i have 1.1.2/46 week 43 UK iphone. couple of days back i used full step i.unlock.no tutorial (1.1.2 -> 1.1.1 -> 1.1.2 -> 1.1.3) to unlock it and all seemed great.

however since then i've noticed intermittently iphone shows no network coverage (all antennae bars are empty) and even no service. at these times callers can't get through to me. they describe that they hear silence longer than usual and then voice mail greeting.

there is a network coverage where i am and my wife's nokia N95 8GB shows full antennae.

PS: today iphone crashed after i slided it to unlock. seconds before it crashed i've noticed 'No service' logo instead of mobile operator.

anyone has experienced anything like that recently?