機き種しゅ変へん更こう

noun, noun or participle which takes 'suru', intransitive verb

model upgrade; device change

Commonly used for upgrading a mobile phone to a newer model while keeping the same carrier and phone number. Also used more broadly for changing to a different device model.

• 新あたらしいiPhoneに機き種しゅ変へん更こうした。

  I upgraded to a new iPhone.

• 機き種しゅ変へん更こうの手て続つづきはオンラインでできます。

  You can complete the model upgrade procedure online.