Сonvert vCards into suitable for Nokia Series 30+ format

vCard_S30.py

r"""
vCard_S30.py -- Convert vCards into suitable for Nokia Series 30+ format, or
How to solve the only one phone number per contact problem.

1) Import contacts "contacts.vcf" from Google account (vCard format).
2) Place it beside this script.
3) Run the script with Python 2.7.
4) Copy the result "backup.dat" into "Backup" folder on the phone SD card.
5) Restore contacts from backup on the phone.

Tested on Nokia 220.

The MIT License (MIT)
Copyright (c) 2016 [email protected]
"""

import sys
import os

CARD = """
BEGIN:VCARD
VERSION:2.1
FN:%s
TEL;VOICE;CELL:%s
END:VCARD
"""

cp  = sys.stdout.encoding if sys.stdout.encoding else 'utf8'
sou = map( str.strip, open( './contacts.vcf' ).read().splitlines())
res = open( './backup.dat', 'w' )
err = 0
mark = None

for s in sou:
    if s == 'BEGIN:VCARD':
        print '{',
        fn = ''
        tel = []
        mark = 'FN:'

    elif s == 'END:VCARD':
        print '}'
        if not fn:
            print '#### ERROR: NO NAME ####'
            err += 1
        elif not tel:
            print '#### ERROR: NO PHONE ####'
            err += 1
        else:
            for i, t in enumerate( tel ):
                res.write( CARD % ( fn + ( ' %d' % i if i else '' ), t ))
        mark = None

    elif mark and s.startswith( mark ):
        if len( s ) > len( mark ):
            fn = s.split( ':', 1 )[ 1 ]
            print s.decode( 'utf8' ).encode( cp, 'replace' ),
        else:
            mark = 'ORG:'

    elif mark and s.startswith( 'TEL' ):
            tel.append( s.split( ':', 1 )[ 1 ])
            print s,

res.close()

print '#### DONE ####'
if err:
    print '%d ignored contact(s)' % err

How to restore them? My Nokia 216 just shows unknown file type.