Hi all. This thread is for all of you that have problems with the GSM signal. Here are some modems i found ! Hope this will help you!
Check the one made by Xakep! One of the best developers for this phone!
Here is the link to my Google Drive: https://drive.google.com/folderview?...DQ&usp=sharing
Here is a little tutorial:
1. Download your zip file;
2. Copy zip file on the root of your SD Card;
3. Reboot your phone on custom recovey TWRP or CWM
4. Go to install and browse for SD Card. There you will find your modem software in zip file.
5. Install the modem
6. Reboot your phone and wait for the GSM signal to appear;
7. If your signal is no good repeat steps 1 to 6 with another one.
Allways make backup !