Why won't they receive my emoji

Lauren

I have my emoji set up on my iPhone 4S. On my keyboard. My friends are getting blanks when I include them in my texts. But I can receive theirs.

Guest

Do they have iPhones as well? That could be the problem if they don't have iphones

Emily

Depends if they have an iphone. If not, they can't see it.

Will a person receive text messages on iPhone once they power phone back on? When I text a friend of mine, sometimes their texts show up green when I text him (we both have iPhones and messages are normally blue)… Once their phone gets powered back on will the text messages I send when the phone is off b received once the phone is turned back on?
Why is the emoji 2 app not working on my iphone 4? I have just downloaded emoji 2 on my iphone 4 but the new emoticons are not showing up in my keyboard. When i go to international-add keyboard.emoji isn't there as an option. I've tried deleting and readding the emoji keyboard I already had in settings, I've restarted my phone twice and I've tried both the japanese keyboards. Any suggestions?
Why don't I receive alerts or a notification when I receive a text and I already checked my settings? I adjusted my setting and even put the ringer and notifications on and put the volume and ringer on and I receive no alert, no pop up, alert or notification when someone texts me. Why? This is the iPhone X! I went to the cell phone/ carrier store and they didn't help me. They said to go to the apple store or check the settings. I already adjusted the settings. So what do I do now?
Why doesn't the iPhone have a black emoji? They got They got Tyler They got jose They got lupita They got Mary They got grandma ann They got got grandma joe They got britney b|tch Where's the blacks at on the emoji?