Text messaging isn’t just Messages on iPhone or text on Android. There is a whole cottage industry of text messaging apps. AppAdvice has a list:
Whether you want to send texts from a different number or another country, these apps will help you out. You can send text and MMS messages, or even make phone calls, using these free apps. These apps will get you started with texting, secure messaging, keeping up with your social network buddies, and dressing up your iMessage conversations with stickers.
- TextFree Ultra
I use Telegram and Messages.