AO Platinum Member
Join Date: Sep 2005
Location: Right Side O The Pennines
County: West Yorkshire
SIM card doesn't have anything to do with Reception, this is regulated by a myriad of factors, climate, topography, cell site coverage, interference, battery power (some devices auto regulate TX/RX power based on battery life) plus a host of other factors, this is why mobile phone companies don't guarantee reception.
SIMs can be damaged and cause connectivity issues but not reception strength.
Some very old SIMs are incompatible with modern networks and will only offer GSM coverage.