In order to hard reset a BenQ-Siemens CL71, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
BenQ-Siemens CL71 device will be brought back to the default configuration of a brand new device.
1. Is your phone on?
2. Okay then, type this code in: *#9999#
3. Your phone wil now restart, which means that the hard reset operation is complete.