A3635

iPhone 17e (iPhone18,5) - Front view

iPhone 17e

iPhone18,5

A3575
A3634
A3635
View Firmware Signing Status Downgrade Status
Quick Info
Earliest Firmware
iOS 26.3.1
March 4, 2026
Latest Firmware
iOS 27.0.1
September 28, 2026
Total Firmware
12 releases
Support Span
6 months
About model A3635

The model number A3635 belongs to the iPhone 17e (device identifier iPhone18,5). Apple assigns multiple model numbers to each device for regional and connectivity variants, so one device usually carries several of them.

How do I find the model number on my device?

Open Settings > General > About and read the Model Number field. The number is also printed in the fine print on the back of the device and, on some models, on the SIM tray. Our model identification guide walks through every method.

What is the difference between A3575, A3634 and A3635?

Nothing software-related. These model numbers all refer to the same iPhone 17e; Apple uses them for regional and connectivity variants, and firmware support is identical across all of them.

A3575
A3634