GameStop is picking up about 163 RadioShack Corp. locations, boosting its Spring Mobile collection of AT&T Inc. cellphone sales outlets by about 50%.

Spring Mobile, GameStop’s AT&T and Cricket sales chain, Friday won bankruptcy court approval to pay about $2.4 million for an option on the leases, part of a package of more than 1,600 RadioShack leases auctioned Wednesday.

Norman...