[Q] Tilapia 3g problem - Nexus 7 Q&A, Help & Troubleshooting

Hi all,
Been having some problems recently on my wife's Nexus 3g (tilapia). She had it for about six weeks now, I rooted it and installed PA on it (same as my grouper).
Everything was working fine until recently, 3g stopped working for no reason that I have been able to figure out.
What I've tried and noticed so far:
Clean install (full wipe) of PA, and also tried different custom roms - 3g not working
Tried the simcard from my phone to rule out network errors (since I'm on a different network) - still not working
In notification window, 3g coverage bar shows blue when wifi is on, asa it's turned off, a little H appears next to 3g bar, which straight away goes grey and stays that way until wifi is turned back on (this is all in range of wifi network, 3g icon does the same thing if i move far enough to lose wifi access). Strangely enough the carrier (Telstra) shows on my lockscreen, but any attempts to use the connection, like playstore, browser, go sms, all return a no connection error. Also when wifi is off and 3g icon is greyed out, the device sometimes crashes (hardlock) when trying to unlock the lockscreen (maybe unrelated).
Flashed back to stock following these instructions: http://forum.xda-developers.com/showpost.php?p=32075129&postcount=1 - problem still remains
APN settings have been tried on both auto and manual, no luck.
At this stage I'm starting to think this may be a hardware issue with the 3g modem and thinking of just returning the unit altogether.
Has anyone had anything similar happen?
EDIT I've returned it on warranty

Related

[Q] No more data connection

Hey. I have an HTC Magic (32A) from Rogers. I followed the guide on the CM wiki for rooting my phone and installing CM 6.1.0. The installation and such went without a hitch; it's working fine, except my data connection no longer works. WiFi works perfectly fine, though. It's just a shame because I'm now paying for a data plan that I can't use.
I read around here that it's usually an issue with the APN info, but I triple-checked it and it seems all fine and dandy. The "Data connection" option is also checked, as it should be.
The only thing I can think of at this point is the ridiculous 911 debacle, but the Rogers waiver form for reactivating data says my IMEI is invalid -- this seems like a very common issue, but I'm a bit weary of calling tech support since I have a rooted phone.
If it's even possible at this point, I wouldn't mind even reverting back to my stock 2.1 state, except I didn't make any backups with nandroid first. Any help would be appreciated. Here's my version stuff:
HBOOT-1.33.2010
RADIO-3.22.20.17
Have you tried popping your sim card into another 3G capable phone, and see if it can manage any 3G traffic?
If so, then it is not a provider / data enable issue, but rather a phone issue.
If you installed CM, then your APN should have been set automatically (CM comes with a big list). If you messed with the APN and saved it, you might wanna check it a 4th time
Have you tried the 2g/3g toggle button in the power widget that comes with CM?
Have you tried the settings of the power widget that comes with CM, where you can configure the toggle options for 2g/3g?
Do you even have normal "g" (GPRS)?
Do you live in a concrete underground bunker? Have you got good enough signal for data traffic?
Data service enable from your network provider is usually to the SIM, and not to the phone (where you IMEI resides).
I think if they block the phone based on IMEI (or don't recognize your IMEI), then you will have no connectivity (both data and voice/txt).
Thanks for the reply!
I tried putting the SIM card into another phone just now (a Nexus One, unrooted, stock ROM), and it's the same thing: voice/text works but no data.
I've had no luck with the APN list from CM. I tried another list I found on the internet somewhere but that didn't work either. I've since reset it back to the CM default.
Tried the 2G/3G toggling, didn't work.
I've never even seen the data icon that shows 3G or regular G. Is there a better way to check if I have a GPRS connection?
I've tried it at multiple altitudes. Right now I'm sitting in an office and I've got all four bars on my signal.
My uncle happens to work for Rogers; I asked him about it and he said he'll send me a list of instructions on what to do, in case the problem is indeed on Rogers' end. If it works then I'll post it here for y'all.

[PROBLEM] No signal with HSDPA activated

Hey,
so today I noticed my N4 couldn't get any telephone signal whatsoever. At first I thought the provider was just having issues but when I came home and tested my other phone it worked fine, so it's an issue with my N4.
Did a factory reset, problem remained. Then I tried activating 2G only and all of sudden the signal was back, telephone and data on 2G and everything works fine.
As soon as I uncheck 2G only however, both signals are gone and here's the kicker: even when wifi is activated and connected I get no signal. (with 2G+wifi I do however)
Had faux' kernel installed on stock deodexed, wen't back to stock kernel for now, didn't change anything else lately, problem just randomly appeared.
EDIT: nevermind, I just realized I checked 2G only on the other phone as well and forgot about it. Same problem there. Has to be a provider issue.

[Q] Mobile data issue

Hey!
I have found a really weird issue since (officially) updating to lollipop (N910C, BOC3). Initially, mobile data worked fine, but after a day or two I noticed, that after going off of wifi, I only got edge connection. I rechecked the settings, restarted the phone but the phone just doesn't go past edge (to 3g or hsdpa; no lte yet for me).
So I then chose to hard reset my phone, wipe cache and reinstall everything. At first, everything went fine and I had H+ connection, no problem. I tried to enable/disable wifi and mobile data a couple of times, but all seemed fine. Today (after 1 day), I noticed again that mobile data is stuck on EDGE.
As far as I remember, everything worked fine on 4.4.4. I even rechecked my sim and settings on my old XperiaZ, where H+ works normally.
Any ideas?
Best regards and ty.
Update: After messing around, I found that by setting the network to wcdma only, allowed the phone to connect to 3g. This means that when left on automatic network mode, the phone choses 2g network and won't switch to 3g even if it is available... Do you guys know a setting where you can tell it to preferentially chose 3g, while on the auto network mode? P.S. I don't have any battery saving options turned on...
Bump... No one knows how to set preferred connection type?
Are you in a room when you are testing? Have you tried to go outside, and while you are connected to edge or H/H+ , open up your internet browser and go to a website and watch your connection if it changes to LTE or 4G...
There is an app that can do what you are asking but you have to root your device in order for it to work... I can't remeber what it's called and I know someone will chime in...
Zigurat said:
Hey!
I have found a really weird issue since (officially) updating to lollipop (N910C, BOC3). Initially, mobile data worked fine, but after a day or two I noticed, that after going off of wifi, I only got edge connection. I rechecked the settings, restarted the phone but the phone just doesn't go past edge (to 3g or hsdpa; no lte yet for me).
So I then chose to hard reset my phone, wipe cache and reinstall everything. At first, everything went fine and I had H+ connection, no problem. I tried to enable/disable wifi and mobile data a couple of times, but all seemed fine. Today (after 1 day), I noticed again that mobile data is stuck on EDGE.
As far as I remember, everything worked fine on 4.4.4. I even rechecked my sim and settings on my old XperiaZ, where H+ works normally.
Any ideas?
Best regards and ty.
Update: After messing around, I found that by setting the network to wcdma only, allowed the phone to connect to 3g. This means that when left on automatic network mode, the phone choses 2g network and won't switch to 3g even if it is available... Do you guys know a setting where you can tell it to preferentially chose 3g, while on the auto network mode? P.S. I don't have any battery saving options turned on...
Click to expand...
Click to collapse
hi ,
one option is if you are rooted is ,( see/read thread )
[APP][5.0+][ROOT] Toggle Network Type 5.0 (2G, 3G, LTE) by dev @cygery
http://forum.xda-developers.com/android/apps-games/widget-toggle-network-type-5-0-xda-t2945406
i have N910F ,rooted on Lollipop BOC3 app works 100% smooth ,no problems ( very impress with app )
good luck
willcor said:
hi ,
one option is if you are rooted is ,( see/read thread )
[APP][5.0+][ROOT] Toggle Network Type 5.0 (2G, 3G, LTE) by dev @cygery
http://forum.xda-developers.com/android/apps-games/widget-toggle-network-type-5-0-xda-t2945406
i have N910F ,rooted on Lollipop BOC3 app works 100% smooth ,no problems ( very impress with app )
good luck
Click to expand...
Click to collapse
Thanks for your suggestion. I am not rooted yet and will try to keep it that way for a little while yet... will see how long i'll last xD
Manual mode will have to suffice for now, seeing as rooting is the only option. Might be a carrier setting related problem =/
Ty

Mobile Radio 2G issue

Hello everyone, I'm experiencing a terrible situation with my OPT - O2 2.1.2.
I used to rely on Intelli3G (an Xposed module that switches mobile radio to 2G when screen is off to save battery and then reverts back to LTE on screen on).
This worked perfectly with OPO but I noticed strange disconnections of the mobile data with no possibility to switch on again without rebooting.
I've studied what happens when the phone is asked to switch to 2G Only:
with the *#*#4636#*#* menu I noticed that the network type says "unknown,unknown" and there's nothing I can do to get things working again until a reboot.
In this situation I see that there's signal, triangle is full, but I'm unreachable.
If I keep my radio to WCDMA preferred (with screen off) or LTE/GSM (while using the phone) everything works fine (so far).
My carrier is Vodafone IT, I already changed my SIM card for I thought I had a faulty one.
Anyone else is experiencing these disconnections?
MetalSinger said:
Hello everyone, I'm experiencing a terrible situation with my OPT - O2 2.1.2.
I used to rely on Intelli3G (an Xposed module that switches mobile radio to 2G when screen is off to save battery and then reverts back to LTE on screen on).
This worked perfectly with OPO but I noticed strange disconnections of the mobile data with no possibility to switch on again without rebooting.
I've studied what happens when the phone is asked to switch to 2G Only:
with the *#*#4636#*#* menu I noticed that the network type says "unknown,unknown" and there's nothing I can do to get things working again until a reboot.
In this situation I see that there's signal, triangle is full, but I'm unreachable.
If I keep my radio to WCDMA preferred (with screen off) or LTE/GSM (while using the phone) everything works fine (so far).
My carrier is Vodafone IT, I already changed my SIM card for I thought I had a faulty one.
Anyone else is experiencing these disconnections?
Click to expand...
Click to collapse
I'm having similar issues. I can only connect with one SIM at a time. One SIM card only connects via 2G. I think I need to go buy a new phone. I've even restored back to old versions without luck. I've flashed the modem too. No luck. This is bad for someone on the road like me. I'm missing critical calls. I'm back to using two phones as a work around.

Roaming on VZW after CM13

When I first started using CM13 my signal went to roaming when I know I should have service. I have data roaming off and I've checked to make sure I'm not getting charged for roaming and I'm not. My phone works as it should and I can do everything I need still so I was hoping it would be fixed in one of the new updates. I am on the newest nightly build as of this morning and the R above my signal is still there, just wondering if anyone else is having this problem or know the cause?
I have the same issue on my Nexus 6
Same issue here. Nexus 6 Verizon, just switched to CM13 and I'm stuck on roaming - so far I've tried airplane mode for a minute or two, turning the data off and on, turning the phone off and on, and chatting with Verizon support in case they could do anything remotely. The one thing I haven't done though is try putting another sim card into my phone to see if I could divine any information that way.
Any help would be appreciated.
So after trying just about everything I decided to cave in and jump back to CM12. It was there that I noticed a key difference:
CM12's settings -> mobile network settings, has the following sub-options:
Data Roaming on/off
Preferred Network Type
Enhanced 4G LTE Mode on/off
System select
Access Point Names
CM13 (nightly #2) only has:
Data Roaming
Preferred Network Type
System Select
...while in all honesty I don't know what it all means except to say that it appears to be missing some features of the CM12 nightly I'm using on my Nexus 6 on Verizon. I guess I'll try back in a week or three to see if everything is working fine.
For whatever reason I had LTE pop up for like 2 seconds but went back to R and has stayed since..

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