I recently got an iPhone 5s. However, I can't receive or send text messages to my contacts who have iPhones and don't. I have tried multiple methods:
-Tried to reset the network settings
-Tried to reset phone
-Turned on 'turn on SMS' option
-Tried to turn off the wifi and turning back on
-Tried to turn on the mobile data to send imessages and turning it off to try to send texts to non-iPhone users
None of these methods work.