When we go to the area where signal is not reachable, we experience "Emergency calls only" or "No service". But after coming-out from that area we sometime found phone is not receiving signal and still showing "Emergency calls only" or "No service" in-spite of no problem of signal in that area. And in that case I usually do "Flight/Airplane Mode" off-wait-on and phone starts receiving signals again.
So, in order to overcome situation (and also consider a case of network-jam), I think should have some solution like running script that auto refresh signal after every n minutes or an application that provides such function.
So, How can I refresh signal from command-line? (or interested in turning "Flight/Airplane Mode" on and off vial command-line) and how about making script that can do this job as per requirement (for example every 30 minute)?
Also suggest any application available and does such job at specified interval of time.
Note: I use rooted phones