2. Which character is considered as Unicode?

Using the characters from the following list of ASCII characters are treated as GSM (i.e. Normal):

• a-z
• A-Z
• 0-9
• ~!@#$%^&*()-_=+][?<>,’.”:/\{}

Any other characters is treated as a Unicode (e.g. £). Therefore, if your message contains even a single unicode character then the message is treated as a unicode message and charged accordingly.