Flash Plus 2 can't recover a signal when signal is lost from either sim 1 or sim 2, you have to turn off and then turn on airplane mode to recover the signal.. Hope this gets fixed on the upcoming update..
The phone must be turn off before turn on airplane mode?
After the system update,Still My network signal in FP2 are flactuating, compared to my other phone, the signal reception indoor is very good.
Same here, once the signal lost, the signal never return not unless if you go to airplane mode and the off the airplane mode.
i fix it by choosing preferred network type to ( UMTS/GSM auto)