^^^^ what's RSim 10? But fake theory? The cost of sim to a dealer/RMS is just 4 bucks. Usmein bhi fake? Or could it be some compatibility issue with the OS version.
The Verizon LG G2 I bought earlier, didn't work with original micro on 4.4, so we updated the OS version to 4.4.2 & went for a new sim (cut-micro) as suggested by seller. Didn't work. Changed many cut-micros in order to test various serial nos, didn't work..
Finally went back to original micro & it started working!
Incompatibility due to Carrier types, OS version, sim cut types & serial nos.. This CDMA world is a crazy place for noobs!