Why do my texts to one person fail to send?

Whenever I try to text a certain person my texts don't send. Its so weird. I thought it was because they had a bad phone but now they have an iphone and even imessages don't send. He can text me and I get them but when I text him they don't deliver

Added (1). I don't think they blocked me considering they still text me and expect a response

Added (2). I don't think they blocked me considering they still text me and expect a response

Added (3). I tried imessaging him from my ipod and that didn't deliver either. Is this a problem with my phone or his

The only time that's happened with me is when they blocked my number. (my ex, that is)

Have you tried powering your device off and back on? Are you using a non-native application for SMS/MMS? Returning your handset to as close to factory settings as possible will tell you a lot. If you've power-cycled the phone, reset it and you're still running into the issue it might be time to call your carrier to have them open a trouble ticket. It's advised that your recipient also turn their phone on and off as well.

That means they're not on their phone that happened to me once too, then i figured out that they're just not on… Maybe next time tell ask him when hes available. Hope this helps!

I turned my Andriod off then back on and I'm back to normal. I got this suggestion from a message above by: Xander 11/15/2020

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