How prevent Chaning long sms to mms

[HalehTm]

Help plz

When I type more than 160 characters on my sms my message change to mms automatically 

I changed input text message setting between GSM unicode and automatic but It doesn't work 

[zahrainlondon]

There should be a control in the settings somewhere where you can block long sms turning to mms. Search there.

[zahrainlondon]

Or contact your network provider to switch it off