[Q] CM10 on RAZR MAXX. no signal.

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http://forum.xda-developers.com – i have CM10 running on my RAZR MAXX. and everything works great except for i keep losing signal. i have 1 bar. no 3G or 4G. i did something where i put in "*#*#4636#*#*" in the Dialer then i changed it to "GSM only". waited a few seconds. then switched it to "LTE/GSM/CDMA auto" and it worked once. until i restarted my phone. now i cant get it to work again. i also read something about taking out SIM card then restarting phone and putting it back in and restarting phone. but that didnt work either. any help? (HowTos)