Android Secret Codes.... Cell Battery, WiFi Usage etc Info *#*#4636#*#* Restore Factory Settings *#*#7780#*#* Format Phone *2767*3855# Launch service mode *#*#197328640#*#* Test WiFi *#*#232339#*#* or *#*#526#*#* or *#*#528#*#* Display WiFi MAC address *#*#232338#*#* GPS test *#*#1472365...