Apple C1X

<style>
.ios-ib th.ios-lab { background-color: #333; color: #fff; text-align: center; width: 28%; padding: 6px; }
.ios-ib td.ios-val { text-align: left; padding: 6px 10px; }
</style>
{| class="ios-ib" style="width: 100%; border: 2px solid #333; text-align: center;" darkstyle="border-color: #48484a;"
|-
| colspan="2" style="padding: 28px 20px 42px;" |
<div style="font: bold 2em/1.2 -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Helvetica Neue', Helvetica, Arial, sans-serif; color: var(--wiki-color);">Apple C1X</div>
|-
! class="ios-lab" | Designer
| class="ios-val" | [[Apple]]
|-
! class="ios-lab" | Introduced
| class="ios-val" | September 2025 ([[iPhone Air]])
|-
! class="ios-lab" | Role
| class="ios-val" | Cellular modem — ~2× faster than [[Apple C1|C1]]
|-
! class="ios-lab" | Devices
| class="ios-val" | [[iPhone Air]] · [[iPhone 17e]]
|-
! class="ios-lab" | Predecessor
| class="ios-val" | [[Apple C1]]
|}

{{Apple silicon Navbox}}

The Apple C1X doubled the [[Apple C1|C1]]'s speed and, by Apple's telling, used thirty percent less energy than the Qualcomm modem in the [[iPhone 16 Pro]] — efficiency that made the impossibly thin [[iPhone Air]] possible. Paired there with the [[Apple N1|N1]] networking chip, it made the Air the first iPhone whose every radio is Apple's own.

= Legacy =

Still current: promoted into the [[iPhone 17e]] in 2026, the C1X continues the modem line's staged march up the lineup while the flagship [[iPhone 17]] models still buy Qualcomm — the dependency's last stand.