Ran into problem about 3 weeks ago with phone suddenly not recognizing SIM card. Got a replacement SIM Card from Verizon, which worked about 3 days, then same error occurred. Got yet another SIM card and problem seemed to resolve itself. However, over weekend SIM error happened again, but went away after reinserting. This morning now getting message that microSD card not mounted, although was recognizing initially at boot. This is happening sporadically. Anyone else run into this issue? Have contacted LG as still under warranty until the 24th of this month.