Yes .. perhaps see this Sonos support link for a list of iOS devices that can/cannot be used…

https://support.sonos.com/en-us/article/trueplay-compatible-devices-and-sonos-products

Also remember that any iOS betas are usually not supported eg iOS17 Developer betas at the moment

Also note that there has been a delay of Trueplay support for newly introduced iPad/iPhone models. Sonos will collect a pack of new model samples and determine an average microphone response before releasing Trueplay for the new model.

which is better for trueplay sonos ,iphone or ipad?

which is better for trueplay sonos ,iphone or ipad

Shouldn’t matter because Sonos calibrates every microphone for iOS devices. You could just try and trust your ears.

That being said, it might matter if you have dirt obstructing the mic on one device, and not the other.