Data Wont Get Connected to Roaming Operator after Update to CM 12.1

Hello,
I know i may be posting about Custom ROM in wrong section, but being a new member am not allowed to make post in Development thread.
Regarding issue, I installed Cyanogenmod 12.1 Build 17 ROM Yesterday. All went well. But am facing an issue with Data Connection

Am Using Reliance SIM Card and since am mostly on roaming and Reliance does not have 3g services in my roam location, i select Tata Docomo netwok for using 3G Data services. However after installing the New ROM, though am able to select Tata Docomo Network and make calls with same, Data does not work with it. To be clear i have Data Roaming On and am able to use 2G Data on Reliance Network.
I tried manually changing APN but it did not work either. Is it the bug with the ROM or am i missing something? May sound silly but is there any way to force start Data?

Note: Tata Docomo does have 3G issues. If 3G gets disconnected, you have to refresh network selecting either Docomo 2g or Reliance 2g network and then again selecting Docomo 3G. This method works with 100% hit Ration on stock ROM and even other devices like Micromax. Tried the same, but never worked on CM12.1

No Network Operator List and No Connection

Phone specs out of the way first: GT-i9300, Android 4.3 (via OTA), sim unlocked, not rooted, Baseband i9300UBUGNF1, Kernel 3.0.31-2320216, and the IMEI matches the frame.

So I've got a problem that's very similar to a lot of other people with one or two exceptions. I get the "Mobile Network Not Available" error message and I've tried the suggested fixes except for the Ariza patch and I haven't tried changing my modem. I don't want to jump into either of them yet because I'm not sure my problem is the same as all the others. Here's why:

When I go to set the network manually via Settings > More Networks > Mobile Networks > Network Operators > Wait till your device is searching for operators. Once the search is done it will show a list of Network Operators ... Nope, not mine. Mine shows nothing and goes right back to the menu showing Search Networks and Select Automatically. Tapping Search Networks brings the same result. If I set the Network Mode on the previous menu to GSM only, it takes less time to search, but still returns nothing.

Also, I don't have any bars. Not as in having bad signal, but as in there is no signal strength indicator in the status bar. Instead, I have a circle with a line through it next to the battery level indicator. I can not even make emergency calls with the phone.

I haven't found anyone with this particular problem yet, even though I've been searching all day. Perhaps I'm not searching for the right thing?

I've tried an old ATT sim and an active GivMobile sim, both with the same results. Both sims will register networks on other phones. I started out on 4.1.2 and did the OTA updates to get to 4.3 with no change in symptoms. I did a factory reset before doing the updates. I've never had a custom ROM on the phone. The IMEI doesn't show up as blacklisted on any site I used to check it. I even went as far as replacing the SIM card reader.

Could my antenna be bad? Could I have the wrong modem for the networks I'm trying to get onto? Any opinions or direction would be greatly appreciated.

How to remove the operator logo? (boot, restart & power off)

Does anyone know how to remove the operator logo at boot, restart & power off? The phone is a I8190N, ROM from O2.

http://8020ltd.com/wp-content/upload...go-574x350.jpg

Incorrect operator name

Hi,

I am currently on Cloudy g3 2.5 ROM and when in roaming i am getting incorrect operator name.

I am connected to IND airtel network (numeric ID 40470) but my device is showing this as AIRCEL. I checked by putting this SIM in different device and that is showing correct operator name.

So it seems issue with my device, anybody know how to get or reset to correct operator name.

Thanks

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