[global]
model = AT
connection = serial
port = /dev/ttyACM0

KERNEL=="tty*", ENV{ID_MODEL}=="SAMSUNG_Android",  MODE="0666", GROUP="plugdev"

sudo groupadd plugdev

plugdev:x:1004:elias

ls -l /dev/ttyACM0
crw-rw---- 1 root uucp 166, 0 марта  2 00:57 /dev/ttyACM0

uucp:x:14:elias

sudo gnokii --identify
GNOKII Version 0.6.31
LOG: debug mask is 0x1
Config read from file /etc/gnokiirc.
phone instance config:
model = fake
port = none
connection = serial
initlength = default
serial_baudrate = 19200
serial_write_usleep = -1
handshake = software
require_dcd = 0
smsc_timeout = 10
rfcomm_channel = 0
sm_retry = 0
Initializing...
Connecting
Apparently you didn't configure gnokii. Please do it prior to using it.
You can get some clues from comments included in sample config file or give
a try with gnokii-configure utility included in gnokii distribution.
IMEI         : Unknown
Manufacturer : Unknown
Model        : Unknown
Product name : Unknown
Revision     : Unknown

sudo ls -l /dev/tty{ACM,USB}*
ls: невозможно получить доступ к /dev/ttyUSB*: Нет такого файла или каталога
crw-rw---- 1 root uucp 166, 0 марта  1 21:04 /dev/ttyACM0

udevadm info --query=all --name=/dev/ttyACM0
P: /devices/pci0000:00/0000:00:1d.7/usb1/1-3/1-3:1.1/tty/ttyACM0
N: ttyACM0
S: serial/by-id/usb-SAMSUNG_SAMSUNG_Android_45071c2413f7057-if01
S: serial/by-path/pci-0000:00:1d.7-usb-0:3:1.1
E: DEVLINKS=/dev/serial/by-id/usb-SAMSUNG_SAMSUNG_Android_45071c2413f7057-if01 /dev/serial/by-path/pci-0000:00:1d.7-usb-0:3:1.1
E: DEVNAME=/dev/ttyACM0
E: DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-3/1-3:1.1/tty/ttyACM0
E: ID_BUS=usb
E: ID_MODEL=SAMSUNG_Android
E: ID_MODEL_ENC=SAMSUNG_Android
E: ID_MODEL_ID=685e
E: ID_PATH=pci-0000:00:1d.7-usb-0:3:1.1
E: ID_PATH_TAG=pci-0000_00_1d_7-usb-0_3_1_1
E: ID_PRODUCT_FROM_DATABASE=GT-I9100 Phone [Galaxy S II] (USB Debugging mode)
E: ID_REVISION=0400
E: ID_SERIAL=SAMSUNG_SAMSUNG_Android_45071c2413f7057
E: ID_SERIAL_SHORT=45071c2413f7057
E: ID_TYPE=generic
E: ID_USB_CLASS_FROM_DATABASE=Miscellaneous Device
E: ID_USB_DRIVER=cdc_acm
E: ID_USB_INTERFACES=:080650:020201:0a0000:ff4201:
E: ID_USB_INTERFACE_NUM=01
E: ID_USB_PROTOCOL_FROM_DATABASE=Interface Association
E: ID_VENDOR=SAMSUNG
E: ID_VENDOR_ENC=SAMSUNG
E: ID_VENDOR_FROM_DATABASE=Samsung Electronics Co., Ltd
E: ID_VENDOR_ID=04e8
E: MAJOR=166
E: MINOR=0
E: SUBSYSTEM=tty
E: TAGS=:systemd:
E: USEC_INITIALIZED=11595411

sudo gnokii --identify
GNOKII Version 0.6.31
LOG: debug mask is 0x1
Config read from file /etc/gnokiirc.
phone instance config:
model = fake
port = none
connection = serial
initlength = default
serial_baudrate = 19200
serial_write_usleep = -1
handshake = software
require_dcd = 0
smsc_timeout = 10
rfcomm_channel = 0
sm_retry = 0
Initializing...
Connecting
Apparently you didn't configure gnokii. Please do it prior to using it.
You can get some clues from comments included in sample config file or give
a try with gnokii-configure utility included in gnokii distribution.
IMEI         : Unknown
Manufacturer : Unknown
Model        : Unknown
Product name : Unknown
Revision     : Unknown

udevadm info --query=all --name=libmtp-1-3
P: /devices/pci0000:00/0000:00:1d.7/usb1/1-3
N: bus/usb/001/027
S: libmtp-1-3
E: BUSNUM=001
E: DEVLINKS=/dev/libmtp-1-3
E: DEVNAME=/dev/bus/usb/001/027
E: DEVNUM=027
E: DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-3
E: DEVTYPE=usb_device
E: DRIVER=usb
E: ID_BUS=usb
E: ID_FOR_SEAT=usb-pci-0000_00_1d_7-usb-0_3
E: ID_MEDIA_PLAYER=1
E: ID_MODEL=SAMSUNG_Android
E: ID_MODEL_ENC=SAMSUNG_Android
E: ID_MODEL_ID=6860
E: ID_MTP_DEVICE=1
E: ID_PATH=pci-0000:00:1d.7-usb-0:3
E: ID_PATH_TAG=pci-0000_00_1d_7-usb-0_3
E: ID_PRODUCT_FROM_DATABASE=GT-I9100 Phone [Galaxy S II], GT-I9300 Phone [Galaxy S III], GT-P7500 [Galaxy Tab 10.1]
E: ID_REVISION=0400
E: ID_SERIAL=SAMSUNG_SAMSUNG_Android_45071c2413f7057
E: ID_SERIAL_SHORT=45071c2413f7057
E: ID_USB_INTERFACES=:060101:020201:0a0000:
E: ID_VENDOR=SAMSUNG
E: ID_VENDOR_ENC=SAMSUNG
E: ID_VENDOR_FROM_DATABASE=Samsung Electronics Co., Ltd
E: ID_VENDOR_ID=04e8
E: MAJOR=189
E: MINOR=26
E: PRODUCT=4e8/6860/400
E: SUBSYSTEM=usb
E: TAGS=:seat:uaccess:
E: TYPE=239/2/1
E: USEC_INITIALIZED=90703822

lrwxrwxrwx   1 root  root         15 марта  1 19:51 libmtp-1-3 -> bus/usb/001/02

lsusb
Bus 001 Device 021: ID 04e8:6860 Samsung Electronics Co., Ltd GT-I9100 Phone [Galaxy S II], GT-I9300 Phone [Galaxy S III], GT-P7500 [Galaxy Tab 10.1]

ls -l /dev/tty{ACM,USB}*
ls: невозможно получить доступ к /dev/ttyACM*: Нет такого файла или каталога
ls: невозможно получить доступ к /dev/ttyUSB*: Нет такого файла или каталога

crw-rw----   1 root  uucp   166,   0 марта  1 19:17 ttyACM0