Originally Posted by Seril89
I updated firmware to JB by Ginger with odin but i had this problem also with 2.3.6 original. I updated the firmware for to try to fix the problem, but without result.
Look the attachments
Try a reflash with Odin a dedicated firmware for your area.
Reboot into stock recovery (remove the battery, put it back, press simultaneously vol.up, home and power buttons). You have to give a factory reset and restart. Helped me regain my baseband and network access. I mention that my phone locked to the network (Vodafone) but I installed the firmware for another network, but also for my area.
If don't work, service for Samsung is single solution...
Tab: Lenovo Idea 2107A-H with 4.03 ROM