I have been using online free sms websites and i wonder why they allow text messages characters to be 160...
Why Text messages are limited to 160 characters?
Is there any specific reason? If so what is it?
Questions on Super User are expected to relate to computer software or computer hardware within the scope defined by the community. Consider editing the question or leaving comments for improvement if you believe the question can be reworded to fit within the scope. Read more about reopening questions here.If this question can be reworded to fit the rules in the help center, please edit the question.
It's because they utilize a part of the GSM protocol that limits them to something close to 160 characters. They flow over the voice network rather than the data network. Check out the Wikipedia article for more detailed info.