Here are the instructions to make the M2 speed dial key functional:

1. Navigate to the settings of your phone and look for the speed dial menu.

2. Under the speed dial settings, you will find M3. Despite the system indicating 3 speed dial keys, this phone actually has only 2 physical speed dial keys, namely M1 and M2.

3. To use the M2 speed dial key, you can save the desired phone number under M3 in the settings. Despite the label M3, this number will be associated with the M2 speed dial key on your phone.

4. Once you have saved the phone number under M3, you can use the M2 speed dial key on your phone to directly access this number.

We understand that it can be confusing that the system indicates 3 speed dial keys while there are only 2 physical speed dial keys. We apologize for any confusion this may have caused.

If you have any further questions or if there is anything else we can assist you with, please do not hesitate to contact us. We are here to help with all your inquiries and needs.