[Q] Data Connection problem - Galaxy Tab 2 Q&A, Help & Troubleshooting

I am having problem with my data connection on my Samsung Galaxy Tab2. I start using the internet connection with no problems then at one point i lose data connection all other serviced work well sms and calls. In order to get my data connection back i either have to restart phone or else go to flight mode and off flight mode again (flight mode thing sometimes works and sometimes doesn't).
Sometimes, it also says "No SIM Card". This complete issue typically happens when I have the 2G internet ON and the phone gets locked automatically. When I unlock it again, I see these issues.
So far, this issue happened only with 2G connection. Now, today, the No Sim Card message came up when I left the Wi-Fi button on and left the phone for a while. :crying:
I have tried selecting "GSM Only" in the network settings. I am using Vodafone IN (Andhra Pradesh, India) network. All other threads on google suggest flight mode and restart but I don't want to restart so many times in a day... This happens everytime and the frequency is increasing.
Is anyone experiencing a similar problem? Any solutions for these?

do one thing bro! backup all your data, contacts. do a factory reset of your device! all the things will work like butter! use titanium backup available on playstore!
:laugh::laugh:

Related

Sudden Disconnection from network?

So out of nowhere, my HTC Sensation no longer connects to the network. I would get roughly around 5 mbps around my house, but just all of a sudden, it stopped working. I tried rebooting the phone, and turning on/off airplane mode, and it just doesn't seem to be working. Anyone have any more tips before I try and factory resetting? Also i think I may be experiencing a bug because every time I open any app, I get a very quick glimpse of the weather instead, and then the app opens up. Thanks
What was your previous phone with t-mobile? If you don't have an "android plan" it seems that T-mobile is blocking you from data.
Check this thread: http://forum.xda-developers.com/showthread.php?t=1128335&highlight=data&page=5
I had the same problem two days ago and had to do a factory reset to solve the problem.
Previous phone was MyTouch 3g, so I'm sure I'm on an android plan
Thanks for the link, I'll check it out
Don't assume it's your phone. It's possible that service in your area is down. If you have another t-mobile phone check to see if it has reception. Next go into settings, wireless&networks, and select mobile networks. Then choose network operators and select automatically. If nothing comes up I would call t-mobile because resetting your phone.

[Q] Mobile data disconnects frequently, does not reconnect on toggling

I'm surprised no one else has faced this problem. Mine and 2 other Explorers I have seen have it.
The mobile data gets disconnected on its own. The 'E' symbol from the network icon goes away. But mobile data is marked as enabled in the settings.
Sometimes, toggling mobile data a couple of times does the trick. Sometimes I have to toggle airplane mode then toggle data. Sometimes even this doesn't work and I have to reboot the phone to get data to work.
This disconnection happens every couple of hours, so it is a real pain.
I am using cm9, I had the problem on stock too and on every ROM I have tried.
I have tried marking the network type to 'GSM only' in the 'Testing' menu (from 'GSM/WCDMA auto') as I read somewhere that this solves the problem. Still no luck.
Any help or suggestions would be appreciated. Thank you.
maynihc said:
I'm surprised no one else has faced this problem. Mine and 2 other Explorers I have seen have it.
The mobile data gets disconnected on its own. The 'E' symbol from the network icon goes away. But mobile data is marked as enabled in the settings.
Sometimes, toggling mobile data a couple of times does the trick. Sometimes I have to toggle airplane mode then toggle data. Sometimes even this doesn't work and I have to reboot the phone to get data to work.
This disconnection happens every couple of hours, so it is a real pain.
I am using cm9, I had the problem on stock too and on every ROM I have tried.
I have tried marking the network type to 'GSM only' in the 'Testing' menu (from 'GSM/WCDMA auto') as I read somewhere that this solves the problem. Still no luck.
Any help or suggestions would be appreciated. Thank you.
Click to expand...
Click to collapse
check if your apn is correct or not,
or try to use another sim card
are you facing this problem when you lock your screen?
nit_in said:
check if your apn is correct or not,
or try to use another sim card
Click to expand...
Click to collapse
I guess my apn is correct, since net does work normally (ie. when I'm able to connect). I have tried two sim cards, and know 2 other people who have the same problem, one of them uses a different operator.
nit_in said:
are you facing this problem when you lock your screen?
Click to expand...
Click to collapse
Not necessarily, sometimes it goes off while I'm browsing etc, and then just won't come back on. And keep data always on is enabled in settings, and I don't use any battery saving app.
Any idea what the problem is?
Which rom you are using now?
Check if you have data connection or not.
Did you try to connect internet using the same sim card with another mobile
If another mobile connects to internet then reflash your ROM or try another ROM
hit thanks if helped
sent from my htc pico
maynihc said:
I'm surprised no one else has faced this problem. Mine and 2 other Explorers I have seen have it.
The mobile data gets disconnected on its own. The 'E' symbol from the network icon goes away. But mobile data is marked as enabled in the settings.
Sometimes, toggling mobile data a couple of times does the trick. Sometimes I have to toggle airplane mode then toggle data. Sometimes even this doesn't work and I have to reboot the phone to get data to work.
This disconnection happens every couple of hours, so it is a real pain.
I am using cm9, I had the problem on stock too and on every ROM I have tried.
I have tried marking the network type to 'GSM only' in the 'Testing' menu (from 'GSM/WCDMA auto') as I read somewhere that this solves the problem. Still no luck.
Any help or suggestions would be appreciated. Thank you.
Click to expand...
Click to collapse
Most probably its the problem from your network operator.. i face same problem everyday with BSNL.. there is nothing much you can do.:crying:
nit_in said:
Which rom you are using now?
Check if you have data connection or not.
Did you try to connect internet using the same sim card with another mobile
/QUOTE]
I am using the unofficial cm9.
I have data connection right now. I have used this same sim with my Nokia phone before I got my Explorer without any issues.
Maybe it IS an operator issue, but then there should be many complaints from India about the same thing right?
Click to expand...
Click to collapse
I am from india and having the same problem.
APN is correct and same sim card mobile data is working fine in other phone. Also, in the time of connection establishment and disconnection I cant receive or send any call
hmm
rdagar said:
I am from india and having the same problem.
APN is correct and same sim card mobile data is working fine in other phone. Also, in the time of connection establishment and disconnection I cant receive or send any call
Click to expand...
Click to collapse
whenever i flash new rom
data wrks fine
bt persinally i hv seen that wen i install twitter
it behaves like ur prob n dsnt mtter if i uninstall it
it kps on dscnncting randomly until i flash new rom
it's a network problem, I had the same issue once so I called the network service centre & they told me that they were upgrading the system & recommended me to use the data plan after few hours.. so after few hours I called again & they confirmed that the problem was solved..after that till now I have no disconnection issues.
With BSNL sim card, I have helped so many friends connect to internet properly by creating an APN "bsnlnet". By default HTC and all use the old APN (gprssouth.cellone.in). That connects for a while and disconnects.
And Nokia phones automatically receive a configuration setting message from BSNL but Android doesn't.
Sent from my HTC Explorer A310e using Tapatalk
provider
maynihc said:
I'm surprised no one else has faced this problem. Mine and 2 other Explorers I have seen have it.
The mobile data gets disconnected on its own. The 'E' symbol from the network icon goes away. But mobile data is marked as enabled in the settings.
Sometimes, toggling mobile data a couple of times does the trick. Sometimes I have to toggle airplane mode then toggle data. Sometimes even this doesn't work and I have to reboot the phone to get data to work.
This disconnection happens every couple of hours, so it is a real pain.
I am using cm9, I had the problem on stock too and on every ROM I have tried.
I have tried marking the network type to 'GSM only' in the 'Testing' menu (from 'GSM/WCDMA auto') as I read somewhere that this solves the problem. Still no luck.
Any help or suggestions would be appreciated. Thank you.
Click to expand...
Click to collapse
I've used cm9, cm10, cm10.1, aosp, aokp, jaggy, cm10.2 weekly. It's the same with my TATA DOCOMO sim. I ported to vodafone and with the correctly configured apn settings, its working great. It's definitely a provider problem and has been for the last 2 years.

Nexus 5 WiFi Crashing Phone

Hi all. I have a weird issue that after Googling it doesn't seem anyone else has had.
The issue started earlier today, in the morning. I was using my phone on the WiFi and it was working phone, then my phone crashed, restarted itself.
I noticed it wasn't connected to the WiFi, went to the WiFi settings and where it usually says the list of networks it said "Turning on WiFi" and the slider at the top was greyed out so I couldn't turn it off.
I tried airplane mode and that didn't help. But the phone was working fine on my mobile data so restarted.
Now the weirder part starts. I basically have an issue where, if I turn on the WiFi, my phone crashes, or doesn't act like it's turning the WiFi on.
Even going Settings and then pressing on the WiFi option freezes the phone.
The problem started when I was still using 4.4.4 however since the problem developed I've used my mobile data to download the updates and now have 5.1.1 I think.
The problem persists even after updating to the most recent version and doing a factory restore. The phone is currently completely stock with nothing downloaded on to it. All I did is go through the first time setup for the device.
The WiFi currently is off, and the phone is working however it won't connect to my data, it has the signal bars and then an ! instead of a 4G icon.
If I try to turn the WiFi on it crashes the phone.
The phone is still under warranty so I plan on contacting LG on Monday however it's currently 3:34 AM on a Sunday so I have a day until I can call them and was hoping for a solution in that time.
Thanks in advance. I have the phone to hand so anything you want me to test I'm able to.
There is some information I didn't type as I don't know what is important was trying to avoid a wall of text so if you have any more questions I'll answer I best I can.
Thanks for reading, I hope you can help!

LG G5 Sim not detected only for SMS and calls

As stated I'm using the LG G5 H830 T-Mobile variant. I am getting 4G LTE data connection and everything runs well (Not in any WiFi range) Yet for SMS and calling as well as mobile hotspot I get "No USIM card' error. This happened after wiping the system and formatting data. Rebooted recovery (as per instructions on forum) then installed the stock firmware & Patch with systemless root and xposed. After this I did factor reset when just pulling the sim didn't help. Still nothing. I reflashed just the stock firmware with TWRP and SuperSU and issue is still happening. I've disabled rebooted and enabled the phone radio. SIM is in good condition and tray as well everything is SECURE and should be good to go.
I'm assuming a new SIM might be a solution. But I'm not counting on it and with Labor Day tomorrow for me I wouldn't be able to pick one up for 2 days. So here I am...hoping someone might have a fix. I know I don't have many posts on here. But I am an experienced user....just not with the more basic of problems I guess
Thanks!!
Has anyone else experienced this yet? I'm just curious...I had it fixed for a couple days. I've formatted data and done complete system wipe. Tried it resetting phone with the COMPLETE zip and TOT using LGUP. I'm receiving texts. Not calls. Not able to send either. I've activated new sim, didn't help. LG support just told me to look into warranty. T-Mobile needless to say just wanted. Sim card does show stock tmobile short code contacts but phone number shows as unknown. Hotspot won't work. I've tried setting the phone number to the sim. Nothing.
Anyways. I don't think I messed with anything, even so I've done everything to start the phone from scratch. Going to replace it, just more or less curious at this point and maybe others have had the same issue.
I believe I had the same issue as you and it was driving me crazy. I was constantly wiping data, system, etc but my phone kept giving the message "roaming indicator off" where it should show the name of the carrier. This resulted in me having LTE data and that's it- no 3g, no phone calls, etc. I couldn't even access the mobile network menu.
What ended up causing the issue was the network mode setting under wireless networks. Keep in mind at this point I'm running a patched rom which now gives more options in the network mode menu than the phone came factory with. I have an area at work where I have to switch to 3g, GSM/wcdma preferred network setting, because although I have full LTE signal, my connection goes dead. When switching back from 3g I chose the setting lte/CDMA thinking this would force my phone to stay in lte mode due to another area on an upper floor where the phone will constantly drop lte.
Anyways this resulted in my phone saying roaming indicator unavailable, the inability to make or receive phone calls, and either the mobile networks or network mode menus being grayed out. When stuck in this mode there is no way to put the phone back into the standard "GSM/wcdma/lte" mode. Even a complete reflash won't fix it. I even used lgup, which worked for maybe a day until it force closed the phone app and went back to roaming indicator unavail. I wiped every partition and even reflashed radio firmware. Nothing worked.
What ended up fixing it was using an app called v10 hidden settings which allowed me to access the network mode menu directly and re-choose the lte/wcdma/GSM setting. Incidentally on first access to this menu through the app there are only two network settings available. Once you choose a GSM setting, the rest appear.
I'm not sure if this was your issue but I hoped this helped because this took me about a week to workout.

D6683 - Upgrade to D6633 Marshmallow Firmware - LTE Connection

Hi guys.
Just trying to share my observation and explore if we can do anything.
I am using D6683 (I think it is support to be a HK based handset). Using Lollipop, it has been working perfectly but 16GB not enough hence MM function that allow SD card and Internal memory merge is appreciated.
Since Sony decide to ditch us using D6683, the only option is using D6633.
1. Try using MM .575, it has huge connection problem. The phone will just stay in GPRS mode even connected to a LTE network. Driving from one point to another point, will just cause it to data connection to hang. Putting it in airplane mode and anything else won't work. Only reboot works
2. Restore stock and upgrade to .291, first day testing seem to be ok. Got LTE connection. It did try to swing a bit but it has been maintaining well. This i started driving with Waze. Connection start to go haywire, but it will be still try to reconnect. Data are "maintained" to certain extend. Let the phone along for about 2 days, the next thing I realize, only GPRS left. The signal logo got no more H, H+ or LTE. Check the phone service menu and all info confirm the LTE is available. Again a reboot fix the problem.
3. Change the setting to only WCDMA + GPRS. The phone was "perfect". No data hang issue and etc
Need all the sifu help. Assuming if the phone is rooted, how is the phone determine the connection method? I presume that the phone will initialize the modem to dial the connection. Can anyone share anything that we can probably trigger a redial and probably eventually inject into the phone data connection sequence. Again using Lollipop, there is no issue.
Appreciate any comments/advice.
Regards
Dan

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