Messages on iPhone
My friends messages or calls won’t go through to her friend we aren’t sure if it’s bc her friend has and android or it’s just no work
You post no information about your friend's device. Since this involves sending messages to an Android device, that troubleshooting would have to be done by the cellular carrier. They provide support for SMS. Also, since you mention calls not going through, that should be addressed to the carrier, since their network is what handles calls.