1st sms on russian was "Тест" - empty received
turn GSM alphabet ON
2d sms "Тест 2" - only digit 2 was received
turn GSM alphabet OFF
3d sms "Тест 3" - was received as "Тест 3"
without reboot
turn GSM alphabet ON
2d sms "Тест 2" - only digit 2 was received
turn GSM alphabet OFF
3d sms "Тест 3" - was received as "Тест 3"
without reboot