BMW Bluetooth Upgrade Module Owner's Manual page 17

Placing, receiving and ending a call.
Via Vehicle Interfaces
Usage of the dialing features via the steering wheel,
audio system voice recognition and displays is described
in the Communications section of the vehicle handbook.
The BTUM phonebook.
The BTUM is capable of storing 500 phonebook entries. If
more than 500 entries are present, only the first 500 will be
stored. Duplicate or empty entries will be ignored. If your
handset uses a SIM card and is capable of storing a SIM
phonebook, these entries will also be transferred to the
BTUM. Phonebook entries from your handset are stored
first, then entries from the SIM card until the 500 entries
are filled.
EXAMPLE: Phone with 400 entries on phone and 200
on SIM – 400 entries from phone and 100
from SIM would download.
Names of up to 12 characters and phone numbers up to 18
digits are accepted. Support of special characters - such
as accents and pauses - depends on phone model.
Use of non-approved phones may not allow full
phone functionality and/or phonebook download.
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