Problem when network switching from 4G to 3G - ZenFone 2 Q&A, Help & Troubleshooting

Hey guys.
I'm getting a problem with both stock and the new CM build, when network is swapping between 3G (HSDPA) and 4G... I am in UK and I drive for a living so it happens a lot.
When it swaps sometimes I don't receive calls and texts for up to 2 hours. I've been blaming the network Three but I'm not sure now. I only seem to get the problem when the network is doing the swap. I receive the texts eventually in like a bulk.
I've tried all the usual settings (APN, factory reset, divert settings) and had like a daily phoncall to Three to try and get it sorted on their end.
It let's me send texts and make calls when problem is happening, but receiving them is a different matter...
Tried searching all over the internet but to no avail.
Was just wondering if anyone else is getting the problem? I can force the problem by switching to 3G in settings, or making a call to any number while being on 4G then quickly tabbing and sending a text whilst on a call.
Cheers!

This issue is really frustrating.
I have switched off 4g completely and that seems to have resolved the issue.

No idea anyone? I've not got another 4g phone to test this issue in...

This sounds like you may not have strong 4G signal. Have you tried contacting your service provider to confirm? Have you tested with a different SIM card? Last step to try is performing a hardware reset including cache wipe partition - http://www.asus.com/us/support/FAQ/1011956/
Sincerely
ASUS_USA

Normally full 4G signal. Still in contact with Three about it to try and get something sorted to no avail. Was fine with EE (although I was only with them a little while). Had a simcard swap from Three, same issue.
I did a full reset when I installed CyanogenMod 12.1 , and again to test with original firmware...

Related

No signal, T-mobile, WCDMA

So i rooted my phone over a week ago, and tried out many different roms. Everything was going fine, until i noticed yesterday that i kept losing voice and data connection. I tried updating to the latest radio which was out today 5.09.00.20, but still have the issue.
The only workaround i've found so far is to set the network mode to GSM only. But obviously it's not very practical for a phone like the desire. When i have it on GSM/WCDMA Auto, it keeps voice and data on for about a minute, then i lose it. And when it's on, i still can't make any calls. But i can make and receive calls fine on GSM only.
Anybody have a clue what's going on here? I tried calling T-Mobile, but they were as useless as always. Apparently there was an issue on the 29th, which is now resolved, and they refreshed something on my profile. So i dunno if rooting/flashing my Desire has caused this or if it's some network outage.
I'm currently running the latest DeFrost rom. I've tried SenseFroyo (Opendesire), LeeDroid & i'm now running the official 2.2 sense rom.
I've also been having problems when connected via 3G for the past few days, but only when I'm at home (so I think it's a specific cell). The signal indicator shows a good signal but attempting to use the internet over 3G just times out, and my voice calls keep getting dropped.
Like you I can work around the problems by switching to GSM only.
I think it might not be a problem with my phone though, because I've tried putting my SIM card in my Nokia N95 and the internet doesn't work over 3G on that either (internet works using GSM on N95). I did manage to make a call on my N95 when my Desire was dropping both incoming and outgoing calls within seconds though.
Weird! I'm going to give it a few days and report it to T-Mobile if it's still happening.
It's fixed for me now. I guess it was a network outage

[Q] Help! Phone loosing signal

My phone has suddenly developed a mind of its own. It has a lag and is dropping signal anytime i am in an area that has HSDPA. When it does that i can neither recieve or make calls, sometimes i can make calls to other networks but not mine, it works fine when the network is EDGE or GPRS. I have called my network and they have confirmed that the problem is not fom them. Tried my sim on other phones and it works ok. I have done a reset twice with no change. No recent installs of softwares, no impact, nothing at all. This is becoming frustrating!!! Can anyone help please cos i love this phone, its my[I]![/I]

Text/call problems on 3g only

Hi,
Does anyone have any ideas on a specific problem I have with the One X (on t-mobile - sim only contract in UK)
Had the phone since it first came out and the last 6 weeks I've been unable to send or receive texts while the phone is in 3g (wcdma mode or wcdma/gsm auto). The only way I can receive/send texts and calls is in gsm mode. I've been on the phone with T-Mobile for over an hour making sure my service centre number and network operator is correct and I have no signal issues (mostly full signal).
I've tried turning the wi-fi off to see if that's an issue but it makes no difference. What's weird is that in 3g (wcdma) mode I have no problems with data, so I can use the internet/facebook/twitter apps and upload/download pics and files just fine.
The engineer at T-Mobile (android dept) told me there's a 3g and 2g antenna in the phone and the 3g antenna may be faulty. Sounds plausible but wouldn't that mean no data connection on 3g too? I've also been told to check my micro sim in another phone, which I'll do when a friend comes round (I don't have any other phone that uses micro sims).
I just thought I'd check in here to see if this is a known issue. I've googled and nothing's turned up with this particular problem. Normally it isn't an issue as I use wi-fi for data so just keep the phone in gsm mode. However, when I'm out I swap to 3g sometimes and forget to swap back. I had two days worth of missed calls and texts when I forgot to switch back this weekend :laugh:
In summary:
gsm mode = texts, calls and internet all working fine (though slow data connection, obviously)
wcdma = no texts or calls but internet fast and working fine.
Any ideas, help or advice would be appreciated. I don't want T-Mobile saying it's a phone problem and HTC telling me it's the network's problem.
The same problem here using a WWE model (no carrier) in Vivo Mobile (Brasil).
No solution until know...
TheReplicant07 said:
Hi,
Does anyone have any ideas on a specific problem I have with the One X (on t-mobile - sim only contract in UK)
Had the phone since it first came out and the last 6 weeks I've been unable to send or receive texts while the phone is in 3g (wcdma mode or wcdma/gsm auto). The only way I can receive/send texts and calls is in gsm mode. I've been on the phone with T-Mobile for over an hour making sure my service centre number and network operator is correct and I have no signal issues (mostly full signal).
I've tried turning the wi-fi off to see if that's an issue but it makes no difference. What's weird is that in 3g (wcdma) mode I have no problems with data, so I can use the internet/facebook/twitter apps and upload/download pics and files just fine.
The engineer at T-Mobile (android dept) told me there's a 3g and 2g antenna in the phone and the 3g antenna may be faulty. Sounds plausible but wouldn't that mean no data connection on 3g too? I've also been told to check my micro sim in another phone, which I'll do when a friend comes round (I don't have any other phone that uses micro sims).
I just thought I'd check in here to see if this is a known issue. I've googled and nothing's turned up with this particular problem. Normally it isn't an issue as I use wi-fi for data so just keep the phone in gsm mode. However, when I'm out I swap to 3g sometimes and forget to swap back. I had two days worth of missed calls and texts when I forgot to switch back this weekend :laugh:
In summary:
gsm mode = texts, calls and internet all working fine (though slow data connection, obviously)
wcdma = no texts or calls but internet fast and working fine.
Any ideas, help or advice would be appreciated. I don't want T-Mobile saying it's a phone problem and HTC telling me it's the network's problem.
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Click to collapse

[Q] Help with understanding logcat (dropping calls)

I have a strange issue with my HOX and i wonder if anyone can read something about that from my log. I've been having call dropping issue for a while now (seems to be on aosp only... sense roms work great). If i start a call and have data enabled I sometimes get an issue with signal dropping (No service). I never have that issue with data disabled. If i'm connected to a wifi network i don't have that issue. The issue is only there if I have data enabled and not connected to wifi network (either wifi off or out of range). I've been tring to understand what the problem is but I've had no luck (been searching for a solution for about a week... tried different settings... like "wcdma only" but the problem is still there)
The problem doesn't always arise but still pretty often... It happens often on some roms and not very often on other roms (I've only had this issue twice on cm11 but get it almost every other call on SlimKat). I've attached a logcat from SlimKat while outgoing call dropps signal. Hope any of you can shed a light on my issue. I looks like a hardware problem but i don't understand why it works on sense roms.
Edit: I first had this issue after I OTA'd to 4.18.401.2 (with new hboot 1.72). It's a shame HTC denies us s-off. Otherwise i would just go back to hboot 1.39 but i'm hoping i can somehow fix this because I really love AOSP roms and i really don't like Sense.
Edit2: This only happens on outgoing calls. Never on incoming calls.
Edit3:Took out the sim card. Polished it a bit. Put sim card back. Now in 10 test calls i never had signal dropping. I cut the sim card myself and now i guess it's time to go and get a proper microsim.
Edit4:Still had a signal drop on outgoing call.
Will report back after i get a new sim...
I tested the HOX with another sim card from another carrier. No problems whatsoever. I tried my sim card in an iPhone 4 and it worked without any issues. As soon as I put my sim card back in my hox and place a call I get "out of service" (with data active and wifi disabled). I just don't understand. Everything works great with data off or if I'm connected to a wifi. I really don't want to change my carrier (it's just so cheap )
BTW the sim card is not very old. Maybe a year max (although i did cut it to size myself but I've done that dozens of times for myself and my friends and have had no issues)
Anybody got any ideas? (haven't tested with different sim card from my carrier.. will test as soon i get a chance)

Mobile Data stops working

Hello,
I live in an area (like many of us) there T-mobile service isn't that great. I daily drive through areas with zero service and I have almost no service at my house so we utilize WIFI Calling.
I have been finding for the past few months that when I return to an area of good service (phone showing full bars of 4G or 4G LTE) that I cannot move any cellular data. If I reboot the phone then everything works again for a while. I have tried to toggle into airplane mode and back but this does not help, only a full reboot helps.
Does anyone else get this? Its very annoying to have to reboot the phone when I need to use cellular data. Appreciate some input. Phone is NOT rooted and running the latest available software from T-mobile
M
madas said:
Hello,
I live in an area (like many of us) there T-mobile service isn't that great. I daily drive through areas with zero service and I have almost no service at my house so we utilize WIFI Calling.
I have been finding for the past few months that when I return to an area of good service (phone showing full bars of 4G or 4G LTE) that I cannot move any cellular data. If I reboot the phone then everything works again for a while. I have tried to toggle into airplane mode and back but this does not help, only a full reboot helps.
Does anyone else get this? Its very annoying to have to reboot the phone when I need to use cellular data. Appreciate some input. Phone is NOT rooted and running the latest available software from T-mobile
M
Click to expand...
Click to collapse
It happens all the time for me. I've not been able to figure out why it happens, but I've seen some speculation in other threads where people think it can break when switching between H+, 4G, LTE, etc. Some people have reported that switching to airplane mode and back fixes it, but it doesn't work for me. Only a reboot will fix it for me.
Here is another thread with some discussion on it:
http://forum.xda-developers.com/galaxy-s6-edge/help/mobile-network-data-connection-drops-t3097605
Thanks for the response. I'm not happy to hear it appears to be happening to everyone. I wonder if any of the carriers have reported this to Samsung?
I cleared the cache partition on my phone 2 days ago and I've been good since...that doesn't mean it fixed it but its been a while since I had 2 good days!
THIS HAPPENS TO ME OMG!!! I thought I was going crazy... it happens quite often in NYC where we travel by subway underground... Switching to Airplane mode then back indeed fix it majority of the time, but it doesn't work sometimes...
Also, this happens when i am on Wifi for extended period of time, and then leave WiFi, the phone will show 4G LTE but wont' push any data.
Going into Phone status will show that you have no IP Address...
edit: btw, i've done an exchange with Tmobile, and still happens on the phone, Swapped SIM card as well, doesn't solve the problem. T-Mobile ran diagnosis, and found nothing wrong. I suspect it might be T-Mobile's network configuration...
Also, I can almost 100% reproduce this when I am playing a game that requires periodic connection (like loading acount info), and then playing in the subway while doing data connection between subway station (we have internet at the station, but not in the tunnel) will break my 4G LTE data connection...

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