Most if not all, PM plans include international texting, as long as you are texting from your home region. If outside your home region, you need to purchase the international texting add-on, or use your phone to connect to the internet (or use data) ...
You might also check your APN settings, which should be as follows:Name: Mobile InternetAPN: sp.mb.comProxy: Not setPort: Not setUsername: Not setPassword: Not setServer: Not setMMSC: http://aliasredirect.net/proxy/mb/mmscMMS proxy: 74.49.0.18MMS po...