Hi Homam,

> ofonod[17818]: drivers/atmodem/gprs-context.c:at_cgdata_cb() ok 0
> ofonod[17818]: Unable to enter data state
> ofonod[17818]: src/gprs.c:pri_activate_callback() 0x2121c00
> ofonod[17818]: src/gprs.c:pri_activate_callback() Activating context failed with error: Incorrect parameters
>

Can you enable AT command tracing by using:

export OFONO_AT_DEBUG=1 the running ofonod and post that log.

It looks like the either the APN setup is incorrect or the modem will 
require us to use the legacy form of context activation instead of +CGDATA.

Regards,
-Denis