restart layer1 from remote?

Hi, I have the problem, that after running for quite a while, lets say a week, the layer1 seems to crash. This crash is random and only happens on single phones (I have 6 phones connected to one mobile app). This phone is unusable, even after "shutdown/no shutdown" or complete restart of mobile, this phone stays like this: OsmocomBB# show ms 3 MS '3' is up, service is limited IMEI: XXXXXXXXXXXX IMEISV: XXXXXXXXXXXXX IMEI generation: fixed automatic network selection state: A1 trying RPLMN MCC=262 MNC=07 (Germany, O2) cell selection state: C1 normal cell selection radio ressource layer state: idle mobility management layer state: MM idle, PLMN search By restarting the phone (pressing power on the phone, and reloading layer1) its working again. But this need physical access to the phone. Is there a way to somehow "reboot" or restart the layer1 by software? And if not, could that easily be implemented? Thanks Tim