CDMA phones (notably, 3G Sprint US, 3G Bell Canada, 3G Telus Canada) couldn't simultaneously use data (say, Google Maps) and voice. GPS lat/long would work fin

CDMA phones (notably, 3G Sprint US, 3G Bell Canada, 3G Telus Canada) couldn't simultaneously use data (say, Google Maps) and voice. GPS lat/long would work fine, but you won't be able to download turn-by-turn directions or map tiles/vectors from Google. LTE (and 3G HSPA, such as AT&T, T-mo, 3G/4G/LTE Rogers Canada, LTE Bell Canada, LTE Telus Canada) don't have this behavior. Voice calls are packet switched (so you can do voice and data at the same time).