I'm new to this forum, so if I've posted this in the wrong place, please move it.
I have an AT&T branded Galaxy SII i727 Skyrocket (4G LTE). It is not unlocked, has not been rooted and runs AT&T firmware. The phone was purchased independent of a contract (eBay). I am a very light user, but I find it convenient to have a data plan and initially used AT&T GoPhone prepaid. Phone and SMS worked properly, but some tweaking was needed to get data to work properly. After a few months, I switched to Consumer Cellular (AT&T MVNO). Initially data did not work, but CC's tech support gave me revised Access Point Name settings and all became as it should be.
Last week (or maybe the week before), I finally gave in to the phone's insistence on updating to a later firmware version. From then on, I have been unable to get data to work at all. the 4G symbol no longer appears (although I doubt it was ever actually a 4G connection) and any App that requires a data connection (web, email, etc) complains about no connection. WiFi, on the other hand, works properly with all such Apps.
Here are the specifics on my phone:
Samsung SGH-I727
Android 4.04
Baseband Version I727UCLI3
Kernel Version:
3.0.8-1127534
[email protected]#1
SMPPREEMPT Thu Sep 27 23:12:45 KST 2012
2012Build number IMM76D.UCLI3
My questions are these:
1. Has anyone had this sort of problem (data on CC fails after upgrade)? If so, how did you solve it?
2. Was this problem caused by the upgrade? If not, what other issues might have caused it and how can they be corrected?
3. How can I revert the firmware to the previous version to confirm the cause and/or resolve it?
4. What else can I do to get my data connection back?
I am not particularly Android savvy, but I am not shy about making changes in settings and/or installing fixes.
Thanks,
Tenaya
I am having the same problem. Same phone set up. I switched from AT&T and installed a Net10 sim on there bring your on phone. Installed been working great. Then it just stopped no data connection. 3g 4g no signal nothing. I have been searching for solution while reading the noobie guides. still looking for someone, a thread, or just a link to where i might start to solve this problem.
Check your apn settings and make sure they are correct for the SIM card. Check with the carrier for the correct settings.
APN settings, I almost guarantee it. Check to make sure they are correct for your carrier
Setting > more > mobile networks > access point names >
yes for anyone else having this issue I had the same issue after flashing a new ROM and this was where the problem was.
Related
Hello Everyone,
I got my first android phone this weekend, a Samsung Galaxy S2 I9100 (not I1900G, or any other variant, just plain old I9100) which was locked to T-mobile UK.
After doing a bit of reading and trying out 3 different methods for rooting, CF-root, insecure kernel, and finally the method described here for rooting stock ICS firmware without flashing an insecure kernel by Rachmat3:
http://forum.xda-developers.com/showthread.php?t=1501719
After rooting method #2 (flash insecure kernel, run S2-root on phone) I ran chainfire's [root] Galaxy S2 SIM Unlock, this didn't work, so I ran Galaxy_S Unlock and it worked. At this stage I could use my phone for calls and sms though my SIM's network provider (virgin), and I later figured out how to get virgin to send me a configuration message to set up the APN settings, and I could then use 3G data to browse the web, etc...
However, I lost root when I flashed a secure kernel, and updated the firmware to XWLP7 from the intratech list of official kernels & firmwares:
http://forum.xda-developers.com/showthread.php?t=1075278
Hence why I used Rachmat3's method #3 to regain root access, which worked like a charm.
However, I then lost the ability to make calls, send SMS and the phone refused to find the virgin network! Disaster! 3G still worked fine for data, and when I tried my sim card in my old phone I could still make calls and it found the virgin network immediately. I tried my gf's virgin sim in the SGS2 and it could find the virgin network but wouldn't connect any calls, it kept saying "unable to connect, try again later".
After reading around, I suspect that this may be a modem problem, can anyone confirm or deny this? I have the modem that came with intratech's XWLP7 firmware, which I believe is XXLPS. Can anyone recommend which modem I should try?
I have a real imei number, I tried flashing the CPW version of the XWLP7 rom instead of the XEU one, no luck, I tried a few other things that I can't remember now as it's first thing in the morning at work!
Any help, suggestions, or direction would be greatly appreciated, I was almost there on my own - fell at the last hurdle!
No-one else has this problem?
I've tried my sim card in it again this evening, I am unable to select virgin or Virgin from the network providers, but all other providers are there, o2, etc...
What's perculiar, is that when I use my gf's sim, both virgin and Virgin and all other providers are present, however, even with this sim, I still cannot make calls, even though it connects to the network, what the heck!?!
I've tried using different modems, no help.
Please anyone, any ideas?
I've contacted virgin this evening, they say the imei code isn't on their blacklist, I can't contact t-mobile until tomorrow, but I will ring them tomorrow and find out if they've blacklisted the imei for some reason.
Help!!
Any ideas, anyone else had similar problems?
Plz help!
I am looking forward to anyone's help about this question!
Hi all,
Just found out that the IMEI has been listed as lost or stolen by t-mobile. In contact with original owner to try and rectify the problem.
Anyone else having this issue, it's likely the same problem, contact the original carrier and ask to check their IMEI blacklist.
On a related note, does this mean that the previous owner of every second hand phone that is sold can just ring up their old provider and blacklist that IMEI whenever they want?
Seems like a bit of a massive oversight if you ask me... Surely there must be a way to transfer ownership of the IMEI number to a new owner?
My father is using Tab2 (P3100). Running Stock OS, Unrooted. 3G Data Connection from Vodafone Delhi India.
since a month or so back he found a update notice and upgraded the Stock Firmware to Latest 4.1.2 using WIFI
Not sure but might be since then, Whenever he's On Roaming, Data Connection Won't work.
Currently He's in U.P. circle it won't connect, Voda has 3G Service here, And I use it everyday at home/city wide.
Tried following:-
1). Checked APN Settings, they are correct.
2). Checked Data Roaming in Mobile Networks.
3). Tried Switching to GSM Only, and WDMA Only, WCDMA/GSM Auto Option, All options same result.
4). Checked wifi is OFF, and Data Connection IS Enabled, using Widgets or APPS but it won't turn on
5). Took out the SIM from Tab2, and Inserted In my Android Phone and 3G/2G Connects Instantly.
6). Put A different SIM which is from my Region but as its not On Roaming, Data Works fine.
7). Checked with operator they have no clue whats wrong in the TAB.
8). Requested Fresh APN Settings from Operator and saved it, But Tab2 won't connect.
Can someone shed some light if this is a BUG in current latest firmware of Tab2 or I am getting and my brain fails to finds a solution.
Any help will be appreciated, don't let me down my fellow members pleaseeeeee
Hello, just thought I would reach out for some help on an issue with my phone.
The Issue: I have a Samsung Galaxy SIII that was sent to me as a replacement for my older phone which had been running CM11 with no issues. I rooted and re-flashed a newer ROM to this device with minor issues (Just had to change the CDMA subscription to RUIM/ SIM). I was able to use the mobile data fine. However, when I went to make a call, I receive a recording saying that I am roaming. I have tried flashing back to the stock ROM, changing the radio to only use CDMA (Not 4G/ LTE), flashing older versions of CM11. None of this has yielded any results. I check the phone status and it says that the device is connected, shows the correct phone number, and also says that I am not roaming.
Any help would be greatly appreciated. Thanks!
Help request: LTE Data works,"no service" otherwise. IMEI/number, but no texts/calls.
Software: Android 5.0.1 Skydragon M8 v2.0 Sense 7
Many people have posted issues with LTE where their cellular signal was fine for "2G" functions like calls and texts.
I'm having the opposite problem. After leaving airplane mode (landing at an airport today), I have a "No Service" message in the status bar drop down (notification tray), and the Settings>Network information page shows "Not Registered." However, I do have an IMEI (see details below). However, LTE data works perfectly fine.
I've obviously tried changing the settings in Settings>Mobile Data (preferred network to Global / LTE / LTE/legacy 3GPP mode) connection type global/auto/LTE/etc), to no avail. If LTE is connected it works flawlessly, but I cannot make calls or texts, and show not registered on the network. Data roaming is set to deny, but even allowing roaming does not change the situation.
Before this happened, I HAD gone through all the XTended Settings, and even 'looked' at (but did NOT change) some advanced settings pages, including the 'hidden' HTC network info page ( *#*#4636#*#* ). Again, however, I didn't change anything -- unless by accident?!
Does this sound familiar to anyone? Anyone know if I may have inadvertently changed something and can change it back (a setting that would persist in the hardware through NANDROID restores and factory resets...). Or, any other advice to restore the cellular service connection to normal?
I've tried a full NANDROID restore (multiple times) to a working copy, and a factory reset. I have limited access to a PC since I'm traveling, so re-flashing the VZW firmware or stock recovery or lollipop/verizon RUU would be challenging.
I did spend a good 45 minutes (at a library, my only PC access!) searching the forums and web, but to no avail.
Settings information:
OPperator Name: Verizon
Signal Strength -114 (I've had better but still have the same issues)
Mobile Network type: LTE
Service state: In service
IMS service state: Not Registered
Roaming: Not Roaming
Phone Identity page:
IMEI shows up (15-digit number...how can I verify I didn't mess this up?)
Phone Number is correct
IP Address: 100.66..... (looks good)
Any help is GREATLY appreciated!
Same here
I'm having the same issue. When i try to make a call my LTE bars drop to nothing and it says call failed no network available. Any ideas or help would be nice. I was using venom rom as well. I'm currently trying to flash the newest RRU to see if that resets things. I'm wondering if it somehow my sim card. I took it from my droid turbo. I've made sure to turn off advanced calling on my VZW account though.
Drhoot said:
I'm having the same issue. When i try to make a call my LTE bars drop to nothing and it says call failed no network available. Any ideas or help would be nice. I was using venom rom as well. I'm currently trying to flash the newest RRU to see if that resets things. I'm wondering if it somehow my sim card. I took it from my droid turbo. I've made sure to turn off advanced calling on my VZW account though.
Click to expand...
Click to collapse
I had this same issue, running from ruu then rooted. I didn't noticed until I started seeing voice mail notifications but never heard the phone ring. When I tried to dial out I got the immediate call lost message. I couldn't figure what was causing it so I just did a reset. I made sure not to restore any systems data from prior to the Lollipop upgrade. At this point everything is working, the only thing I haven't installed yet is the xposed framework and sense 6 toolbox.
mc_365 said:
I had this same issue, running from ruu then rooted. I didn't noticed until I started seeing voice mail notifications but never heard the phone ring. When I tried to dial out I got the immediate call lost message. I couldn't figure what was causing it so I just did a reset. I made sure not to restore any systems data from prior to the Lollipop upgrade. At this point everything is working, the only thing I haven't installed yet is the xposed framework and sense 6 toolbox.
Click to expand...
Click to collapse
What kind of reset did you do? I know my issue is slightly different, but I did a full RUU-flash yesterday (latest lollipop version) and still no luck. Unfortunately I'm out of the country now and access to a computer is limited, and I don't even have a SIM card yet to check if cellular service would work anyway.
I do intend to do a flash of the stock recovery and radios once I have the time and access, but that may be a while...
Still, I'll keep checking this thread to see if anyone posts any other options
lifebringer123 said:
What kind of reset did you do? I know my issue is slightly different, but I did a full RUU-flash yesterday (latest lollipop version) and still no luck. Unfortunately I'm out of the country now and access to a computer is limited, and I don't even have a SIM card yet to check if cellular service would work anyway.
I do intend to do a flash of the stock recovery and radios once I have the time and access, but that may be a while...
Still, I'll keep checking this thread to see if anyone posts any other options
Click to expand...
Click to collapse
Just go into settings and to Backup & Reset , this will return your phone to a fresh install and remove all non bundled apps.
Before doing the reset try going into Settings then Call then change Preferred Network to Global, or toggle from LTE then back to Global.
The basic problem is as follows:
I've got a Nexus 6p on which I dirty flashed an 8.1 update (27 Feb 2018) of ABC Rom over an earlier 8.1 version (01 Jan 2018) of ABC Rom. After that, the issues began. At boot, I'd be on 3g and if I toggled airplane mode off and then on, I could get LTE for about 10 seconds. However, it would then drop back to 3g. It's probably worth noting that my cellular provider is Verizon.
I tried everything that I could think of and/or learn via the google. Such as:
Wipe system, data, cache, and dalvic
Revert to stock
Install different/older radio images
Changed SIM (although still Verizon)
... nothing worked. I've read about people manually configuring their APNs. However, I've got a Verizon SIM, so that option does not exist... as far as I can tell.
I've identified a crappy work-around that allows me to get a stable LTE connection as follows:
Open the Phone's Testing Settings by dialing: *#*#4636#*#*
Tap "Phone Information"
Scroll down and set the "VoLTE Provisioned" toggle to the "on" position.
Then, toggle airplane mode on and off.
However, the reason I've described this as crappy is that doing this results in my phone being unable to make or receive calls. Whenever I try to make a call with VoLTE Provisioned, the call fails and reports "Server Error". Consequently, I generally just deal with the phone working in 3G. On the up side, this work-around does demonstrate that LTE is still possible... with the right configuration. Although, it would be nice if I could get both LTE and phone working vs just one or the other.
I came across this post suggesting that a possible solution is to boot the phone up with a non-Verizon SIM, power it off, and then boot it up again with the Verizon SIM. I'm not sure how this fixes the issue. However, before I go buy a $30 SIM in the hopes that it will fix my issue, I figured I'd make this post and see if anyone has any other ideas how I might correct this.
Any ideas are appreciated.
[email protected]
So after a few months of using 3g, I got my hands on brand new AT&T SIM card. (For what it's worth, it hadn't even been provisioned yet). I went ahead and boot the phone with this new sim card. (I also reset the new APN settings to the default, although it probably didn't do much). After powering the phone down and putting the Verizon Sim back in, I've got my LTE back and all is good.