hello guys
so i recently bough the micromax canvas a1 version aq4502 i flashed cm 12.1 rom that i downloaded for my aq4501 in it the rom seems to worked fine but i reverted back to the stock firmware after flashing the stock firmware i noticed the network connection error sim seems to be connected but it just doesnt work and its really annoying so i did some research to get rid of it tried some imei changing softwares but most of them give error like metadata fail but one really worked for me i sucessfuly get my imei number back but im still getting the no network connection problem whenever i dial any number i tried everything but nothing seems to help me
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I flashed a custom yesterday and phone started up good and everything worked except I cant connect to my network provider. I tried resetting the network settings and everything, I restored back to my stock rom and still cant connect to my network, IMIE number is there and everything. Dont know if I screwed the SIM card up when i flashed the rom or not but its getting frustrating....anyone with help would be awesome...thanks
Did you try to start "from scratch" with ODIN ? This is the only to make sure the issue is hardware/firmware related.
If yes, then maybe you are a victim of the bug described here: http://forum.xda-developers.com/showthread.php?t=1852255
Also any info on the ROMs before/after would help.
Anyone have the issue where the SIM card isn't recognized? I'm on the RR newest ROM and the card isn't being recognized...I'm about to try the stock ROM and see how that goes.
Similar problem
I`m in a similar position I think. However, my phone recognizes the SIM but when checking the SIM-status the mobile radio seems to be off. I can´t change preferred network type, it just jumps back to "TD-SCDMA/GSM/WCDMA/LTE , I get no results when searching for mobile networks and when I use the *#*#4636#*#* - menu the "Turn on radio"-option wont respond. I`m on latest stock firmware and the phone is still displaying IMEI-numbers. I bought my unlocked European version of Oneplus X yesterday on an auction site, the seller has good reputation and he claims that it worked fine for him. I got a new SIM-card today thinking that would have solved the problem, no luck there however. I also did a hard reset and downgraded to an earlier version of a stock firmware and the error is still there. I noticed I had TWRP v.2.8.7.0 blu_spark r5 preinstalled when I bought it, its a custom kernel right? Could something related to the kernel be the root of the problem or the baseband? Any suggestions on what to do next?
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
I have sm-g360h duos. I had rooted my phone through kingoroot and later decided to unroot and even unrooted but my device recognized root during software update so I flashed firmware (downloaded from sammobile.com) through odin but after flashing a firmware, 3G is not working in my device.Later I found that firmare was corrupted during unpacking process. & I also flashed another firmware but problem remained same. I often and often checked a network and setting.There is no network and setting fault.While I change my network mode to cdma only, No service sign appears in signal bar. Call sms,2G everything running well and imei also okay but 3G is not woking. Please help me
Flash TWRP and Use a Custom ROM.The fault Is In The /system/bin I had that.
Sent from my Nexus 6P using Tapatalk
Android 3G "No Service" issue.
Can u give me tutorial about that??? I had often and often flashed firmware and recovery firmware too. But not solved.
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