GSM Alphabet

Not all keyboard based characters are supported by the mobile networks’ protocol for SMS, so here is a list of the GSM alphabet characters which are supported.

NB: GSM stands for Global System for Mobile Communications, and refers to the most frequently used alphabet used to write text messages.

As a general rule if you send an unsupported character, it will appear on a handset as the Latin character without the accent; so á will appear as a.

If you need to send as any other character then you can send your message as Unicode, but this will cost more characters.

Hex* Decimal* Character Name Supported Character
0x00 0 COMMERCIAL AT @
0x01 1 POUND SIGN £
0x02 2 DOLLAR SIGN $
0x03 3 YEN SIGN ¥
0x04 4 LATIN SMALL LETTER E WITH GRAVE è
0x05 5 LATIN SMALL LETTER E WITH ACUTE é
0x06 6 LATIN SMALL LETTER U WITH GRAVE ù
0x07 7 LATIN SMALL LETTER I WITH GRAVE ì
0x08 8 LATIN SMALL LETTER O WITH GRAVE ò
0x09 9 LATIN CAPITAL LETTER C WITH CEDILLA Ç
0x0A 10 LINE FEED
0x0B 11 LATIN CAPITAL LETTER O WITH STROKE Ø
0x0C 12 LATIN SMALL LETTER O WITH STROKE ø
0x0D 13 CARRIAGE RETURN
0x0E 14 LATIN CAPITAL LETTER A WITH RING ABOVE Å
0x0F 15 LATIN SMALL LETTER A WITH RING ABOVE å
0x10 16 GREEK CAPITAL LETTER DELTA Δ
0x11 17 LOW LINE _
0x12 18 GREEK CAPITAL LETTER PHI Φ
0x13 19 GREEK CAPITAL LETTER GAMMA Γ
0x14 20 GREEK CAPITAL LETTER LAMBDA Λ
0x15 21 GREEK CAPITAL LETTER OMEGA Ω
0x16 22 GREEK CAPITAL LETTER PI Π
0x17 23 GREEK CAPITAL LETTER PSI Ψ
0x18 24 GREEK CAPITAL LETTER SIGMA Σ
0x19 25 GREEK CAPITAL LETTER THETA Θ
0x1A 26 GREEK CAPITAL LETTER XI Ξ
0x1B 27 ESCAPE TO EXTENSION TABLE
0x1B0A 27 10 FORM FEED
0x1B14 27 20 CIRCUMFLEX ACCENT ^
0x1B28 27 40 LEFT CURLY BRACKET {
0x1B29 27 41 RIGHT CURLY BRACKET }
0x1B2F 27 47 REVERSE SOLIDUS (BACKSLASH) \
0x1B3C 27 60 LEFT SQUARE BRACKET [
0x1B3D 27 61 TILDE ~
0x1B3E 27 62 RIGHT SQUARE BRACKET ]
0x1B40 27 64 VERTICAL BAR |
0x1B65 27 101 EURO SIGN €
0x1C 28 LATIN CAPITAL LETTER AE Æ
0x1D 29 LATIN SMALL LETTER AE æ
0x1E 30 LATIN SMALL LETTER SHARP S (German) ß
0x1F 31 LATIN CAPITAL LETTER E WITH ACUTE É
0x20 32 SPACE
0x21 33 EXCLAMATION MARK !
0x22 34 QUOTATION MARK “
0x23 35 NUMBER SIGN #
0x24 36 CURRENCY SIGN ¤
0x25 37 PERCENT SIGN %
0x26 38 AMPERSAND &
0x27 39 APOSTROPHE ‘
0x28 40 LEFT PARENTHESIS (
0x29 41 RIGHT PARENTHESIS )
0x2A 42 ASTERISK *
0x2B 43 PLUS SIGN +
0x2C 44 COMMA ,
0x2D 45 HYPHEN-MINUS –
0x2E 46 FULL STOP .
0x2F 47 SOLIDUS (SLASH) /
0x30 48 DIGIT ZERO 0
0x31 49 DIGIT ONE 1
0x32 50 DIGIT TWO 2
0x33 51 DIGIT THREE 3
0x34 52 DIGIT FOUR 4
0x35 53 DIGIT FIVE 5
0x36 54 DIGIT SIX 6
0x37 55 DIGIT SEVEN 7
0x38 56 DIGIT EIGHT 8
0x39 57 DIGIT NINE 9
0x3A 58 COLON :
0x3B 59 SEMICOLON ;
0x3C 60 LESS-THAN SIGN <
0x3D 61 EQUALS SIGN =
0x3E 62 GREATER-THAN SIGN >
0x3F 63 QUESTION MARK ?
0x40 64 INVERTED EXCLAMATION MARK ¡
0x41 65 LATIN CAPITAL LETTER A A
0x42 66 LATIN CAPITAL LETTER B B
0x43 67 LATIN CAPITAL LETTER C C
0x44 68 LATIN CAPITAL LETTER D D
0x45 69 LATIN CAPITAL LETTER E E
0x46 70 LATIN CAPITAL LETTER F F
0x47 71 LATIN CAPITAL LETTER G G
0x48 72 LATIN CAPITAL LETTER H H
0x49 73 LATIN CAPITAL LETTER I I
0x4A 74 LATIN CAPITAL LETTER J J
0x4B 75 LATIN CAPITAL LETTER K K
0x4C 76 LATIN CAPITAL LETTER L L
0x4D 77 LATIN CAPITAL LETTER M M
0x4E 78 LATIN CAPITAL LETTER N N
0x4F 79 LATIN CAPITAL LETTER O O
0x50 80 LATIN CAPITAL LETTER P P
0x51 81 LATIN CAPITAL LETTER Q Q
0x52 82 LATIN CAPITAL LETTER R R
0x53 83 LATIN CAPITAL LETTER S S
0x54 84 LATIN CAPITAL LETTER T T
0x55 85 LATIN CAPITAL LETTER U U
0x56 86 LATIN CAPITAL LETTER V V
0x57 87 LATIN CAPITAL LETTER W W
0x58 88 LATIN CAPITAL LETTER X X
0x59 89 LATIN CAPITAL LETTER Y Y
0x5A 90 LATIN CAPITAL LETTER Z Z
0x5B 91 LATIN CAPITAL LETTER A WITH DIAERESIS Ä
0x5C 92 LATIN CAPITAL LETTER O WITH DIAERESIS Ö
0x5D 93 LATIN CAPITAL LETTER N WITH TILDE Ñ
0x5E 94 LATIN CAPITAL LETTER U WITH DIAERESIS Ü
0x5F 95 SECTION SIGN §
0x60 96 INVERTED QUESTION MARK ¿
0x61 97 LATIN SMALL LETTER A a
0x62 98 LATIN SMALL LETTER B b
0x63 99 LATIN SMALL LETTER C c
0x64 100 LATIN SMALL LETTER D d
0x65 101 LATIN SMALL LETTER E e
0x66 102 LATIN SMALL LETTER F f
0x67 103 LATIN SMALL LETTER G g
0x68 104 LATIN SMALL LETTER H h
0x69 105 LATIN SMALL LETTER I i
0x6A 106 LATIN SMALL LETTER J j
0x6B 107 LATIN SMALL LETTER K k
0x6C 108 LATIN SMALL LETTER L l
0x6D 109 LATIN SMALL LETTER M m
0x6E 110 LATIN SMALL LETTER N n
0x6F 111 LATIN SMALL LETTER O o
0x70 112 LATIN SMALL LETTER P p
0x71 113 LATIN SMALL LETTER Q q
0x72 114 LATIN SMALL LETTER R r
0x73 115 LATIN SMALL LETTER S s
0x74 116 LATIN SMALL LETTER T t
0x75 117 LATIN SMALL LETTER U u
0x76 118 LATIN SMALL LETTER V v
0x77 119 LATIN SMALL LETTER W w
0x78 120 LATIN SMALL LETTER X x
0x79 121 LATIN SMALL LETTER Y y
0x7A 122 LATIN SMALL LETTER Z z
0x7B 123 LATIN SMALL LETTER A WITH DIAERESIS ä
0x7C 124 LATIN SMALL LETTER O WITH DIAERESIS ö
0x7D 125 LATIN SMALL LETTER N WITH TILDE ñ
0x7E 126 LATIN SMALL LETTER U WITH DIAERESIS ü
0x7F 127 LATIN SMALL LETTER A WITH GRAVE à

*Please don’t worry these columns unless you are a developer; when using Echo, you just need to use the content from the supported character column.

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