iPhone 6S. Works fine. It’s been wiped out and reset Used for the last year or so for our son as a Wi-Fi connected device. He’s now getting a new phone so we’re selling this. Great for a young kid that doesn’t need an actual cell phone but can text and call through Wi-Fi calling or use apps, etc. just like an iPod if you remember those. This could likely be set to cellular as well, but we never had cellular on it as we bought it second hand for the purpose we used it for.