sms character limit

pu1. I don't know if there's a difference between carriers, but SKT has 500 cases
If there are more than 500 cases, texting will be blocked for 3 days

2017-11-18

OK

pu2. I think it's a limit of 500 cases, given that there are text messages saying that if you send about 400 cases, you can be blocked if you send more than 500 cases

2017-11-18

OK

pu3. It's 500 cases, but sending 500 doesn't necessarily mean it's blocked, and if it's blocked, you have to prove it's not spam, but that's tricky

2017-11-18

OK