[Garsnow]

I just unlocked a 3g, and a 2g for some buddies with redsn0w and 3.0 and they both complained of their phones losing service and then the service will come back with full bars.

Any ideas?

[ArkAngel06]

Mine does this too, usually accompanied by a quick "No Sim Card installed" pop up.

As far as I can tell, it is just a by product of UltraSn0w, and cannot be helped. They may fix it in an update down the road.

I read getting a newer SIM card can help, however I got one yesterday and am still seeing it for a second after rebooting my phone.