Unicode / GSM SMS Checker

Instantly verify SMS encoding compatibility. Identify non-GSM characters and convert to GSM-7 for cost savings.

Unicode / GSM SMS Checker

Instantly check if your message uses GSM-7 or Unicode encoding

Optimization Tips

  • Replace smart quotes with standard quotes to save space
  • Use hyphens (-) instead of em dashes (—) for GSM compatibility
  • Convert ellipsis (…) to three dots (...)
  • Remove emojis or replace with text equivalents

Why Unicode?

Unicode encoding is triggered when your text contains characters outside the GSM 7-bit character set, such as:

  • • Emojis (😊, 👍, ❤️)
  • • Non-Latin alphabets (Cyrillic, Arabic, Chinese, etc.)
  • • Smart quotes (" " ' ')
  • • Em/en dashes (— –)
  • • Special symbols (™ © ® ° × ÷)