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Tech Info - Bosch 509

Bosch 509DB

IMEI *#06#

Enhanced Full Rate Codec (EFR) activation *3370#
Enhanced Full Rate Codec (EFR) deactivation #3370#
Show Enhanced Full Rate Codec (EFR) status *#3370#

Half Rate Codec (HR) activation *4720#
Half Rate Codec (HR) deactivation #4720#
Show Half Rate Codec (HR) status *#4720#