily driver I cannot let it stayed in the service center.
Then the strange things happen, last week I went to Bangkok, I bought sim card, and I get full 4G connection, but after I came back from my trip and use my sim card, it sill can only get 3G or H+.
My sim card was tested in Huawei and Samsung and it get 4G connection, so I don't think my it is a problem with my sim card too.
I'm from Indonesia, btw.
Need advice from you:
1. Have any of you experience this before?
2. Do you have recommendation for modem version that I can try?
I'm running official (rooted) ColorOS 2.1.5i with TWRP and SU installed.

UK: S10+ Discussion

Discuss all things S10+ related, for those who are in the UK.

Okay, so I got the phone yesterday on O2 contract, but having signal issues. I'm barely getting any signal, from 0-1 bar.
I had tested the phone with another sim (EE) and I get 3 bars, which is still poor, as I usually full bars on all networks in my area. Network coverage is perfect and no known issues in my area, as confirmed by O2 technician themselves.
I spoke with O2 CS and technician and went through all troubleshooting steps, resetting network settings, trying different Sims on different phones etc, but no go and was eventually told to RMA it.
Phone is up to date with the latest day one update. Could it be a software issue (O2 firmware?) or device issue? I have a hutch that it is a hardware issue and I got the bad batch, having been a early adopter.
Just wondering if, anyone else is having the same issues?

Hi I got my unlocked S10+ yesterday and am also on O2 with no signal problems whatsoever.
Sounds like a device issue to me, hope it gets resolved quickly.

Deeco7 said:
Okay, so I got the phone yesterday on O2 contract, but having signal issues. I'm barely getting any signal, from 0-1 bar.
I had tested the phone with another sim (EE) and I get 3 bars, which is still poor, as I usually full bars on all networks in my area. Network coverage is perfect and no known issues in my area, as confirmed by O2 technician themselves.
I spoke with O2 CS and technician and went through all troubleshooting steps, resetting network settings, trying different Sims on different phones etc, but no go and was eventually told to RMA it.
Phone is up to date with the latest day one update. Could it be a software issue (O2 firmware?) or device issue? I have a hutch that it is a hardware issue and I got the bad batch, having been a early adopter.
Just wondering if, anyone else is having the same issues?
Click to expand...
Click to collapse
I'm on virgin (ee) have 2 sims running (both virgin) and indoors on both sims 1 bar each only, haven't really left the house since getting phone yesterday (crappy weather) so will test today outside and if go out and about I live in rural town but normally get at least 3 bars inside so it's a little worrying
Sent from my SM-G975F using Tapatalk

Thread closed at OP request

N920I - Weak 4G. Can no longer make or recieve calls. Possibly a local 3G tower was turned off.

My Galaxy Note 5 SM-N920I purchased December of 2015 can no longer make or receieve calls. My provider is TracFone via the Bring Your Own Phone program. I use their SIM card and it has worked all this time. Until recently the phones features have stopped working. I think they have been disabling the 3G in my area, as everyone is converting to 4G now.
Note 5 is supposed to support 4G but it's definitely been having issues. Text and internet still works. however texts are sometimes delayed on occasion, not always, usually it's fine. Data speed just now was tested at 10 mbps down, 3 mbps up. Signal bars are consistently low, regardless of physical location; inside, outside, other side of town, SIM status shows signal always between -108dBm and -118dBm. This is likely why I cannot make or receive calls, but the question is, why is this happening?
Like I said, I suspect they are shutting down 3G in this area, so the best theory I've been able to come up with is this: perhaps 4G has always sucked on this phone but I never noticed because it would fall back to the good 3G connection. Now that 3G is gone in this area, all I have to use is 4G which is a shoddy connection.
Further research has found in the early days of this phone there were numerous reports of weak/no signal. See these threads:
Fed Up With Terrible Reception
Hey all, I'm kind of venting here and at the same time hoping for some sort of direction because I'm absolutely fed up with my S6. I upgraded roughly a month and a half ago from an S4. My phone usage was below normal for the first week or two as I was busy with a variety of projects. As my...
forums.androidcentral.com
No signal/network on my note 5
Hi everyone, so I just got this note 5 N920P last two weeks but I noticed its OS was lollipop...waited for updates for 7.0 but nothing so I went ahead and downloaded Odin with latest firmware from samobile and did it my self, now here the problems start to show first of all this hands free...
forums.androidcentral.com
One theory was that the 4G antenna they used in the Note 5 / S6 was of poor design. Causing weak signal.
Things I have tried and did not work:
-Contacted TracFone. They confirmed the device is supported and provisioned correctly. They recommended a new SIM card.
-Replaced the SIM card with a brand new one
-Factory reset the device. It's running the stock Android 7.0 Nougat which was the last up to date version available.
-Tinkered with various service menus including *#2263# and *#0011#. Messing about with the LTE band settings didn't change the signal strength ever. Regardless of the LTE band, it stays in that -108 to -118 range, too weak for calling.
What can be done to fix this? Possible ideas:
-Internal antenna replacement, but this seems either expensive to have someone do, or extremely difficult to do oneself. Would it even make a difference? Has anyone tried this?
-Software. Could the issue have been introduced during one of the software updates? Planned obsolescence perhaps? Could we revert to an earlier firmware to potentially resolve this? has anyone tried this?
-Firmware. Could we upgrade the firmware to a later, unsupported version safely? Perhaps the issue was fixd in later Android versions but has not been adressed in older devices that are no longer updated.
I'm the kind of person who likes to use my things until they absolutely die. This Note 5 has been perfectly fine until recently. There is nothing wrong with it. It's still modern, fast, and has a great camera. I would HATE to have to replace a phone for such a stupid reason. Not only is money tight, but it's such a waste when this thing is still perfect apart from this weak 4G signal.
Has anyone else had this issue? Have you resolved it? Any help appreciated. Thank you.

Try a network reset.
Clear sim toolkit data.
Clear system cache.
The access point profile may need updating or maybe the sim?
Contact AT&T advanced tech support.