What was found
DOOR 2R NOT ARMED IN FLIGHT. CABIN PRESSURE LIGHT ILLUMINATED IN CLIMB. DOOR HANDLE WILL NOT STAY IN THE ARMED POSITION. DECIDED TO RETURN TO PHX . ALSO, ECAM MESSAGE BRAKES SYSTEM 1 FAULT, BSCU RESET PER QRH, MESSAGE REMAINED. DECLARED EMERGENCY AND LANDED OVERWEIGHT. PERFORMED ADJUSTMENT AND TEST OF THE RELEASE MECHANISM OF THE EMERGENCY SLIDE, NO DEFECT NOTED PER AMM 52-13-22-280-001. FOUND R2 DOOR PROXIMITY SWITCH OUT OF TOLERANCE. ADJUSTED THE PROXIMITY SWITCH PER AIRBUS MAINTENANCE MANUAL 52-71-00-820-0201. OPS CHECKED GOOD.