Hey guys new problem
After flashing the stock Kitkat ROM I realised that the OTA updater doesn't work, so I googled around some more and found the latest (I think) Lollipop ROM (A7-30HC_S127_151125_ROW) and flashed that with the SP flash tool. Everything works fine except for 1 major issue.
The SIM doesn't work and I can't make or receive calls and messages. The SIM is fine, I tested it on another device and I can make and receive calls without any issues. But on the tab it detects the SIM, data works, but calls and messages do not. On the status bar it shows 3G and the little reception bars. When I check the SIM status in settings it shows the network, but the Signal strength is 0, Service state is Out of service but the Cellular network state is Connected.
Is this a problem with the ROM? Do Lollipop ROMs for this tab have any issues like this? Should I downgrade back to Kitkat or try an older Lollipop ROM (like this one A7-30HC_S126_150824_ROW)
Help would be much appreciated
Edit: I just realised that it's saying Invalid IMEI on the lock screen, and when I type *#06# on the dialer it says Invalid
Have I lost the IMEI now?? Is this going to be a permanent problem?
Okay guys I fixed it with the help of a little googling again! XD
Followed the instructions given by the first result when I searched for invalid IMEI
Thankfully the tab had a sticker with the IMEI pasted on the back, so it was easy enough to type the commands with it.
Restarted and now everything is back to normal
Related
Hi,
I flashed CM 10.2 and I had a problem, the signal was coming and going so I returned back to stock.
Now I flashed unofficial CM 11 and I'm having the same problem, this is a video (notice the signal bar in the status bar).
http://videobam.com/LFZKy
And yes, I tried to flash another radio.
Thanks,
This is really strange, I fixed the problem and I don't know how, here's what I did after asking this question:
1-I left the phone on aeroplane mode for over 10 hours and the problem still exists.
2-I flashed an efs v1 modem and my signal fully disappeared and my IMEI changed to "Unknown".
3-I flashed the emergency zip and the signal fully disappeared and my IMEI is still "Unknown" :what:
4-I flashed an efs v2 modem and everything returned as it was before; IMEI was correct and the signal was coming and going.
5-I let the phone choose carrier automatically from the settings. Of course I did that when there was signal, Otherwise you can't open "Network operators".
6-I entered a new APN with info exactly as the currently chosen one and didn't select it.
7-I was on play store when I noticed the problem has been fixed
Note: My carrier when I had this problem and now is the same, "VIVA"
Going to eat some KitKat
Sent from my GT-I9300 using Tapatalk
I'm here because I have a really big problem with my phone, I can't send any message and I can't call because my phone can't registered on GSM or 3G network. I can receive signal from networks but I can't register on it, when I select a network it's showing a message saying : "Can't register on network now, try again later". The strange things is that it just append suddenly, all was perfectly working about 2 years now. It append when I switch preferred network from 3G to 2G. At this point everything was fine, but after that, I reboot the phone and then I was unable to registered on network.
I've try many things, I was on running on CyanogenMod 11 Nightlies so I flash CyanogenMod 10.1 stable but it didn't change anything. I've also tried different radio, I was using XXKDH for 2 years so I tried to switch to XXKG2 but it didn't worked.
I've also tried to put the original Samsung Firmware, it didn't worked.
The problem is really coming from the phone because I tried to use my SIM card on another phone and it worked.
I really lost now and I don't know what to do. Is my antenna broke suddenly?
Please help me.
EDIT:
I find that the IMEI showed by *#06# was different from the one behind my battery. So, like few peoples I have the 0049XXXXX IMEI, I'm actually trying to fix my IMEI with this : http://forum.xda-developers.com/galaxy-s2/general/imei-baseband-guide-t1596842 and this http://forum.xda-developers.com/galaxy-s2/general/guide-recover-imei-9-steps-t1264021 but for the moment nothing is working.
I can't find the .nv_data file so I guess I'm just ****'d but I will try something with .bak files and the efsbackup.tar.gz that was on my SD card for no reason. The most interesting thing I found on the efsbackup.tar.gz is this log file on attachment. Anyone now about what append?
I've also find that my imei folder was empty. Is this normal?
i have Itel it1355 android version 5.1 Lollipop my problem is that my phone reads my Sim card but it doesn't have any signal
and i can't make any calls or receive calls
i have tried searching for network both manual and auto ,changing network type,turning on and off the radio but no use ,i checked the imei if its the problem but the imei was correct
I will be really happy to get a solution
I have a Jiayu S2 double-SIM phone, running the most up to date official ROM (4.4.2).
This ROM had a couple of bugs (no GPS and no notifications to external devices such as smartwatches), so I wanted to check other available ROMs. Using the Flash Tool I have tried a couple of the ROMs in the needrom site (https://www.needrom.com/category/jiayu/s2-jiayu/). In particular, a couple of versions of the official ROM, another ROM known as Salamander, and an unofficial port of Cyanogenmod 12 (in which the camera was not working).
The issue is that, for some reason, at some point my phone has stopped getting phone signal. The SIMs ask for the PIN on startup, but there is no signal. I have reverted to the original ROM; plus done a factory reset, and I could still not get signal.
The APNs for both SIMs are fine. Then I have realised that the IMEI was empty. Luckily I had it written down, so I have installed Xposed and the Device IMEI Changer, with which I have been able to restore the IMEI. Now I can see the IMEI on the Settings - IMEI information, as well as with *#06#.
But still, now with the original ROM, and with the IMEI restored, I still cannot get phone signal. I have tried setting the phone to flight mode, restarting, selecting manually the network... When trying to manually select the network I can see several networks, but the phone will simply not connect to the one it should.
Any idea on why could it be that I cannot get phone signal? Thanks.
After trying everything, including restoring the IMEI with Xposed, I have finally managed to restore cell service by restoring the IMEI with this tool: https://play.google.com/store/apps/details?id=com.cryptotel.chamelephon
Hlw..!! i have a kitkat 4.4.2 device . Iv tried to install cm12.1 based lollipop 5.1 custom rom on it.Everything works just fine but after flashing it shows invalid imei and no network..so i flashed my imei nd after that i can see it by dialing *#06# but after all that a exclamatory symbol appears beside network icon and i cant use data by sim and network often comes nd goes . Though i can make / get calls nd sms but not service sms from sim operator .after activating WiFi the exclamatory sign get vanish. nd also during call on sim 1 sim 2 gets to 0 network....!!!
pls gys help me out here iv been trying to solve ths for almost a mnth........